1978 Chevrolet Corvette

1978 Chevrolet Corvette
 GENUINE CHEVROLET
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GENERAL INFORMATION _OA-1
SECTION OA
GENERAL INFORMATION
CONTENTS
General
srosacaccsee —. „еее DA-]
veers aneonenanantonnenmencos 0A-1
Body Identification Plate.....
Vehicle Identification Number
Unit Identification
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0A-2
GENERAL
Information to identify the vehicle and vehicle
components appears in this section. Detailed specifications
on major units are given at the end of each respective section
in this manual.
BODY IDENTIFICATION PLATE
The body identification plate (fig. OA-1), is located on
upper horizontal surface of shroud.
The body identification plate identifies:
e model year
e car division
e body type
e series
e body style
© assembly plant
e body number
e trim combination
e modular seat code
e paint code
e date build code
SERIES
STE
ASSEMBLY PLANT | UNIT NUMBER
[ — == : —
008 YEAR — | 8QDY. BY |
пк 01010 _ XX XXX Y : 000000
TSE | isle 16IT :SiéA L |
DIVISION
TIME BUILD CODE
Rim
COME INAT ION
SEAT OPTION
1PLANT USE
UPPER BODY COLOR OF FABRIC TOP
Fig. OA-1-Body Identification Plate
VEHICLE IDENTIFICATIGN NUMBER (VIN)
This 1s the legal identification of the vehicle. It appears
on a plate which is attached to the windshield pillar, and
can be easily seen through the windshield from outside the
car (fig. OA-2). The VIN also appears on the Vehicle
Certificates of Title and Registration.
Division Code
The first number of the VIN is the code for the Division
designing and producing the car.
Series Code
The second number in the VIN is the one letter code
identifying the series as shown in Fig. OA-3.
Body Style Code
The third and fourth numbers of the VIN identify the
body style of the car. See Fig. DA-3.
Engine Code
The fifth number of the VIN is a one-letter code
identifying the engine used on the car. See Fig. OA-3 for
engine identification.
ef A 00001 J ©
TYPICAL VIN
| ENGINE so
Fig. OÀ-2-Vehicle Identification Number Location
OA-2 GENERAL INFORMATION
SAMPLE NO.
VEHICLE IDENTIFICATION NUMBER
A 7 87
Division Identification Vehicle Series ‚ Моде! Engine Year Assembly
Always 1 for Chevrolet Corvette 2 Dr. Sports 5.7L (350 cid) 1978 Plant
- Coupe V-8 4B St. Louis
Engine Code |
8 or 4
1287895100001
8 8 S
Fig. OA-3-Vehicle Identification Number x 2°
Model Year Code 77 :
The number 8” in the sixth position of the VIN
represents the model year, 1978. о
Assembly Plant Code :
The GM assembly plant at which the car was
assembled is identified by the one-letter (or number) code
in the seventh position in the VIN shown in Fig. OA-3.
Plant Sequential Number SE
The last six numbers of the vehicle identification
number (VIN) serves as a serial number to identify a specific
1979 model from other similar models assembled at the
CENVETTY S308 MANURL
same plant during the model production.
UNIT IDENTIFICATION NUMBERS a .
‘For the convenience of service personnel when writing
up certain business papers such as Warranty Claims or
Product Information the following chart and
Figures OA-4 through OA-6 indicate location ‘of various
components unit identification numbers. -
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GENERAL INFORMATION _O0A-3
VEHICLE COMPONENT IDENTIFICATION NUMBER LOCATION
i
Component Type Location
Transmission 4-Speed (83 mm) Drivers side adjacent to rear of cover
4 Speed (76 mm) ‘Drivers side, below side cover
Automatic 350 > i Right vertical surface of oil pan
Automatic 200 Tag on passenger side of transmission extension
Rear Axie Number | Corvette On bottom surface of carrier at cover mounting flange
Generator Al On top drive end frame
Starter All Stamped on outer case, toward rear
Battery All On cell cover segment, top of battery
ENGINE V.LN. ENGINE
(OPTIONAL) > CASE PAD
Fig. OA-4-Engine V.I.N. Location
CORVETTE EMO ча
0A-4 GENERAL INFORMATION
Y.I.N. LOCATION
V.LN. LOCATION
(OPTIONAL)
AUTOMATIC
Fig. OA-5-Transmission V.i.N. Location
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MAINTENANCE AND LUBRICATION 08-1
The maintenance schedule follow two basic formats,
Schedule I and II. The major difference between the two
schedules is Section *C* or Emission Control Maintenance
(fig. 0B-1). Schedule I or Schedule II is tied to the engine
family number as shown on the emission control label under
SECTION OB
MAINTENANCE AND LUBRICATION |
a CONTENTS
General .. . OB-1
Maintenance Schedule 0B-2
.Lubricant and General Maintenance ... . „еее. ОВ-3 >
— - - Safety Maintenance..... =: OB-8
Emission Control … 0B-9 ;
Specifications ........... . 0B-10 _
— Recommended Fluids and Lubricants ..... ernaneoocenos ... OB-10
Fluid Capacities.......——ee...omenncicoononrcenn one nen near OB-11
. Vehicle Lifting Points . 08.12
GENERAL
the hood area. Vehicles shown the Schedule I or Schedule
II designation on the label.
The maintenance schedule is provided in the glove box
with the car.
4 . —
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-
—-— -
0B-2 MAINTENANCE AND LUBRICATION
MAINTENANCE SCHEDULE
When To Perform Services Hem . Services’
(Months or Miles, Whichever Occurs First) No. Details, See Numbered Paragraphs)
SECTION A ~~ Lubrication and General Maintenance
Every 12 Months or 7,500 Miles (12 000 km)
See Explanation
or (24 000 km)
Every 30,000 Miles (48 000 km)
SECTION B — Safety Maintenance
Every 12 Months or 7,500 Miles (12 000 km)
Every 12 Months or 15,000 Miles (24 000 km)
SECTION C — Emission Control Maintenance Schedule |
& Hoses Check
At first 6 Months or 7,500 Miles-(12 000 km) Then at 15-Montiv
22,500-Mile (36 000 km) so
Every 12 Months or 15,000 Miles (24 000 km)
Every 22,500 Miles (36 000 km)
Every 24 Months or 30,000 Miles (48 000 km)
SECTION C — Emission Control Maintenance Schedule 1!
Thermo. Controlled Air Cleaner Check
At first 6 Months or 7,500 Miles (12 000 km) — Then 24-Montiv Moses
30,000-Mile (48 000 km) , Except C-2,
Which Requires Service at 45,000 Miles (72 000 km) 50
Every 12 Months or 15,000 Miles (24 000 km)
Every 30,000 Miles (48 000 km)
Every 24 Months or 30,000 Miles (48 000 km)
a * Also an Emission Control Service
Fig. 0B-1-Vehicle Maintenance Schedule
ETA a A
MAINTENANCE AND LUBRICATION 08-3
MAINTENANCE SCHEDULE
This is an explanation of the service listed in the
Vehicle Maintenance Schedule.
NORMAL VEHICLE USE-The maintenance
instructions contained in the maintenance schedule are
based on the assumption that the car will be used as
designed:
e To carry passengers and cargo within the limitations
indicated on the Tire Placard located on the edge of the
driver's door,
e on reasonable road surfaces within legal operating
limits,
e on a daily basis, as a general rule, for at least several
miles/ kilometres, and
e on unleaded gasoline.
Unusual operating conditions will require more
frequent vehicle maintenance as specified in the respective
sections.
SECTION A
LUBE & GENERAL MAINTENANCE
A-1 Chassis
Any significant fluid loss in any of following systems
or units could mean that a malfunction is developing and
corrective action should be taken immediately.
Lubricate the following system or units:
Front Suspension
Lubricate fittings with water resistant EP chassis
lubricant which meets GM Specification 6031M.
NOTICE: Ball joints should not be lubricated unless
their temperature 1s 10°F (-12°C), or higher. During
cold weather, they should be allowed to warm up as
necessary before being lubricated.
Steering Linkage
(Also a Safety Service)
Lubricate fittings with water resistant EP chassis
lubricant which meets GM Specification 6031M.
Transmission Shift Linkage (Manual and
Automatic)
(Also Safety Service)
Lubricate shift linkage and on manual transmission
floor controls lever contacting faces with water resistant EP
chassis lubricant which meets GM specification 6031 M.
Hood Latches
Lubricate hood latch assembly and hood hinge
assembly as follows:
1. Wipe off any accumulation of dirt or contamination
on latch parts.
2. Apply Lubriplate or equivalent to latch pilot bolts
and latch locking plate.
3. Apply light engine oil to all pivot points in release
mechanism, as well as primary and secondary latch
mechanisms.
4. Lubricate hood hinges.
5. Make hood hinge and latch mechanism functional
check to assure the assembly is working correctly.
Hinges
The following points should be checked and lubricated:
hinges on all doors, fuel filler door, door lock striker and
door jamb switches.
Parking Brake Pulley, Cable and Linkage
(Also a Safety Service)
Apply water resistant EP chassis lubricant which meets
GM specification 6031M, to parking brake cable at cable
guides and at all operating links and levers.
Accelerator Linkage
(Also a Safety Service)
Lubricate carburetor stud and carburetor lever and
accelerator pedal lever at support with engine oil.
Body Lubrication
See Body Service Manual for body lubrication.
A-2 Fluid Levels
Check battery and the following fluid levels:
Battery Care
The original equipment battery needs no periodic
maintenance. Its top is permanently sealed (except for two
small vent holes) and has no filler caps. Water will never
have to be added.
Check for damage which could allow electrolyte leak
such as cracked or broken case or cover. Check terminals
and terminal area for broken parts and inspect for cracks.
The hydrometer (test indicator) in the top of the
battery provides information for testing purposes only. See
Section 6D for battery test procedures.
CAUTION: Follow the precautions listed
below when jump starting or when
working on or near the battery. The
instructions below must be followed
exactly or personal injury (particularly to
eyes) or property damage may result from
battery explosion, battery acid, or
electrical (short circuit) burns.
e THE MAJOR SAFETY
PRECAUTION IS TO MAKE THE FINAL
CONNECTION TO GROUND (A SOLID
STATIONARY METALLIC OBJECT) ON
THE ENGINE AT SOME DISTANCE
FROM THE BATTERY. THIS HELPS
REDUCE THE CHANCE OF AN
EXPLOSION DUE TO SPARKS.
e To lessen the chance of an
explosion, never expose the battery to
open flames or electric sparks. Also do
not smoke near the battery. Batteries
give off a gas which is flammable and
CORVETTE EDP na m.
0B-4 MAINTENANCE AND LUBRICATION
explosive.
eo To lessen the risk of injury in case
an explosion does occur, wear oye
protection or shield your eyes when working
near any battery. Do not lean over a battery.
e Do not allow battery fluid to contact eyes,
skin, fabrics, or painted surfaces because battery
fluid is a corrosive acid. Flush any contacted
area with water immediately and
thoroughly. Also get medical help if eyes
are affected.
e To lessen the risk of a short circuit, remove
rings, metal watch bands and other metal jewelry.
Also do not allow metal tools to contact at the
same time the positive battery terminal (or any
metal connected to this terminal) and any other
metal on the vehicle.
Make certain when attaching the jumper
cable clamps to the positive terminals of the
batteries that neither clamp contacts any other
metal.
Master Cylinder
(Also a Safety Service)
Check fluid level in each reservoir and maintain 1/4”
below lowest edge of each filler opening with Delco Supreme
No. 11 or DOT-3 hydraulic brake fluid, or equivalent.
A low fluid level in the brake master cylinder can
indicate worn disc brake pads, and should be checked
accordingly.
Power Steering System
(Also a Safety Service)
Add GM Power Steering Fluid (GM 1050017) or
equivalent as necessary (fig. OB-2):
e If fluid is warmed up (about 150°F or 66°C--hot to
the touch), it should be between "Hot" and “Cold” marks
on the filler cap indcator.
e If cool (about 70°F or 21°C), fluid should be between
“Add” and "Cold” marks.
Fluid does not need periodic changing.
Rear Axle (Limited-Siip) Lubricant
Check lubricant level. Add lubricant, if necessary, to
fill to level of filler piug hole. Use gear lubricant GM
1052271/1052272 or equivalent.
Automatic Transmission Fluid
Use only automatic transmission fluid labeled
DEXRON® II or equivalent.
Check the automatic transmission fluid level at each
engine oil change period. Overfilling can cause foaming and
loss of fluid. Transmission damage can result. Low fluid
level can cause slipping or loss of drive.
Automatic transmissions are often overfilled because
the fluid level is checked when the fluid is cold. When cold,
the dipstick shows that fluid should be added. However, the
low reading is normal, the level will rise as the fluid gets
warm. The fluid level will increase more than 3/4 inch
(19mm) as fluid warms up from 60°F to 180°F (16°C to
82°C).
CORVETTE SHOP MANUAL
taa
“HOT”
“COLD”
NN
“ADD”
Fig. OB-2-Power Steering Filler Cap
Check the transmission fluid level with the engine
running, the shift lever in “Park”, and the car level..
NOTICE: If the car has just been driven for a long time
at high speed or in city traffic in hot weather, or.if the
car has been pulling a trailer, the correct fluid level
cannot be read. Wait until the fluid has cooled down
— (about 30 minutes).
Remove the dipstick. Carefully touch the wet end of
the dipstick to find out if the fluid is cool, warm or hot. Wipe
it clean and push it back in until cap seats. Pull out the
dipstick and read the fluid level (fig. 0B-3).
e Hit felt cool, about room temperature, the level
should be 1/8 to 3/8 inch (3 to 10mm) below the " Add”
mark. The dipstick has two dimples below the "Add" mark
to show this range.
e Ifit felt warm, the level should be close to the “Add”
mark (either above or below).
e If it was too hot to hold, the level should be at the
“Full” mark.
NOTICE: DO NOT OVERFILL it takes only one pint
(0.5 litre) to raise level from “Add” to "Full with a
hot transmission.
Manual Transmission Lubricant
Check lubricant level. Add lubricant, if necessary, to
fill to level of filler plug hole.
Use SAE 80W GL-5 or SAE 80W-90 GL-5 gear
lubricant. For those vehicles driven in Canada, use SAE
80W GL-5 gear lubricant.
A en
MAINTENANCE AND LUBRICATION 0B-5
Fig. OB-3-Automatic Transmission Dipstick
Windshield Washer Fluid
(Also a Safety Service)
Fill the washer jar only 3/4 full during the winter to
allow for expansion if the temperature should fall low
enough to freeze the solution.
e Check the washer fluid level regularly--do it often
when the weather is bad.
e Use a fluid such as GM Optikleen or equivalent to
help prevent freezing damage, and for better cleaning.
e Do not use radiator antifreeze in the windshield
washer; it could cause paint damage.
e In cold weather, warm the windshield with
the defrosters before using the washer-to help
prevent icing that may block the driver's vision.
Cooling System Care
Do not remove radiator cap to check coolant level.
Instead, check by looking at the "see through” coolant
recovery tank. Level should be at the “Full Cold” mark on
the recovery tank when the system is cold; and at the "Full
Hot” mark during engine operation. Add a 50/50 mixture
of a good quality ethylene glycol antifreeze and water to the
recovery tank when more coolant is needed. If frequent
additions are needed, cooling system.
NOTICE: If the proper quality antifreeze is used, there
is no need to add extra inhibitors or additives that claim
to improve the system. They may be harmful to the
proper operation of the system, and are an unnecessary
expense.
A-3 Manual Transmission Clutch Adjustment
Clutch adjustment should be checked and adjusted as
necessary to compensate for clutch facing wear. To check,
depress pedal by hand until resistance is felt. Free travel
should be approximately one to one and a half inches; if very
little or no free travel is evident, clutch adjustment is
required.
A-4 & 5 Engine Oil and Filter
(Also an | Emission Service)
Engine Oil and Filter Recommendations
e Use only SE quality engine oils (see markings on
containers). Do not use engine oil marked SE/CD.
e Change oil each 7,500 miles (12 000 km) or once a
year, whichever occurs first. Change oil filter at the first oil
change and each second oil change after that, if the car is
driven more than 7,500 miles (12 000 km) per vear. If oil
is changed once a year, change the filter each time you
change oil.
e Change oil and filter each 3,000 miles (4 800 km) or
3 months if often:
e Driving in dusty areas
e Pulling a trailer
e idling for long periods
e Driving 4 miles (6 kilometres) or less in freezing
weather. |
e After driving in a dust storm, change the oil and filter
as SOON as you can.
e The oil and filter change intervals for the engine is
based on the use of SE quality oils and high quality fiiters
like AC oil filters or equivalent. Use of non-SE oils or oil
change intervals longer than listed, could reduce engine life
and might affect warranty.
e The engine was filled with an SE quality engine oil
when it was built. You do not have to change this oil before
the suggested change period. Check the oil level often when
engine is new.
Qil Viscosity
Use the chart (fig. 0B-4) to select the proper oil
thickness (called viscotity or SAE Viscosity Grade) for the
temperature range expected before next oil change. This
helps cold and hot starting. If will also give good engine life,
and fuel and oil mileage.
Checking Oil Level
e Warm The best time to check the engine oil level
is when the oil is warm, First allow the oil to drain back
to the oil pan. Then pull the dipstick out, wipe it clean, and
push it back down all the way. Now pull the dipstick out
and look at the oil level on the dipstick. Some dipsticks are
marked with “Add” and “Full” lines. others are marked
*add 1 Qt.” and "Operating Range. In all cases the oil
Jevel should be kep above the “Add” line. Push the
dipstick back down all the way after taking the reading. Add
oil if needed.
e Cold If oil level is checked when oil is cold, do not
run the engine first. The cold oil will not drain back fast
enough to the pan to give a true oil level.
Engine Oil Additives
The engine should not need these extra engine oil
helpers or additives if SE quality engine oil is used and
changed as suggested. If you think your engine has an oil
related problem, refer to Section 6A.
A-6 Tire Rotation
To equalize wear, rotate tires as illustrated in Figure
0B-5 and adjust tire pressures as shown on the tire placard
which is located on the left front door edge. Radial tires
should be rotated at first 7,500 miles (12 000 km) and then
at least every 15,000 miles (24 000 km) thereafter.
inflation Pressure
The cold inflation pressures listed on the Tire Placard
provide for the best balance of tire life, riding comfort, and
vehicle handling under normal driving conditions. Incorrect.
tire inflation pressures can have adverse affects on tire life
and vehicle performance (fig. 0B-6). Too low an air pressure
causes increased tire flexing and heat build-up. This
weakens the tire and increases the chance of damage or
failure. It can result in tire overloading, abnormal tire wear,
adverse vehicle handling, and reduced fuel mileage. To high
CORVETTE ED iii
08-6 MAINTENANCE AND LUBRICATION
RECOMMENDED SAE VISCOSITY GRADES
NOTICE: Do not use SAE 5W-20 oils for continuous
high-speed driving.
Fig. O0B-4-Engine Oil Viscosity Chart
an air pressure can result in abnormal wear, harsh ride, and
also increase the chance of damage from road hazards.
Tire inflation pressures should be checked (this
includes the spare tire, unless it is a stowaway spare) at least
monthly and when significantly changing the load in the
vehicle. Always check tire inflation pressures when tires are
“cold.”
1. The “cold” tire inflation pressure applies to the tire
pressure when a vehicle has not been driven more than one
mile (1.6 kilometre) after sitting for three hours or more.
2. It is normal for tire pressures to increase 4-8 psi
(30-60 kPa) or more when the tires become hot from
driving. Do not “bleed” or reduce tire inflation pressures
after driving car. Bleeding serves to reduce “cold” inflation
pressure and increase tire flexing which can result in tire
damage and failure.
3. For sustained driving at speeds of 75 mph
to 85 mph (120 km/h to 140 km/h) in countries
where permitted by law, cold inflation pressures must be
increased 4 psi (30 kPa) above the stated cold inflation
pressures on the Tire Placard up to the maximum for each
load range stated in the chart below.
Sustained speeds of 75 mph to 85 mph (120
km/h to 140 km/h) are not advised when the 4 psi
FRONT FRONT
4 WHEEL 5 WHEEL
ROTATION ROTATION"
ROTATION - RADIAL
*Oo not include “temporary use only” spare tire in rotation.
Fig. OB-5-Tire Rotation
N NS >
N \
x N \
\ x \
X N N
\ \ \
\ \ `
\ \ S
* +
N N
1 i
PROPERLY INFLATED IMPROPERLY INFLATED
RADIAL TIRE
Fig. OB-6-Properly Inflated Tire
adjustment would require pressures greater than the
maximum for each load range stated on the chart.
Sustained driving at speeds over 85 mph (140
km/h). where permitted by law, is not advised
unless your vehicle is equipped with special high speed tires.
4. When towing trailers, tires should be inflated to the
"Cold Tire Pressure” for "Max. Load” shown on the Tire
Placard on the left front door.
The allowable passenger and cargo load for the car,
also shows on the same placard, is reduced by an amount
equal to the trailer tongue load on the trailer hitch.
5. Always use a tire pressure gage (a pocket type gage
is advised) when checking inflation pressures. Visual
inspection of tires for inflation pressures is not enough,
especially in the case of radial tires. Underinflated radial
tires may look similar to correctly inflated radial tires. If
the inflation pressure on a tire quite often is found to be low,
correct the cause.
6. Be sure to reinstall the tire inflation valve caps, if
so equipped, to prevent dirt and moisture from getting into
the valve core which could cause air leakage.
7. If an air loss occurs while driving, do not drive on
the deflated tire more than is needed to stop safely. Driving
even a short distance on a deflated tire can damage a tire
and wheel beyond repair.
Inspection and Rotation
To obtain maximum tire life, inspect and rotate tires
regularly. Radial tires should be rotated at the first 7,500
miles (12 000 km) and then at least every 15,000 miles (24
000 km), or whenever uneven tire wear is noticed.
After rotation be sure to check wheel nut tightness and
adjust the tire pressures, front and rear (Sec Tire Placard).
CAUTION: Before installing wheels, any
build-up of corrosion on the wheel
mounting surface and brake drum or disc
mounting surface should be removed by
scraping and wire brushing. installation
of wheels without good metal-to-metal
contact at the mounting surfaces can
cause wheel nuts to loosen, which can
later allow the wheel to come off while
the car is in motion, possibly causing loss
of control.
NOTICE: Brakes should be inspected for wear when
the tires are rotated.
A-7 Rear Axle And Manual Transmission
Rear Axle
Drain, add 4 oz. of GM Part No. 1052358 lubricant
additive or equivalent and then fil! to level of filler plug hole
with gear lubricant GM 1052271/1052272 or equivalent
after the first 7,500 miles (12 000 km). Change lubricant
every 15,000 miles (24 000 km) when using vehicie to pull
a trailer.
Manual Transmission
Check lubricant level and add if needed.
A-8 Cooling System
(Also an Emission Service)
The coolant recovery system is standard. The coolant
in the radiator expands with heat, and the overflow 1s
collected in the recovery tank. When the system cools down,
the coolant is drawn back into the radiator.
The cooling system has been filled at the factory with
a quality coolant that meets General Motors Specification
1899-M.
Service
The cooling system should be serviced each year or
15,000 miles (24 000 km) as follows:
1. Wash radiator cap and filler neck with clean water.
2. Check coolant level and test for freeze protection.
3. Have system and radiator cap tested for proper
pressure holding capacity, 15 pst (105 kPa). If replacement
cap is needed, use a cap designed by AC or equivalent for
coolant recovery systems and specified for your model.
4. Tighten hose clamps and inspect all hoses. Replace
hoses if swollen, “checked”, or otherwise deteriorated.
5. Clean frontal area of radiator core and air
conditioning condenser.
Flush and Refill
Every two years or 30,000 miles (48 000 km),
whichever occurs first, the cooling system shouid be flushed
and refilled as follows:
1. Remove radiator cap when engine 1s cool:
e Rotate cap slowly to the left until it reaches a “stop”
(Do not press down while turning the cap).
e Wait until pressure is reiteved (indicated by a hissing
sound); then press down on cap and continue to rotate to
the left.
CAUTION: To help avoid the danger of
being burned, do not remove the radiator
cap while the engine and radiator are still
hot. Scalding fluid and steam can be
blown out under pressure if the cap is
taken off too soon.
2. With radiator cap removed, run the engine until
upper radiator hose is hot (this shows that the thermostat
is open and the coolant is flowing through the system).
3. Stop engine and open radiator drain valve to drain
coolant. (Drainage may be speeded by removing drain plugs
in the block.)
MAINTENANCE AND LUBRICATION 0B-7
4. Close drain valve (install block drain plugs, if
removed). Add water until system is filied.
5. Repeat steps 3, and 4 several times until the drained
liquid is nearly colorless.
6. Drain system and then close radiator drain valve
tightly. (Install block drain plugs, 1f removed.)
7. Remove recovery tank cap, leaving hoses in place.
Remove coolant recovery tank and empty fluid. Scrub and
clean inside of tank with soap and water. Flush well with
ciean water and drain. Reinstall tank.
8. Add enough ethylene glycol solution, meeting GM
Specification 1899-M, and water to provide the required
cooling function as well as freezing and corrosion
protection. Use a 50 percent solution, -34°F (-36°C), but no
more than a 70 percent solution. Fill radiator to the base
of the radiator filler neck and raise level of coolant in the
recovery tank to the "Full Hot” mark. Reinstall recovery
tank cap.
9. Run engine, with radiator cap removed, until
radiator upper hose is hot.
10. With engine idling, add coolant to radiator until
level reaches bottom of filler neck. Install cap, making sure
arrows line up with overflow tube.
It is the owner's responsibility to:
e Maintain cooling system freeze protection at -34°F
(-37°C) to ensure protection against. corrosion and loss of
coolant from boiling. This should be done even if freezing
temperatures are not expected.
e Add ethylene glycol base coolant that meets GM
Specification 1899-M when coolant has to be added because
of coolant loss or to provide added protection against
freezing at temperatures lower than -34°F (-37°C).
NOTICE: Alcohol or methanol base coolants or plain
water alone should not be used in a vehicle at any time.
Radiator Pressure Cap
The radiator cap, a 15 psi (105 kPa) pressure type, must
be installed tightly, otherwise coolant may be lost and
damage to engine may result from overheating, Radiator
pressure caps should be checked periodically for proper
operation.
Thermostat
The engine coolant temperature is controlled by a
thermostat. It stops coolant flow through the radiator until
a pre-set temperature is reached. This thermostat is installed
on the engine block. The same thermostat is used in both
winter and summer.
A-9 Wheel Bearing
For normal application, clean and repack front wheel
bearings with a high melting point wheel bearing lubricant
at each front brake lining replacement or 30,000 miles (48
000 km), which ever occurs first. For heavy duty application
such as police cars and taxi cabs, clean and repack front
wheel bearings at each front brake lining replacement or
15,000 miles (24 000 km) which ever occurs first.
Use Wheel Bearing Lubricant GM Part No. 1051344
or equivalent. This is a premium high melting point
lubricant.
CORVETTE SHOP MANUAL
0B-8 MAINTENANCE AND LUBRICATION
NOTICE: "Long fiber” or “viscous” type lubricant _
should not be used. Do rot mix wheel bearing
lubricants. Be sure to thoroughly clean bearings and
hubs of all old lubricant before repacking.
Tapered roller bearings used in this vehicle have
a slightly loose feel when properly adjusted. They must
never be over tightened (preloaded) or severe bearing
damage may result. -
Refer to section 3C for proper detailed adjustment
procedures and specifications. |
A-10 Manual Steering Gear
The steering gear is factory-filled with steering gear
lubricant. Seasonal change of this lubricant should not be
performed and the housing should not be drained-no
lubrication is required for the life of the steering gear.
Inspect for seal leakage (actual solid grease-not just oily
film). If a seal is replaced or the gear 1s overhauled, the gear
housing should be refilled oniy with the proper Steering
Gear Lubricant as noted below.
NOTICE: Use only 1052084 Steering Gear Lubricant
which meets GM Specification 4673M, or its
equivalent.
Do not use EP chassis lube, meeting GM
Specification 6031M, to lubricate the gear. DO NOT
OVER-FILL the gear housing.
A-11 Clutch Cross-Shaft
Remove the plug, install a lubrication fitting and
— lubricate with water resistant EP Chassis Lubricant which
meets GM Specification 6031M.
A-12 Automatic Transmission Fluid
Refer to A-2 for checking automatic transmission.
Change the transmission fluid and service screen every 15,-
000 miles (24 000 km) if the vehicle has been driven under
one or more of these hot conditions:
e In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C).
e In hill or mountain areas.
e In hill or mountain areas.
e Frequent trailer pulling.
e Frequent trailer pulling.
e Uses such as taxi, police car or delivery service. If
the vehicle was not used mainly under any of these
conditions, change the fluid and service screen each 100,000
miles (160 000 km).
NOTICE: DO NOT OVERFILL it takes only one pint
(0.5 litre) to raise level from “Add” to “Full” with a
hot transmission.
SECTION B
SAFETY MAINTENANCE
B-1 Owner Safety Checks
The maintenance Schedule in the glove box lists items
to be checked by the owner.
CORVETTE SHOP MANUAL
B-2 Tires, Wheels, and Disc Brakes
During tire rotation, check disc brake pads for wear,
and surface condition of rotors while wheels are removed
(see Item A-6). Check tires for excessive or abnormal wear,
or damage. Be sure wheels are not bent or cracked and that
wheel nuts have been tightened to the torque value shown
in Section 3E.
B-3 Exhaust System
Check the complete exhaust system, including the
catalytic converter. Check body areas near the exhaust
system. Look for broken, damaged, missing, or out-of-
position parts. Also, inspect for open seams, holes, loose
connections, or other conditions which could cause a heat
build up in the floor pan, or could let exhaust fumes seep
into the passenger compartment. Dust or water in the
passenger compartment may indicate a2 leak in the area.
Needed repairs should be made at once. To help maintain
system integrity, replace the exhaust pipes and resonators
rearward of the muffler whenever a new muffler is put on.
B-4 Suspension and Steering
Check front and rear suspension, and steering system.
Look for damaged, loose, or missing parts; also for parts
showing signs of wear, or lack of lubrication. Replace
questionable parts at once.
B-5 Brakes and Power Steering
Check lines and hoses for proper hook-up, binding,
leaks, cracks, chafing, etc. Any questionable parts should
be replaced or repaired at once. When rubbing or wear is
noted on. lines or hoses, the cause must be corrected
promptly.
B-6 Engine Drive Belts
(Also an Emission Services)
Check belts driving the fan, AIR pump, generator,
power steering pump, and the air conditioning compressor.
Look for cracks, fraying, wear, and proper tension. Adjust
or replace as needed.
Frayed or cracked belts should be replaced and
tensioned to specifications using a strand tension gage, such
as tool J-23600 or equivalent.
Loose belts may place an extremely high impact load
on driven component bearings due to the whipping action
of the belt.
An over tightened belt places unnecessary loads on the
component bearings.
In the chart, the minimum reading is the lowest
allowable setting before the belt must be reset. When
readjusting, the adjustment specification should be met.
When adjusting a drive belt, it is important that the proper
adjustment specification be used.
NOTICE: A “Used” belt is one that has been rotated
at least one complete revolution on engine pulleys. This
begins the “seating” of the belt and it should never be
reset to “New” belt specifications.
[E
TENSION SPECIFICATIONS
GENERATOR ADJUST TO 75 + 5 LBS. USED
ALA. PUMP | LE.
P/S PUMP MIN. | ADJUST TO 125 + 5 LBS. NEW
A/C 65 LB. | ADJUST TO 95 + 5 LBS. USED
COMPRESSOR | MIN. | ADJUST TO 140 + 5 LBS. NEW
Fig. OB-7-Engine Drive Belt Chart
8-7 Parking Brake
Check parking brake adjustment.
B-8 Throttle Linkage
Check for damaged or missing parts, interference or
binding. Fix any problems at once.
B-9 Bumpers
Check front and rear bumper systems for proper
impact protection and clearance. Check also when a bumper
looks out of position or if it was struck hard--even if no
damage can be seen.
SECTION C
EMISSION CONTROL MAINTENANCE
Refer to Sections 6C or 6E for procedures needed to
service the items below:
C-1 Thermostatically Controlled Air Cleaner
Check all hoses and ducts for correct hookup. Be sure
valve works properly.
C-2 Carburetor Choke and Hoses
Check that choke and vacuum break work properly.
Correct any binding caused by damage or gum on the choke
shaft. Check hoses for proper hookup, cracks, rubbing, or
decay, correct as needed.
C-3 Engine Idle Speed
Adjust jo the specifications shown on the underhood
label. You must use calibrated test equipment.
C-4 Early Fuel Evaporation (EFE) System
Check that valve works properly, correct any binding.
Check that thermal vacuum switch works properly. Check
hoses for cracks, rubbing, or decay. Replace parts as needed.
C-5 Carburetor Mounting
Torque mounting bolts and/or nuts at mileage shown
on Maintenance Schedule.
C-6 Vacuum Advance System and Hoses
Check that system works properly. Check hoses for
proper hookup, cracks. rubbing or decay. Replace parts as
needed.
MM LR] ;zí]—D——;][o [ (UUDDol CL TL ll]]]llll]]];A,—-í;]][[]]]]]]]];]];]l]];;];];]]][]]];[;;]D]];;;TU]—]—]—]]]————;];;l]llo]]]]o];—];]]—]]—]];];]ll]]]]]]]]—];];]]—
COEN ADT
MAINTENANCE AND LUBRICATION 08-8
C-7 Fuel Filter
Replace at mileage shown on Maintenance Schedule or
sooner if clogged.
C-8 Positive Crankcase Ventilation System
(PCV)
Check that system works properly each 15.000 miies
(24 000 km). Each 30,000 miles (48 000 km) replace the
valve, filter and replace worn or plugged hoses.
C-9 Spark Plug Wires
Clean wires. Remove corrosion on terminals. Check
the wires for checks, burns, cracks or other damage. Check
the boot fit at distributor cap and spark plugs. Replace wire
if damaged or if corrosion cannot be cleaned.
C-10 Idler Stop Solenoid and/or Dashpot
Check that parts work properly. Replace them as
needed.
C-11 Spark Plugs
Replace as shown on Schedule. Use the type shown on
underhood label.
C-12 Timing and Distributor Cap
Adjust timing to underhood label specifications. Check
the inside and outside of the cap and rotor for cracks, carbon
tracking and corrosion. Clean or replace as needed.
C-13 Carburetor Vacuum Break
Check that linkage works properly correct any binding.
Check hoses for proper hookup and condition. Replace
parts as needed. If necessary, reset vacuum break as shown
in Section 6C.
C-14 Air Cleaner Element
Replace at mileage shown on Schedule. Replace more
often under dusty conditions.
C-15 Evaporation Control System (ECS)
Check all fuel and vapor lines and hoses for proper
hookup routing and condition. Check that bowl vent and
purge valves work properly, if equipped. Remove canister,
check for cracks or damage. Replace as needed. Replace
canister filter.
C-16 Fuel Cap, Fuel Lines, and Fuel Tank
Check the fuel tank, cap and lines for damage or leaks.
Remove fuel cap, check gasket for an even filler neck
imprint, and any damage. Replace parts as needed.
CORVETTE SHOF MANUS
08-10 MAINTENANCE AND LUBRICATION
_ SPECIFICATIONS
RECOMMENDED FLUIDS AND LUBRICANTS
USAGE
FLUID/LUBRICANT
Power steering system and pump reservoir
GM power steering fluid Part No. 1050017 or equivalent
Rear Axle — Limited-Slip Differential
GM Part No. 1052271 or 1052272" or equivaient
Before filling with above lubricant, add 4 ounces GM
Part No. 1052358 lubricant additive or equivalent
Manual Steering Gear
Lubricant GM Part No. 1052084 or equivalent
Manual Transmission
SAE-BOW or SAE-BOW-90 GL-5 gear iubricant
(SAE-80W GL-5 in Canada)
Brake System and Master Cylinder
Delco Supreme 11 fluid or DOT-3 fluids
Clutch Linkage (Man. Trans. only)
a. Pivot points
b. Push rod to clutch fork joint, and cross shaft
pressure fitting
a. Engine oil
b. Chassis grease meeting requirements of GM 6031-M
Manuai Transmission Shift Linkage, column shift
Chassis Grease
Shift Linkage, floor shift Engine oil
Hood Latch Assembly
a. Pivots and spring anchor a. Engine Oil
b. Release pawl
b. Chassis Grease
Hood and Door Hinges
Engine Oil
Automatic Transmission Shift Linkage
Engine Oil
Chassis Lubrication
Chassis grease meeting requirements of GM 6031-M
Automatic Transmission
DEXRON®-1} Automatic Transmission Fiuid
Key Lock Cylinders
WD-40 Spray Lubricant or equivalent
Parking Brake Cables
Chassis-Grease
Front Wheel Bearings
GM Lubricant, Part No. 1051344 or equivalent
Rear Wheel Inner Bearing
Lubricant GM Part No. 1052497 or equivalent
Body door hinge pins, fuel door hinge
Engine Oi
Engine Oil
“SE” Engine Oil conforming to GM Specs. 6136-M
Windshield Washer Solvent
GM Optikleen washer solvent Part No. 1051515
or equivalent”
Engine Coolant
Mixture of water and a good quality Ethylene Glycol base
antifreeze conforming to GM Spec. 1899-M
J
ED ВН
MAINTENANCE AND LUBRICATION 0B-11
CAPACITIES
IMPERIAL
U.S. MEASURE MEASURE
Differential 4 pts. 34 pts.
Engine Crankcase — Drain & Refill 38L . 4 ats. 3% ats.
— W/Filter Change 46L 5 gts. 4% qts.
Fuel Tank 23.7 gal. 19.7 gal.
Transmission
Automatic 10 915. BVa ats.
Manuai 3 pts. 22 pts.
Cooling System Ш 21 gts. 17% gts.
08-12 MAINTENANCE AND LUBRICATION
VEHICLE LIFTING POINTS
CAUTION: When jacking or lifting vehicle
from frame side rails, be certain lift pads
do not contact catalytic converter as
damage to converter will result.
Many dealer service facilities and service stations are
now equipped with a type of automotive hoist which must
bear upon some part of the frame in order to lift the vehicle.
In Figure OB-8, the shaded areas indicate areas
recommended for hoist contact.
NOTICE: The vehicle should never be lifted by the
rear lower control arms.
==
LLL
E, — ———L"gO[ ;'U os
o]
— CLA
Йа
E роли N
Pb
PT TT J
Zid WITH DRIVE-ON ADAPTORS
_ Rook JACK, JACKSTANDS,
4 DRIVE-ON HOIST, TWO -POST HOIST
Fig. 08-8-- Vehicle Lifting Points
+
il
Origin No. SM-165
317, EVCHIGAN 48202
NI. BH. 8. zoom, MOR,
CONSUZER RELATIONS - DEPT. come 77-616
C-2YR0ET MOTOR IIVISION Subi - _ A
С 1052 ANIOMAUT "A" BUILDING wiect 25TH ANNIVERSARY "LIMITED
ео EDITION" CORVETTE
CHEVROLET MOTOR DIVISI
NN = General Motors Corpora
L0 Ter 17e ~— Centra: Qf
o x =, Detroit, Michigan «
To REGIONAL AND ZONE MANAGERS Date December 21, 1977
Chevrolet will produce a special "Limited Edition” unit as a part of
Corvette's 25th Anniversary celebration. The "Limited Edition” Cor-
vette has been chosen as the official Pace Car ror the 62nd annual .
Indianapolis 500 Race on May 28, 1978. x
A District Manager order taking activity is to take place in early
January, at which time every dealer is to be afforded an opportunity
to order one of these special units. The "Limited Edition" Corvettes
will not be eligible for model year-end close-out allowance. A dealer
acknowledgment form, Attachment "A" - relating to this activity is to
be completed with every dealer and retained in the Zone Office. Zone
Managers are asked to furnish the number of dealers ordering a "Limited
Edition” unit by joint wire to the Regional Manager and Mr. R. F. Sobrero,
{ Central Office Distribution Department, by no later than January 16, 1978.
Distribution procedures and other pertinent details are contained in
Attachment "B". The Manufacturers Suggested Retail Price is $13,653.21 fc
the "Limited Edition" Corvette (Model 1YZ87/278). The "Limited Edition"
unit will not be available for purchase under the Employe Purchase Plan ar
is not to be placed in Company Car Service.
With only a minimum amount of information released for publication, the
response from both dealers and the general public has been enthusiastic.
Shipment of these units will begin in late March and continue until all
orders are produced. This will provide dealers with an opportunity to
develop promotional activities during the height of the Spring selling
season utilizing the "Limited Edition" unit as an excellent showroom
traffic builder.
The "Limited Edition" Corvette represents yet another milestone in Chev-
rolet's marketing strategy of developing and maintaining Corvette's
unique sports car image and mystique in the eyes of the public. We ask
your support in encouraging dealers to take advantage of the many pro-
motional opportunities afforded by this program.
REC/d1k EN E. Cook
C attachments General Sales Manager
cc: Regional Distribution Managers
Area Distribution Center Managers
x Zone Merchandising Managers-Pass. Cars
Zone Distribution Managers
District Managers
LIMITED
Model
—— воно ПО
1Y287/278 Limited Edition Corvette Coupe
278 (Includes Special Two-Tone Paint with Accent
EDITION CORVETTE
Stripes, Special Limited Edition Decals, Rear
Spoiler and Front Air Deflector, Glass Roof
Panels, Contoured Bucket Seats, Alumimmm
Wheels with Accent Stripe, P255/60 R-15
W/L Aramid Belted Tires, LH Remote and RH
Manual Sport Mirrors, Air Conditioning,
Power Windows, Power Door Locks, Stereo
Tape System w/AM/FM Stereo Radio, Power
Anterma, Dual Rear Speakers, Tilt-Telescopic
Steering wheel, Convenience Group, Rear
Window Defogger and HD Battery)
MUST ORDER ONE: ENGINES
AVAILABLE WITH NA2 STANDARD EMISSION EQUIPMENT
148 350 Cu. In. V8
Lez 350 Cu. In. V8
AVAILABLE WITH NAG HICH ALTITUDE EMISSION EQUIPMENT
(Recamended Above 4000 Foot Altitude)
L48 350 Cu. In. v8 (Regs MXÍ Trans)
CALIFORNIA REGISTRATION (REQS YFS)
148 350 Cu. In. V8 (Regs MX1 Trans)
(Ordering Information - To be used in same manner as regular
Dealer Order Guide}
COLOR AND TRIM SELECTION
Seat, Door Trim Color, Silver |
Headliner and Met
Instrument Panel Pad |
Carpet Color Silver |
Gray
Model Seat Type
|287 Bucket | AYY2 |
Cloth/Leather Bucket | HYY2 _:
Exterior Paint Color Code
Color L U
Silver Met./Black | 47 | 19 [KR |
QUICK-SPEC
TRANSMISSION CHOICE MUST BE
SPECIFIED ON ORDER FORM
Limited Edition Corvette 278
(See above for content)
"ap AD 40
Options which may be ordered in addition to
278 Limited Edition Corvette Quick-Spec
PLEASE REVIEW OPTION RESTRICTIONS BEFORE ORDERING
OPTION
G95 AXLE, REAR: Highway Ratio (See Power Teams
— Chart) (Regs L82 Eng and MM4 Trans)
7N1 CHASSIS EQUIPMENT, TRAILERING: (Regs Lás
Eng and MX Trans) Incls FE7 Susp ard
Increased cooling)
EMISSION SYSTEMS: (MUST ORDER ONLY ONE}
(See Power Teams Chart)
YES -—-California Emission Requirements
NA6 --—High Altitude Emission Equipment
NA2 —Standard Emission Equipment
RADIO:
UP6 —AM/FM Stereo Citizens Band Radio and
Power Antenna
K30 SPEED CONTROL: Cruise-Master (Regs MX1
Trans
FE7 SUSPENSION EQUIPMENT: Suspension, Gymkhan:
Front and Rear (Incl w/ZN1 Chassis Equip)
TRANSMISSIONS: (MUST ORDER CNE) (SEE
Power Teams Chart)
MM4 ——4-Speed Manual
M21 --4-Speed Close-Ratio Manual (Regs L82 Enc,
MXI Automatic
POWER TEAMS
AXLE RATIO
ENGINE OPTION CONDITION |
| 3.36 [
3.08 | 3.55
| 3.70
WITHOUT YF5 CALIFORNIA OR NA6 HIGH ALTITUDE EMISSION
LA8 ММА - Std = -
MX1 Std - - -
ММА - G95 - Std
182 M21 - - - Std
MX - - Std -
WITH YFS5 CALIFORNIA
[oe ma
e
With NA6 High Altitude Emission
148 md - | - | 5
CORVETTE
ALPHABETICAL OPTION INDEX
(Not for Ordering Purposes)
Option
Number Description
AU3 DOOR LOCK SYSTEM, POWER
A31 WINDOWS: Power
B2Z 22th ANNIVERSARY TWO-TONE PAINT
УСС! ROOF PANELS: Removable Giass
C49 DEFOGGER, REAR WINDOW: Electro-Clear
C60 AIR CONDITIONING: Four-Season
D35 MIRRORS: Sport, LH Remote and RH Manual
FE? SUSPENSION EQUIPMENT: Suspension, Gym=-
khana
G95 AXLE, REAR: Highway Ratio
K30 SPEED CONTROL: Cruise~Master
La8 ENGINE: 350 Cu. In. V8
L82 ENGINE: 350 Cu. In. Vv8
MM4 TRANSMISSION: 4-Speed Manua |
M21 TRANSMISSION: 4-Speed Close-Ratio Manual
MX1 TRANSMISSION: Automatic
NA2 EMISSION SYSTEMS: Standard Emission
Equipment
NA6 EMISSION SYSTEMS: High Altitude Emission
Equipment
N37 STEERING WHEEL: Tilt=Telescopic
085 TIRES: P255/60 R-15 W/L (Radial)
QGQ TIRES: P225/70 R-15 B/W (Radial)
QGR TIRES: P225/70 R-15 W/L (Radial)
UA 1 BATTERY, HEAVY-DUTY
ULS RADIOS: Radio Not Desired
UM 2 RADIOS: Stereo Tape System w/AM/FM Stereo
Radio
UP6 RADIOS: AM/FM Stereo Citizens Band Radio
and Power Antenna
uss RADIOS: AM/FM Stereo Radio
U69 RADIOS: AM/FM Radio
U75 RADIO EQUIPMENT: Power Antenna
U81 RADIO EQUIPMENT: Speakers, Dual Rear
YF5 EMISSION SYSTEMS: California Emission
Requirements
Y J8 WHEEL TRIM: Wheels, Aluminum
ZN1 CHASSIS EQUIPMENT, TRAILERING
ZP2 EXTERIOR/INTERIOR OVERRIDE
ZX2 CONVENIENCE GROUP
CORVETTE
COLOR AND TRIM SELECTION „я
PLEASE NOTE: The exterior and interior combinations shown In the chart below and designated as
recommended (R), represent the Jdeai combinations. Those that are shown as acceptabie (А), are
attractive, but less desirable than +he recommended combinstions, Orders for addltiona! com
binations may be submitted, provided the desler Inltials the appropriate order form box (ZP2),
as verification that the requested combination 15 definitely desired.
Seat, Toor Trim Color, diack Blue | Brown | Beige Red Mahog-[Cyster
Headliner and Dark | Gark | Light any
| instrument Panei Pad Г
Carpet {olor Black Blue | Brown | Beige | Red Mahog-} Gray
Dark _Dark Light any 1
Mode! Seat Type:
17287 1 Leather Bucket? 1 ARB2 | ADO? | АННЕ AZZS ARRZ | AUNZ |! АНЯ |
_| Elo?h/Leather Bucket _ | HBB2 | WDD? § HHHZ | н222 ) HRRZ | HUNZ | MWWZ
Exterior Paint Color Code
Lt
L=lower U=Upper
POWER TEAMS
{Rafer to next page tor option avallability and appiication)
NGINE OPTION CONDITION | AXLE RATIO
1 3.08 1 3.36 | 3.55 | 3.30
WITHOUT YFS CALIFORNIA OR NAG HIGH ALTITUDE EMISSION
L48 Má - Std - -
MX 1 Sta - - -
be or i or rr a rt ty pp Pe rE Ua rn A AAA mi Wh tne i A Ly a
MM & - G95 - Std
LS? M21 - - - Std
MX I - - Std -
WITH YF5 CALIFORNIA
pes MX 1 I = | - | 5+0 T |
With NAB High Attitude Emission
e MX à | ] - | - | Sra | I
1978 DEALER ORDER GUIDE REVISED: 1.2
CORVETTE
REFER
| Model f IEW OPTION RESTRICTIONS BEFORE ORDERING
9-5 ON
17287 Corvette Coupe 25TH ANNIVERSARY TWO-TONE PAINT
(Reqs YJ8 Wheels, D35 Mirrors and 13 Ex-
COLOR AND TR R_CONDITIONING:
«— 615 AIR CONDITIONING: Four-Season
IM SELECTION AXLE, REAR: Highway Ratio (Ses Power Teams
Chart) (Reqs L8Z2 Eng and MM4 Trans)
516 BATYERY, HEAVY-DUTY
M R : = tell EE ns
231 ORDER ONE ENGINES CHASSIS EQUIPMENT, TRAILERING: (Reqs L48
Eng and MX1 Trans) (lncis FE7 Susp and
AVAILABLE WITH NA2 STANDARD EMISSION EQUIPMENT 615 CONVENTENCE A
— 4 - = —— har ay _
Ce 30 es я va 616 DEFOGGER, REAR WINDOW: Electro-Clear
— Ts 616 DOOR LOCK SYSTEM, POWER
EMISSION SYSTEMS: (MUST ORDER ONLY ONE)
| AVAILABLE WITH NA6 HIGH ALT!TUDE EMISSION EQUIPMENT (See Power cons Chart) | ,
(Recommended Above 4000 Foot Altitude) — Tn anni Em oi a ren S
L48 350 Cu. In, V8 (Reas MX! Trans) — -.Stenderd Emission Equipment
| £13 2 Sport, LH Remote and RH Manual
CALIFORNIA REGISTRATION (REQS YES) BARS aus, ORDER ONE)
L48 350 Cu. In. V8 (Rags MX! Trans) $75 --AM/FM Stereo Radio
516 «=Stereo Tape System w/AM/FM Stereo Radio
| —— AM/FM stereo Citizens Band Radio and
! ower nranna
| UICK-SPEC -=Radio Not Desired
— RADIO EQUIPMENT:
IF TIRE AND/OR TRANSMISSION IN QUICK. + y y 616 --Power Antenna (N/A UL5 or UP6 Radio)
SPEC 15 NOT DESIRED YOU MUST “PLUS” 1 1 616 --Speakers, Dual Rear (N/A ULS ог U69
ANOTHER TIRE AND/OR TRANSMISSION 56 ROOF PANELS : Removable Glass
OPTION. 7 ВВ 616 SPEED CONTROL: Crulse=Master (Regs МХ!
Sy Condir oning, Four-season Se x 615 STEERING WHEEL: T111-Telescopic
greening yheoi, 111 Telescoptc Mal x X SUSPENSION EQUIPMENT: Suspension, Gymkhana.
Nindows pole. A31 X X Front and Rear (Inci w/ZN1 Chassis Equip)
nim ewe ON ix De Sheek
Radio, AM/FM Stereo 2 --Steel Selted Radial Piy
Convenience Group sr o ---P225/70 R-15 B/W (Base)
Mirrors, Sport 935 x 615 ---P225/70 R-15 W/L
Stereo Tapes — UN mn -~Aramid Belted Radlai Ply
. -—-P255/60 R-15 W/L
w/AH/FM Stereo Radio M2 X TRANSMISSIONS: (See Power Teams Chart)
Battery, Heavy-Duty UAI X -—A-Spoed Manual
Antenna, Power aa x - --4-Speed Close-Ratlo Manual (Reqs L82 Eng)
Defogger, Rear Window C49 ETS -- Automatic
Speed Control (w/MX1 Trans Onty} K30 X — WHEEL TRIM: Wheels, Aluminum
Door Lock System, Power AU 3 X 615 WINDOWS: Power ’
Speakers, Dual Rear Ug X — нм
REVISED: 1-20-78 1978 DEALER ORDER GUIDE CORVETTE
ot YIndicates Change Page 3
CORVETTE
“Model
1YZ87 Ч
Corvette Coupe PLEASE REVIEW OPTION RESTRICTIONS BEFORE ORDERING
7-5 OPTION
— B2Z 25TH ANNIVERSARY TWO-TO'/E PAINT
{Reqs YJB Wheels, 035 Mirrors and 13 Ex=
<« COLOR AND TRIM SELECTION terlor Palnt)
613 C60 AIR CONDITIONING: Four=5eason
- G95 AXLE, REAR: Highway Ratlo (See Power Teams
- Chart) (Reqs L872 Eng and MM4 Trans)
MUST ORJER ONE: ENGINES 616 ЦА! BATTERY, HEAVY-DUTY ©
— Z2N1 CHASSIS EQUIPMENT, TRAILERING: (Reqs L48
AYA ILASLE WITH NAZ STANDARD EMISSION EQUIPMENT LAS and MX] Trans) (incls FE7 Susp and
Ya ncressed cooling)
EM 615 * 2X2 CONVENIENCE GROUP
— 52 350 Си. In, 616 C49 DEFOGGER, REAR WINDOW: Electro-C lear
— AU3 DOOR LOCK SYSTEM, POWER
AVAILABLE WITH NAG HIGH ALTITUDE EMISSION EQUIPMENT ROL STEMS L (HUST ORDER ONLY ONE)
[Recommended Above 4000 Foot Altitude) YES --Callfo IL EAS Chart)
— Las 350 Cu. In. VO (Reqs MXI Trans) _ — =-Ca ornta Emisslon Requiremants
— —— NAS =-HIgh Altitude Emission Equipment
ee NAZ --Standard Emission Equipaent
CALIFORNIA REGISTRATION (REQS YFS) 616 D35 MIRRORS: Sport, LH Remote and RH Manual
L48 350 Cu. ln. Y8 (Regs MX! Trans) RADIOS: (MUST ORDER ONE)
— * > U69 ==AM/FM Radlo
615 USB -—-AM/FM Stereo Radio
616 UM2 =-S<tereo Tape System w/AM/FM Sterec Radlo
, —— UP6 --AM/FM Stereo Ci+Izens Band Redio and
QUICK-SPEC Power Antenna
— UL5S =-Radlo Not Deslred
IF TIRE AND/OR TRANSMISSION IN QUICK- RADIO EQUIPMENT:
к n 6 6 616 Ч75 ««Power Antenna (N/A ULS or UPE Radlo)
SPEC IS NOY DESIRED YOU MUST “PLUS” | 1 —— YUu8l --Speakers, Dual Rear (N/A U6% Radio)
ANOTHER TIRE AND/OR TRANSMISSION 5 5 616 K30 SPEED CONTROL: Crulse-Master (Reqs MX1
OPTION. A A Trans)
615 N37 STEERING WHEEL: Tlit-Telascopic
Alr Conditioning, Four=Season coo X X —_— FE7 SUSPENSIÓN EQUIPMENT: Suspension, Gymkhana.
Steering Wheel, Tilt-Telescopic N37 X X Front and Rear (inci w/ZN1 Chassls Equip)
Transmission, Automatic MX! x X TIRES: (B/W: Blackwall,
Windows, Power A31 X X W/L: White Lettered)
Tiras, P225/70 R~15 W/L QGR X X ==Stoel Balted Radial Piy
Radlo, AM/FM Stereo U58 X me — QGQ ---P225/70 R=15 B/W (Base)
Convenlence Group 2х2 X X 615 QGR ===P225/70 R-15 W/L
= J -~Aromld Belted Radial Fly
Stereo Tape 985 ---P255/60 R-15 W/L
“/AM/FM Stereo Radlo UM2 X — TRANSMISSIONS: (See Power Teams Chart)
Battery, Heavy-Duty UAl X — MM4 =——-4-Spsad Manual
Antenna, Power U7S X M21 --4-Spead Close-Ratlio Manual (Reqs LB2 Eng}
Defogger, Rear Window C49 X 615 — MX! --Automatic
Spoad Control (w/MX1 Trans Only) K30 X YJ8 WHEEL TRIM: Wheels, Aluminum
Mirrors, Sport 035 X 615 A31 WINDOWS: Power
REVISED: 9-22.77 1978 DEALER ORDER GUIDE CORVETTE
Vindicates Change Page 3
Includes Special Two-Tone Paint h Accent
Stripes, Special Limited Edition Decals, Rear
Spoiler and Front Air Deflector, Glass Roof
Panels, Contoured Bucket Seats, YJ8 Aluminum
Wheels with Accent Stripe, QBS P255/60 R-15
W/L Aramid Belted Tires, D35 LH Remote and
RH Manual Sport Mirrors, C60 Air Conditioning,
A31 Power Windows, AU3 Power Door Locks, UM2
Stereo Tape System w/AM/FM Stereo Radio,
U75 Power Antenna, U81 Dual Rear Speakers,
N37 Tilt-Telescopic Steering Wheel, ZX2
Convenience Group, C49 Rear Window Defogger
and UAl HD Battery.
Includes Special Two-Tone Paint with Accent Stripes,
Special Limited Edition Decals, Rear Spoiler amd TOU E£C № Buckel
Front Air Deflector, Glass Roof Panels, YJ8 ATumintm
Wheels with accent Stripe, QBS P255/60 R-15 w/L
Aramid Belted Tires, D35 LH Remote and RH Manual Sport
Mirrors, C60 Air Conditioning, A31 Power Windows,
AU3 Power Door Locks, UM2 Stereo Tape System
w/AM/FM Stereo Radio, U75 Power Antenna, U8l Dual
Rear Speakers, N37 Tilt-Telescopic Steering Wheel,
ZX2 Convenience Group, C49 Rear Window Defogger
and UAl HD Battery.
Includes Special Two-Tone Paint with Accent Stripes,
Special Limited Edition Decais, Rear Spoiler and
Front Air Deflector, Glass Roof Panels, Aluminum
Wheels with Accent Stripe, P255/60 R-15 W/L Aramid
Belted Tires, LH Remote and RH Manual Sport Mirrors,
Air Conditioning, Power Windows, Power Door Locks,
Stereo Tape System w/AM/FM Stereo Radio, Power
Antenna, Dual Rear Speakers, Tilt-Telescopic .
Steering Wheel, Convenience Croup, Rear Window
Defogger and HD Battery.
CO RV ETTE REFER
STOPS
-
обе!
дэ FT = 0
1YZS7 Corvette Coupe
PLEASE REVIEW OPTION RESTRICTIONS BEFORE ORDERING
0.5 OPTION
— 27 25TH ANNIVERSARY TWO=TOME PAINT ™
= (Reqs YJB Wheels, D35 Mirrors and 13 Ex-.
<«COLOR AND TRIM SELECTION terior Palnt)
613 C60 AIR CONDITIONING: Four-Season
— G95 AXLE, REAR: Highway Ratlo (See Power Teams
, Chart) (Regs LAZ Eng and MM4 Trans)
<UST ORDER ONE: ENGINES 616: uAt BATTERY, HEAVY-DUTY
— . 2N1 CHASSIS EQUIPMENT, TRAILERING: (Reqs L48
AVAILABLE WITH МА? STANDARD EMISSION EQUIPMENT eng and MX1 Trans) (Incls FE? Susp and
(аа 350 Cu. In. Va _ ncressed cooling)
"7 182 350 Cu, In. YA 615 ZX2 CONVENIENCE GROUP
— " * 616 C49 DEFOGGER, REAR WINDOW: ElectrosClienar -
—.. AU3 DOOR LOCK SYSTEM, POWER -; +=
AVAILABLE WITH NA6 HIGH ALTITUDE EMISSION EQUIPMENT „EMISSION SYSTEMS: (MUST ORDER ONLY ONE)
+ ee Power Teams Chart)
{Recommended Above 4000 Foot Altitude) YF5 Calif I R
148 350 Cu. In. v8 (Reqs MX! Trans) — ==La ornla Emission Reguiremants
— — NAS --High Altitude Emission Equipmant
—_— NA2 ==5tandard Emission Equlpmant
CALIFORNIA REGISTRATION (REQS YFS) "886 035 MIRRORS: Sport, LH Remote and RH Manual .
[48 350 Cu. in. V8 (Reqs MX! Trans) RADIOS: (MUST: ORBER ONE) —]—]][ TE
— « {me —. 69 —=AM/FN Radio - 23
613 О58 <<AM/FM Stereo Radio
516 UM2 ==Stereo Tape System w/ AM/FM. Stereo Radio.
. — UP§ --AM/FM Sterac Citizens Band Radio and
ONICK-SPEC Power Antenna
==; - MES =-Redio Not Desired =,
- RADIO. EQUIPMENT: =
ANDO TRANSMISSION IM PLUS" 6 6 616. 475 ==Fower Antenna (N/A ULS or-UP6 Radio)
- — 11 "4081 e=Speakers, Dual Rear (N/A U69- Radio)
ANOTHER TIRE AND/OR TRANSMISSION 5 6 616 K30 SPEED CONTROL: Crulse-Master (Reqs HMX1
OPTION. A A Trans)
-615. N37 STEERING WHEEL: Tiit=Telescopic
Alr Conditioning, Four=Season có X X —_— FE? SUSPENSION EQUIPMENT: Suspension, Gymkhana.
Steering Wheel, Tiit=Telescoplic N37 X X Front and Rear (Inci w/ZN1 Chassis Equip)
Transmission, Automatic MXI X X TIRES: (8/W: Biackwalt,
Windows, Power A31 x x W/L: White Lettered)’
Tires, P225/70 R=15 W/L JGR X X =-=5190 1 Baltod Radial Ply
Radio, AM/FM Stereo 158 X № 7060 <=-P225/70 R=15 B/W (Basa). = ; _
Convenience Group 2x2 x x ее QGR- ==aP225/70 R=15 W/L “a ==
- ea --Aramid Delted Radial PIy*
Stereo Tape ___ “gas -=<P255/60 R=15 W/L то сонет Пе
w/AM/FM Stereo Radlo UM2 X "TRANSMISSIONS: (See Power Teams Chart)
Battery, Heavy-Duty UA! X mm MMÁ ==4=5pgad Manual
Antenna, Power U75 X M21 ==4=5peed Close-Ratio Manual (Reqs L82 Eng)
Defogger, Rear Window C49 X 615 MX1 —=Automatic
Speed Controi (w/MX1 Trans Only) K30 X — 196 WHEEL TRIM: Wheels, Aluminum...
Mirrors, Sport 935 X 615 AJI WINDOWS: Power :
я. aps a
F ai “ Lia - CoE
REVISED: 9-22-77 1978 DEALER ORDER GUIDE CORVETTE
VIndicates Change Page 3
From
Di ilalia Dalatinne Manartmant
ORIGINAL
EROR: RELEASE SEPTEMBER 15, 1977
(48231)
1978 CORVETTE
The Chevrolet Corvette marks a 25th anniversary milestone
in 1978 with new fastback appearance and improvements in per=-
formance and handling.
The new aerodynamic look is the most extensive change for
Corvette in several years. Refinements in comfort, convenience,
improved utility and increased operating range add to the appeal
of America's only authentic sports car.
Retaining its traditional distinction as America's one-of-
a-kind fiberglass-bodied sports car, the 1978 Corvette spotlights
these changes:
. Fastback roofline with a wraparound rear glass area
more than three and a half times larger than before.
. Completely restyled interior with larger and more
accessible rear stowage area that has a security cover.
. Performance gains for optional L82 high performance
5.7 litre (350 CID) engine with increased power and
torque ratings.
- New tinted glass lift-out roof panels.
. Special 25th anniversary emblems and a special 25th
anniversary two-tone paint option.
. Increased operating range with a 24-~gallon fuel cell
replacing the former l7-gallon unit.
(more)
The most striking feature of 1978 Corvette styling is the
wraparound rear glass which provides greater rear quarter visibility
with 1,425 square inches of surface area compared with 293 square
inches on the former model.
Inside, under the glass, a security cover can be pulled forward
and hooked to conceal luggage and other articles from view.
Power and torque ratings of the optional 5.7 litre (350 CID)
V8 engine have been increased for 1978 by improvements in the cold
air induction and in the exhaust system. A new dual snorkel
carburetor air inlet systen delivers greater amounts of cool,
dense air while larger diameter exhaust and tailpipes and lower
restriction mufflers reduce back pressure.
The three-speed automatic transmission used with the optional
5.7 litre engine is lighter weight and has a low inertia, high
stall torque converter for increased performance. The rear axle
ratio of the engine used above 4,000 feet altitude and in California
has been changed from 3.08 to 3.55-to-1 to give better starting
ratio and more responsive performance throughout the speed range.
To commemorate the 25th year of Corvette production, a
special Silver Anniversary paint option will be offered. It
includes a two-tone silver and gray paint treatment which accen-
tuates body contours.
The new Corvette has improved cruising range with a new 24-
gallon fuel cell replacing the previous 17-gallon tank. The new
fuel cell has a molded plastic inner liner in a steel container.
Space for the larger cell is made available by the use and stowage
of a new, lighter weight temporary spare.
(more)
Six of the ten distinctive exterior colors are new for
1978 and there is a choice of seven interiors, four of which
are new...
Other 1978 features are:
- A new one-piece full padded instrument panel with
front-mounted cluster that can be removed more
readily for service. Printed circuits are used
for improved reliability.
. Theft alarm extended to include roof panels along
with the current keylock control system which was
moved from left front fender to left-hand door lock
in mid-1977 model year.
. Larger rear shock absorbers with the opticnail
Gymkhana package for more effective wheel control.
. An optional AM/FM CB stereo radio with full 4¢
channels that uses a tri-band rear deck power antenna.
. Wiper and washer control has been moved from the
steering column stalk to the instrument panel. Turn
signal and headlight dimmer controls remain on the
steering column.
1978
Specifications Form
Passenger Car
Manutacturer | Car Line
CHEVROLET MOTOR DIVISION CORVETTE
GENERAL MOTORS CORPORATION
Mailing Address ER Modei Year Issueu:
CHEVROLET ENGINEERING CENT
30003 VAN DYKE 1978 October, 1977
WARREN, MICHIGAN February, 1978
' Pages Revised: 1,3,5,11,19,21,22,23,24,25,26,27,29.
The information contained herein ¡3 prepared. distribuled by, and is solely the responsibility of the automobile manufacturing company 10 whose products it retates Questions
developed by automobile manutactunng
concerning these specilications shouts be diracted lo the meanulacturer address is shown above This specihcaton form was
companies under the ausp.Cas of the Motor Vehicle Manufacturers Association of Me United States, inc
The General Specihcatons herein are those m affect at date 0 campiiation 146 art subrecl to change withou! nohos by the manulacturer
MVMA-C-7B
2, 3,4
6-10
10
11
12
13, 14
15 - 17
18 - 20
21
21, 22
MVMA Specifications Form
Passenger Car
Table Of Contents
Car Models
Car and Body Dimensions
Power Teams
Engine
Exhaust System
Fuel System :. —
Cooling System
Vehicle Emission Control
Electrical
Drive Units
Tires and Wheels
Brakes
Steering
Suspension — Front and Rear
Frame
Body — Miscellaneous Information
Convenience Equipment
Lamp Height and Spacing
Vehicle Weights
Optional Equipment Weights
Fiducial Marks
Car and Body Dimension Key Sheets
index
J
V
NOTES:
1. The General Specilications herein are those in effect at date
2. UNLESS OTHERWISE INDICATED:
a. Spacilications apply to standard models without optional equipment. Significant deviations are noted.
b. Nominal design dimensions are used throughout these specificabons.
£. All dimensions are in inches.
of compilation and are subject to change without notice by the manufacturer.
: MVMA Specifications Form Car Line Corvette
Passenger Car Model Year . 1978 _ issued 10+ Revised (e)
Ва
Car and Body Dimensions see Key Sheets, tor definitions. vo
All dimensions to ground ace for comparative purposes only. Dimensions ate to be shown for all base body models of each car ing,
SAE Ret No refers to the definition published in SAE Recommended Practice.
J1100a “Motor Vehicle Dimensions," unless otherwise specified.
Body Type
SAE
No. 2eDoor Sport Coupe
Width
Tread - Front
Treao - Rear
Yenicie wird! rn
Body width at Sq RP - front
Vetucie mundi - tront doors open
Vehicle width tea: doors open
Length
Wheelbase
Venicie length
Overnang - front
Overhang - rear
Upper structure length
Rear wheel CL "X" cootdinate
Cowl point “X coordinate
Height* ; J
Passenge: Distribdubion firontear) |PD1.23 2.0 ]
Trunk. Cargo load {lbs ) 0
Veticle height H101 48.0
Cowi pom! lo ground H114 36 а 4
Deck point to ground H138
Rocker T To ground H112 8.0
pane! "| From tront whee C/L
Botinm of door cinsed-tiont to grd.| H133 10.0
Rocker T 10 ground feia 72.6
pane! - From rear wheel C/L
Bottom ot door closed-rear to gro | +135 _ =_=
Windshield siope angle H122 57 N
Ground Clearance”
Fran bumper lo groung
Rear to
Bumper to gra - front © curb wt
Bumper to grd - rear € curb wt.
Angie of approach
Angle of departure
Ramp dbreakover angle
Rear axle d:fferental lo ground
Min running ground clearance
Locaton 91 run run gid clear.
“Al secta 0-19 nd ground clearances ale made at the manulacturers Design Load Wesgni. uniess otherwise specitied
AS Aa tea IQ ABC Wei es deíned win cheated passenger testhbuton and trunk/Cargo load
LAI Page 2
dl
F
(
VMA $ Car Line _ Corvette
MVMA Specifications Form Cor Le — 978 ea 10-77 Tea RAR
Passenger Car
Car Models
Model Description Make, Car line, Series, Body Type No. of Designated Seating Positions Max Trunk/Cargo Load
(Include Line Drawings {Mfgr's Mode! Code) (Front/Rear) (Pounds
of Vehicles, if Desired)
CORVETTE __ NUMBER FRONT
2
e 2-Door Sport Coupe 1YZ87
NOTE: Any specifications on the following pages that are specific to
California requirements are indicated accordingly.
zn Page
Min effective leg room
- - Liftover haight .
- Position of spare tre storage
x +
MVMA Specifications Form Car Line _ CORVETTE |
Passenger Car Mode! Year 1978 Issued_ 10-77 — Revised (6) — 2-78
Car And Body Dimensions see Key Sheets, Pgs. 30-33
Sody Type
~~ "2-DOOR SPORT COUPE
e
FER
Front Compartment
H Point to body “O” line
Effective head room
Effective T Point head room
Max. ef. leg room - accelerator
H Point to Heel point
H Point travel
Shoulder room
Hip room
Upper body opening to
Whee! Angle Vertical
Back Angle Front
Rear Compartment
H Point couple distance
Effective head room
ENective T Po:nt haad room
H Pont to Heel point
Min knee room
Hear Compartment room
Shoutder room
10 room
Upper body
to ground
Luggage Compartment
Usable luggage capacity. (Cu. ft.)
Vi
H195
Method of holding lid open
am A
af
_ Cargo length at front seal
MVMA Specifications Form Car Line Corvette
Passenger Car Model Year __ 1978 issued 10-77 — Revised(o)
Car And Body Dimensions See Key Sheets for dafinitions ‘
Body Type
SAE
Ne 2-Door Sport Coupe
Station Wagon — Third Seat
Shoulder Room WBS
Hip room - WB
Etective log oom — "77 "| 186 NOT
Effective head room 7 77°" 7 " 1°H86 APPLICABLE
Elective T Point head room H89 : 1
Seat facing direction 501
- Station Wagon — Cargo Space e -
Cargo length open - front
Cargo length - open - second
Carg length - closed - Ноги
Cargo iength - closed - second
al belt - tront
at bell - second
Cargo vadih - wheemouse
with at flgo:
width at bet
width apove beh
Rear
W204
W205
H201
H202
H250
Max rear
Cargo
Rear
Tai (curo wi.)
Front seat back 10 toad fioor hesght
Cargo v2ume mdex {cu fi)
Hidden cargo volume (cu ft)
tc
v2
va
Hatehback — Cargo Space
Front seat back 10 toad floor hesght H197
L208 NOT
Back
Cargo 'engin at floor - front
Cargo volume mdex icy ft.)
HIiOOe Cargo volume (cu ft)
L209
V3
v4
A printed or computer tape supplement containing additional car and body dimensions and/or drawings (based in part on SAE J110D0a “Motor Vehicie
Dimensions”) may be available from the manufacturer.
'MVMA Specifications Form Car Line — CORVETTE
Passenger Car Model Year _ 19/8 issued 10-77 __ Revised (e) __2/78
< Power Teams (incicate whether standard or optional)
SAL Net bhp {brake horsepower] and net torque corrected to 85* F and 29.38 in. Fig atmospheric pressure.
ENGINE (1)
AVAILABILITY Displ. | | Compr. | SAENGG RPM | Exaus TRANSMISSION (indicate a )
cu. in. " 1 Ratio BHP | Torque Systern* A B
Base - AN . $. 4-spd. Manual
350 |4-Bb1 185 |280 {2:20 low) - Base 3.36 - -
| УВ B.2:1| © e D N.A. in Calif.)
(Las) 000 | 2400
3-spd. Automatic
© ((Autd 350) - Opt.{ 3.080 - 3.55
Optional-A11 # | 350 |4-Bb1 4-spd. Manual
States except | V8 D | (2.64 low) - Base 3.70 3.36 -
California (L82) 220 1260
8.9:1| @ e 4-spd. Manual
5200 8600 (2.43 low) - Opt] 3.70 - -
3-spd. Automatic; .
© |(Auto 350) - Opt.| 3.55 - -
A Positraction standard equipment: for all axle ratios.
All ratios availlable{with [Air Conditipning,
# - 'Base' and |'Opti¢nal’ refer|to e gine availability.
A - Base all states. 1 qq
B - Optional bdlow 4000 Féet altitude.
С - Above 4000 Feet altitude 1 7
(*) Not avatlable in|Marylland, Floridh, Oregon. and Washington States;
Boston, Masks; Grand ids, [Michs;; and DesPlaÿnes, Barrington, ¡and
Cook Counties, Ill.
@ 3.55 axle ratio for Calif.
(1) California and altitudes above 4D00 feet:
Engine H.P. Torque
350 Cu. In. (RPO|LAS) 17503800 2656240 `0
*S — Single D — Dual
. . Number of
ee ae r Line — Corvette
MVMA Specifications Form Car L 1978
Passenger Car Model Year issued 10-77 — Revised (e)
Engine Description/Car.
V8-350 Cu. In./4-Bbl _ ;
RPO L48 | КРО 182 ||
Engine — General
Type (nine. V, Flat)
TH: Mesa
No. of cywders
Bore
Stroke
Preston Displacement cu. E.
Bore {CA to CA)
Cyi No system L Bank
(hor 10 seal) R Bank
wl oH
Fang Order
Cyunger Head Materna!
Cylnder Block Material
Cynder block deck hesght
oT Front
mig pois Rear
msiadation angle
Recommended fue!
feaded. unleaded
Unleaded
he
fue! antknock index \
(R+M) À
Cyuncer read Volume
Head Gaskel Thickness
{Compressed} C*A°RV2
Head Gasket Volume
Deck Ciearance (minimum)
{above o: below block)
‚921
.025 below
Minimum Combustion
Chamber Volume (cm?)
74.47 75.18
Engine — Pistons
Material _ Cast Aluminum Alloy Aluminum impact extruded
Description and finish Sump head; Flat head;
- closed slipper skirt notched, slipper skirt
Weight {piston only} OZ. 21.32 , oo In 38 _—_
с Top land „40235 = 0017 —.. : 0305 ~ „0395 —
mats) EL: „0007 - .0017 0046 =..0056
Bottom
No tring | 3.541 - 3.556 3.546 - 3.556
Ping groove | No 2009 | 3.54) - 3.556 3,546 - 3,556
No. 3 ring 3.577 - 3.592 3,582 - 3,592
*Dressed engine weight includes the following: , 2
Material required to make the engine an independent working power unit less radiato:
hoses, coolant, accelerator controls or engine mountings.
=
-
MVMA Specifications Form Car Line — 5 НЕЕ 10:77 |
Passenger Car Mode! Year Issued _ 22 Revised (@)
| Engine Displacement
С Lo | Vo- 350 CID
RPO L48 | RPO L82
Engine - Piston Rings
Function | No.1. oil or comp. Compression
(plo | No 7. oil or comp. Compress1on
No. 3. oil or comp. 011
Description - Upper Last alloy iron, inside bevel, tapered face, chrome flash.Moly Channel
material. Costing. - for L 82. ‚ ‚
Compres- | exc. Lower | Cast alloy iron, reverse twist, tapered face, lubrited __
width _ Upper - .0/75 - .0780; Lwr - .0770 - .0775 { Upr & Lwr - .0770 -.0775
Gap - Upper - .010 - .020; Lower - .013 -.025
Description - Multi-piece (2 rails and 1 spacer expander)
о. meena Coming. Rails - steel, chrome plated 0D; Expander - stainless steel
of |
Wiam „1850 - .1870
Gap 015 - ‚055
Expanders In oil ring assembly
Engine - Piston Pins
Materia! rom1um S
Diamater
Locked in rod. in
prston, floating. etc.
ln rod or piston
Materia!
Locked in rod
~ Type
Bushing
in piston
In rod
Direction & amount offset in piston
Clearance
Engine - Connecting Rods |
Materia!
Drop forged steel
(oz.)
(center to center)
Material & Type Premium Aluminum
Overall
Clearance (limits)
Enc Play
+
MVMA Specifications Form Car Line CORVETTE “e
Passenger Car Model Year — 1978 Isssed_ ____Pevisea(e)
Engine Displacement
v8 - 350 CID /4-Bbl
RPO L48 | RPO LB2
Engine—Crankshaft a
Matera)
Vibraton damper type Rubber mounted inertía
2
Eng thnust taken
Crankenatt end
(No)
Material & type
Premium Aluminum (*)
Clearance
=
+
No. 1
No. 2
Ne 3
No 4
No. 5
No. 6
No. 7
Ou & amt. cyl. oftset
No bolts/mamn cap
Crankpin journal diameter
Engine—Camshaft
Location
Journal
cha. ang
besring
Overall
length
Main
bearing
Material
Cast all
Material
Number
Gear or chain
Crankshaft! gear or
sprockel material —-
Camshah gear or
sprocket matenal
No of links
woth
Pitch
Bearings
ain
Sintered iron
lon teeth with aluminum h
Trung
chain
* = M400 # 1,2,3, & 4,
M100 #5 Upper
MI00 #5 Lower with man. trans.
MA00 #5 Lower with Auto trans.
MVMA-40A-76 Page 8
MVMA Specifications Form Car Line __CORVETTE
Passenger Car Model Year _ 1378 issued __10277 _ Rewsed (e)
Engine Displacement
| V8 - 350 CID /4-Bb]
- RPO L48 RPO L82
Engine—Valve System
Hydraulic hfters (Sto . opt.. NA) Standard
Valve rotator. type
(take. exhaust) Exhaust
Push rods (dia. length, material) „3175 Xx 7.72 steel welding tubing] .3120 x 7.72 stl. welding tubing (A)
Hocker ratio 1.50: 1
tappet "0 une Zero
-clegrance
(indicate hot :
or cold) Exhaust Zero
“| Opens ("ВТС) 28 52
Turing intake | Closes (ABC) HE 114
(Based on Duration (deg ) — 280 . 346
ramp Opens ("88C) 78 nn 98
ports) Exhaust | Closes CATC) 30 62
Duration (deg ) 288 340
Valve open overlap (deg ) 58 114
Material Alloy steel
Overall length 4.870 - 4.889
Actual overall head dia 1.935 «1.945 2.017 - 2.023
Angle ot sea! & face (deg) 46 seat, 45 face
Sea! insert material None
Stem diameter . 3810 - .3417
Stern to Quide ciearance ‚0010 - ‚0027
intare Lift (G zero lash) . 3900 | „4500
Outer | Valve closed 76 - 8401.70
spring (1b. € in.)
press. &
engin | | Valve сое 180 - 188e1.25 196 - 204€1.25
poll mr Spring damper
length & Valve open
(6 @ т) Spring damper
Material High alloy steel, atuminized head (b) _
Overall feng 4.910 - 4.930 | 4.891 - 4.910
Actuel overall head dia 1895 = 1.505 | 1.595 - 1.605
Angle of seat & face (deg ) 4b Seat, 45 tace
Seat insert material None
Stem diameter «3410 - .341/
Stern to guide clearance ‚0010 = ‚0027
Lift (6 zero lash) 2100 4600
Outer | Hive closed 76 -8401.61 6 - 8401.70
spring (m. E mM)
tng | Valve open 186 - 19401.16 197 - 2101.25
Valve ciosed |
men | e En) Spring damper
press & ae open :
e Spring damper
(a) Steel insert on rocker arm end.
chrome stem.
(b) RPO L48 - chrome flash stem; RPO L82 - full
MVMA Specifications Form
Passenger Car
Mode! Year 1978 — issued _10-77 -— Revisea -
Engine Description/Carb.
ео 350 С10 \8/4-8В1
RPO L48 | RPO L82
Engine — Lubrication System
Main bearings Press ure
Type ol Connecung rods Pressure
tubrica. | Piston pins Splash
tosh, | Camshaft bearings | Pressure
pressure, Teppets Pressure _
Timing gear or chain С 1 ring
Cylinder walls Pressure jet cross sprayed
Oil pump type bear
Normal oil pressure (ib @ engine rpm) 324082000
Type ort-intake {fioating. stationary) Stationary_
Oit filter system (full flow, part.. other) Full Flow
Capacity of c/case, less titer-refil! (qt)
Oil grade recommended (SAE viscosity
and temperature range)
Engine service regmi. (SD. SE, etc.)
Engine — Exhaust system
Type (single. single with cross-over,
gual. other)
0° =20°F -
SE
pual, single converter with crossover
4.0
20°F and above - 20W-20, 10W-30, 108-30, ‚ 204-40, 206-303
Multier No & type (reverse flow,
straight thru, separate resonator)
Two, reverse flow
/
Resonator No. & type None
Branch O. D.. wall thickness 2 00 x .071
Proust Main O. D.. wall thickness 2 EN x 071
Material Stainless steel tubing - laminated
inter- . O. D. 4 wall thickness 2 285 x 072
Poe Material Stai ing -
Tail OD & wel thickness 2.25 х „062
Pipe [Materal Welded or seamless steel tubing. —
MVMA-C-78 Page 10
| CORVETTE
MVMA Specifications Form Car Line
Passenger Car Model Year __ 1978 issued 10077 Revised (0) — 2/78
Co Engine Displacement
« V8 - 350 C1D/4-bb1
RPO L48 | RPO_182
Engine — Fuel System (See supplemental page for Details of Fue! injection, Supercharger. sic. if used)
induction type: Carburetor, fuel
njechon supercharger
Retilt capacity (U. S.
Filler location
Type (elec. or mech.)
Locations
Pressure
Vacuum booster (Std... aptionat. none)
Type
Locations
Choke type
Intake manifold heat comrol
(exhaust or water}
Fuel
Tank
Fuel
Pump
Fuel
Fiiter
Carbure- Aut cleaner Standarg
‘уре Optional
speed Manual
® (spec neutral
or Automate
idie A/F mux.
Carburetor Supplementary Information
. Mode! Usage Piston Transmission are obra Model (a) and Type se
Manual 17058203
350
All (L48) Rochester One; 1.38 Pri.
4-8b1 2.25 Sec.
Automatic 17058202
(17058502)
Manual 17058211
350 Rochester One; 1.38 Pri.
[L82) 4-Bb] 2.25 Sec.
Automatic 17058210
(a) Data bracketed ( ) (are specific to California. |
*e Single snorkel on 148,
taa Paga 11
MVMA Specifications Form
Car Line __Согуе те
Model Year 1878
] 0 77 vi
Passenger Car Issued 377 Revised (9)
a
— Engine Description/Carb.
Ш Ш | | 350 CID Y8/4-BB]
a | RPO L48 RPO L82
Engine — Cooling System
Coolant recovery system
(std.. opt. none) Standard
Radiator cap rebel waive pressure — 15 PSI
Gircula- | Type (choke. bypass) Choke
themostar | Siarts to openat — _ (7) 192-198
| Type (cortrituga!, citer) Centrifugal
Water” GPM 1000 pump rpm 22.7
pump Number of pumps : | — One :
Drive (V-belt. other) Y -be] t
Bearing type P icated doub w ball
. By-pass recirculation type (inter. ext) ; Internal ;
_ Radıator core type (crass-flow. | -
vertical. celiular. tube and fín, other) Cross flow, tube 4 center .
-Coohng | With heater (ql) 21.6
system Without heater (at.) |
[Opt equipment-specity (at)
Water jackets full tength of cyl (yes. no) Yes
. Water ait around cybnder (yes. no) Yes
Number and type
(molded, straight) One, molded | 2
- a - Lower a
Inside diameter 1.75
Numbers and type
Radiator | upper (molded, straight) One, molded
NS inside diameter 1.50
Number and type N
i n
_ | Bypass [molded sre gh 0 | e
Inside diameter - =
| Width 26.3
НЫ У - Standard | Height 16.97 .
о” Thickness 1.96 2.68
With 20.
Radator | MC | Hen 16.97
Thickness 1 = 96 2 + 68
нев [Vi 26.3 None
ary | Heicht 16.97 _—
Number of blades 4 spacing 5
Fan | ameter 17 . 5 a
(Standard Ratic-fan to crankshaft rev. _ ‚ 949: 1 >
Fan cutout type Thermo-modulated viscous clutch `
No of blades and spacing 7 ae
Fan Dameter 18.5
Optonalt Rato - fan 10 crankshaft rev. „949: 1
Fan cut-aut type Ihermo-mocdulated viscous clutch
С
MVMA Specifications Form
Passenger Car
Vehicle Emission Control
Type (Air injection. engine
modifications. other)
Displacement
Drive ratio
type
“| Raliet vaive (type)
Filter (describe)
Air distributron
{head. manifold. etc.)
Point of entry
injection tube d.
Check valve type
protection
Type (controlled flow.
open orifice, other)
Vaive type
Vaive location
Control energy source
Exhaust
Emission
Control
Exhaust
Gas
Recirculation
System
Exhaust source
Exhaust cooler type
Oritice no. and size
Pot of exhaust imyéction
(spacer, carburetor,
manifold, other)
Catalyst Volume
Substrate
Container location
| CORVETTE
Car Line
Model Year __1978 issued 10=77 __ Revised (e)
Engine Displacement
[V8-350 (RPO L48)
RPO L48 - 49 states above
4000 ft.& California
Calif.
A11 states except Calif.
ne modifications
Manifold Air
COMBUSTION
Controlled Flow
Vacuum a $
r manifo
cuum
us
-0
crossover
Inlet Manifold
atinum -
cu. 1n.
MVMA Specifications Form
Passenger Car
я ба -
a Be
Car Line CORVETTE
Mode! Year 1978
issued VV U-71 —.—. Revised (e)
Engine Displacement
LE [ГОРО Las
V8 - 350 CID /4-bbl.
| RPO L82
Vehicle Emission Controt (Continued)
“Induction system -
Type (ventilates to atmos.. Standard
induction system, other) Optional = = = —
Mais and mode! AC Spark Plug
. {Location — Left front rocker cover
- Control 8 Energy asuros (manitold
Crankcase | UN. enmaniciatureo other) Manifold vacuum
Control — "4 Control method (variable o
*- Y orífice. fed orttice. other) Variable orifice
Discharges (to intakæ
Complete | manifold, other) | ° ТпФаке manifold
System Air init (breather cap. other) Carburetor Air Inlet an
Fiame arrestor (screen, other) screen —
retomo (0) Approximately 10% of refill capacity
(pa) anc locaton | 1.1 PSI —
Fuel | (bs) and location 0.7 PSI
Tank - Vapor-liquid :
separator type ‘Integral with fuel tank
Vapor vented to Canister
Evaporative (crankcase. —
Emission canister, other)
Control -..
Carbu- Vapor vended to
crankcase,
retor ine other) - - -
Storage provision Canister
{crankcase. ,
canister, other)
- Vapor ` - = =
| Swrage Volume (cu. E.) or | . о .
capacity (grams) ~~ Approximately 50 grams storage capacity
Control veive — Controlled by orífices and carburetor throttle
type body and throttle blade position.
MVMA-40A-76 Page 14
Lr
Motor
MVMA Specifications Form Car Line CORVETTE
Passenger Car Model Year 1978 issued _10-77 Revised (e)
Engine Deseription/Cer.
35 - ]
RPO L48 RPO L82
Electrical — Supply System
Make and Model
Voitage Rig & Tota) Plates
SAE Desigration No.
and/or capacity ———
co
Battery 100 minutes
Las
Location — -
Ins
Make
Model
Type and rating
Output at engine idie (neutral)
Rano—Gen. to Cr/s rev.
Make
Моде!
Туре
Regu-
lated
Generator
or
Alternator
Regulator
Voltage
Current
Temperature
Load
Other
Voltage
test
conde
tons
Electrical — Starting System
Make
Mode!
Starting
Motor
SOIeno
Drive
MVMA Specifications Form Car Line CORVETTE
r ] 9 8 — и = vi —
Passenger Car Model Yes Issuec__ 10-77 __ Revised (e)
>
- /
Engine
. Description/Car. - . 350 CID VB/4-Barrei
: RPO L48 RPO 182
Electrical — ignition System — Distributor о
Manual -— 1103337 | 1103291
Distributor 1 — 1103353 —
| Automatic (1103285) 1103291
Mania! 6 12
Timing
” Automatic ; e ) 12
| CENTRIFUGAL ADVANCE . VACUUM ADVANCE
| Distributor Crankshaft Degrees at Engine RPM Crankshaft Deg. at in. of Mercury
Model 7
| Start internediate Maximum Start Maximum
| 1103285 { 01200 1282000 2284200 084 1088 J
1103291 081200 1301600 1682000 004 1088
1103337 081100 1201600 2204600 004 24010
1103353 081100 1281600 2284600 0e4 20810
Data in brackets ( ) are specific to the
State of Califor
mia,
Fama YE
CORVETTE
Recifications Form Car Line
Car Model Year —_ 1978 tssued_ 10-77 Revised (®)
cription/Carb i
350 CID V8/4-bb1, |
RPO 148 RPO L82 |
Electrical—Ignition System
Conventional - Sd.. Opt.. N.A. - = =
Type Transistorized - Sid.. Opt.. N. A. : = = =
Other (specity) High Energy Ignition System (H.E.I.)
Make Delco Remy
Coil Mode! = Integral with distributor cap
ing topped - e .
current [Engine idling oe
Make ” a
Model 5TS _
pha Thread (mm) Ro
Tightening torque (ib. 11) 25
Gap 045
Electrical—Suppression
Locations & type Non-metallic high tension ignition cabels.
Electrical—instruments and Equipment
Speed. |Type Circular dial with pointer,
ometer Trip odometer (std. opt.. №. А.) Standa rd
EGR maimenance indicator NA
Indicator Waming divice _ NA
Temperature — | Type Electric Gauge
indicator Waming device NA
Oil pressure Type Electric
indicator Warning device NA
Fue! Type =. Electric Gauge __
Indicator Warning device — Low fuel indicator optional.
Type - standard Electric, two speed
win Type - optional Puls
Wiper Blade length 16.0 inch
Swept area 667.0
Wi: Type - standard Pushbutton-manual
eld ype - optional None
Washer Fivid level indicator NA
Type Vibrator
Hom Number used 2
Current draw (A) per hom 4,5-6,5 @ 12.5 Volts
Other Tachometer/anti-theft alarms; parking brake warning light and
brake failure warning lights; restraint system warning light
—_ and-buzzer.,
MVMA Specifications Form Car Line _ CORVETTE 10777 =.
Passenger Car Mode! Year RE: issued _. "E > Revised (e)
Engine Deccription/Cart.
350 CID V8/4-Barrel
7 RPO 148 | RPO L82
Drive Units—Clutch (Manual Transmission)
Make & type Chevrolet, single dry disc
| Type pressure plate springs Circular plate diaphragm, bent finger design — Ш
Tota! spring load (15.) 2100-2300 _. 2450-2750
No. of clutch driven discs , о Опе
Materia) Woven type asbestos
Manulaciurer Chevrolet
Part Number 3682736
Rivets/Plate *
Clutch Rive! size „184 Хх. 208 |
| вето Outside & inside dia. 10.34 X 6.50 1 11.0 x 6.50
Total ett. area (sq. in) 101.6 | | 123.70
Thickness . 140
E e i
mo nod cushion Flat spring steel between friction rings
Y
cer Hotte Single row ball, packed and sealed
ae | chon matorat Coil springs
Drive Units—Transmissions a. | | >
Manual 3-speed (std. opt, N.A.) N.A.
Manual 4-speed (std., opt . N.A.) Standard
Marnai 5-speed {sid.… cot.. NA.) N.A,
Manual Overdeve (std. opt. NA.) N.À.
Automatic (sid . opt., М.А.) Opti onal
Drive Units — Manual Trans.
Number of forward speeds 4-close ratio
tn first
In second
in third
in fourth
in НИЛ
in reverse
Syncivonous meshing, specify pears
Transmis-
sion raltos
Shift tever location Floor mounted in console
Capacity (pt)
Type recommended
Summer
Winter
Extreme cold
SAE vis-
cosity
number
MVMA-C-78 Page 16
. MVMA Specifications Form Car Line _ Corvette — |
Passenger Car Model vear 1978 issued TA-77 Revisea(e) _ 2/78
Engine Displacement
( V8-350 CID /4-bbl.
RPO Las | RPO L82
Drive Units—Automatic Transmission
Trade name
Type (describe)
3-Speed torque converter
Selector location Lever (floormounted in console)
o .93
+ —
Gear
Ratios
Max upshift speed - drive range
Max riCkdown speed - drive
Number of elements
Max ratio at stall
Type ot cooling (air. liquid)
Nomina! diameter
Torque
Converter
Capacity - refill {pt.)
Type recommended
Sneciat transmission
a features
Drive Units—Axle
Type tTront. rear)
Lubricant
Description
Overhung pinion gear Li slip differential
Limited Sup differential. type
Drive Pinion Offset
No of diflerential pmions
Pimon adjustment (shim. other)
Pimon bearing ad; (shim. ather)
Whee! type
Capacity (р!)
Type recommended
Summer
Winter
Extreme cold
Lubricant
SAE vis-
Cosity
number
80W-90
Axle Ratio Tooth Combinations (Sec “Power Teams" tor axle ratio usage)
3.08 3.36
Axte ratio
3.70
No of Amon
teeth Ring gear
Ring Gear O D
MVMA-LCA-76 Page 19
CORVETTE
MVMA Specifications Form SL TETE issues 10-71 moved co
Passenger Car Model Year — E75 8866 VE
Engine Description/Curb.
350 CID V8/4-Barrel
RPO L48 RPO L82
Drive Units—Propelier Shaft
Number used One
Type (straight tube, tube-intube.
intemal-extemal damper, etc.) Straight Tube
Manual 3-speed trans. N.A.
Outer Manual 4-speed trans. 2.5 x 29.50 x 0.083
length” x
wall
тн ск .
hess Marg! 5 speed tans. N.A.
Overdrwe N.A.
Automatic transmission 2.5 x 29.81 x 0.083
Type (piain,
me ale anti-friction) None
bearing Lubrication (fitting,
prepack) -s =
Type Yoke
ho Number of teeth 32
Spline O. D. 1 175
Make and Mig. No. Chevrolet
Number used Two
! | Туре (ball and trunnion, cross) Cross
joints Reat attach. (u-bolt, clamp, etc.) Strap and bolt
Type (plain,
Bearing anti-triction) Anti-friction
Lubric. (fitting,
prepack) Pre-pack
Drive taken through (torque tube
or arms. springs) Torque control arms
Torque taken through (torque tube
or arms. springs) Torque control arms
“Center to center of universal joints, or to centerline of rear attachment.
Ps A
т - ar
MVMA Specifications Form Car Line _ Corvette
Passenger Car Model Year _ 1978 . Issued.. 10 =71 _— Revised (6) —2= "IE
Body Type And/Or Engine Displacement, Etc,
( e 2-DOOR SPORT COUPE
Drive Units — Tires And Wheels (Standard)
load range. ply
ype (bias. radial, ec.)
opt.)
pressure (cold) | Front
tor
TIRES
recommended
max. vehicle Rear
Rev ¡mile E 45 mph
Туре & materia!
Aim (size 6 tlange type)
Whee! offset
Type (bolt or stud)
Circle diameter
Number & size
Spare wheel! (same or other)
WHEELS
Atachment
Drive Units — Tires And Wheels (Optional)
Size load range.
Type (bias. radrai, été )
Vitbeel type & material
Rim (size. flange type, and offset)
S.ze. cad range. py” e+d
Type (Dias. radial, etc)
Wheel type & material
Rm (size. lange type. and ofisel)
DN
Suze. toad range. ply
Type (bias. radial. etc )
Wheel type & material
Вст (size. flange type. and oftset)
Size, load range. ply
Type (días. racha!. etc.)
Wee! type 6 materia!
Rm (maze. flange type. and offset)
Suze. load range. ply
Type [bias. radial. etc.)
Whee! type & matenal
(mize. type. ang offset)
Brakes — Parking
Type of control
Location ot control
Operates on
Type {internal or external)
Drum diameter
Ling size (length x
| width x thickness)
E sepa-
rate trom
Service
wakes
6.78x1.25x0.175
MVMA-404-76 Page 21
MVMA Specifications Form Car Line _ Corvette
Passenger Car Mode! Year _ 1978 issued 10-77. — Revsea(e) _2=78 —
Body Type And/Or Engine Displacement В
® 2-DOOR SPORT COUPE |
Brakes — Service
Drum
Rear
Front
Risa:
Brake Type
{s10.. opt. NA}
Disc
Sei
Special
Valving
{std.. opt.. NLA)
Type (proportion. delay,
metering. ofvvar)
Power Brake (std.. opt, N.A.)
Booster Type (remote,
Etfective area (sq in)"
Metering
etc.)
Gross hning area (50. ın.} =>
Swept area (sq 1.) e
Diameter
(nominal)
Front
Drum Rear
Type and materia!
Outer diameter
inner woriung diamaler
Thickness
Material € type (vented/solid)
Front
Rear
Bore
Stroke
Pedal arc ratio
Line pressure at 100 Id. pedal load
Snoe Front
Ciearance Rear
Whee! Cyl-
inder bore
Master
Cylinder
Anti-skid device type (sid.. opt.. N.A.)
or rveted, nvets'seg.
Rivet size
Manufacturer
Part number
Material
or
Out-
board
Size
(length x
with x
thickness) Or in-
board
Segments per shoe
Shoe thickness
Matenal
Brake
hining
or
Size out-
(length x | board
with x
thickness) Second,
ОР
board
per shoe
Shoe tfucikness
Exciudes nvet holes. grooves. chamiers. etc.
** includes nvel holes, grooves, chamiers, etc.
wes Total swept area for tour brakes. (Drum Drake: Widest lining COMact width for each brake x its contact circumterence.) (Disc brake: Square of Outer Working Dia. “aires
squate of inner Working Dia. multiptied by7/2 tor each brake.)
MVMA-404-76 Page 2?
“%
"MVMA Specifications Form Car Line —
*
CORVETTE
Passenger Car Model Year . 1978 issued __ 10-77 Revised (eo) 2-78 _—
e 2-DOOR SPORT COUPE
Steering
Manual (sta opt. NA)
Power (Id ор!. МА) -
sieenng wheel ei Tiit and telescope steering wheel; 2" adjustment
(UI. SWINQ. other)
(etc, opt, МА)
Manual
Whee: diameter
Power
Outsige | Wall to wall (!. & г.)
Turning tront Curb 10 curb (1. 4 r)
d.ameter
(ee ‚ие Wall to wall (I. & r.)
reat Curb to curb (1 & 6.)
Type
Make
Мага! Gear
Overall
No wheel turns (stop to stop)
Type (Coaxial. hinkage, etc.)
Make
Type
Power Gear Gear
Overall
Pump driven by
No wheei turns (stop to stop)
Type
Location {front or rear
Linkage of wheels, other)
Drag link (trans. or longit.)
Tie rods (one or two)
Inclinanon at camber (deg)
Steermg Upper
Axis Ces Lower
Thrust
wnt Align | Caster (deg.)
сыт wi 4 | Camber (oeg)
preferred) | Toe. (outsioe track inches)
Steenng spindle & joint type
taner bearing
Wheel Outer
Spingie Thread size
Bearng type
Caster (deg )
Diameter
Servce
checking
Toe-n (outside)
Caster
Service
reset Camber
1
Toe-m
Penooc | Caster
MV
gnment: Camber - 0.874 + ¥%; Toe-in - 0+1/32
MVMA Specifications F
Passenger Car
orm Car Line _ Corvette
Model Year 1978 issued. 10-77 Revised (6) 2-78
Body Type And/Or Engine Displacement —,
o 2-DOOR SPORT COUPE |
Suspension - General {See Supplement page for details on Air Suspension)
Provision for car leveling “Front stabilizer shaft —
Provision for brake dip control Mounting angle at front upper control arm
Provision for acc. squat control None
Special provisions for Front - 5" forward of front door opening, under frame
car jacking Rear - 3" fo 1
Shock | Туре Direct double acting hydraulic
front & Make _Delco
roar Piston dia. 1.0 (a)
Other spacial features
Suspension — Front
Type and description Independent, SLA with coil springs
| Full Jounce 4.70
Travel Fui Rebound 2.94
Type (coil, leat, other) Coil
Matoriot Steel alloy
Spring demon nen £10. 10.49x3.80; 133.83x.609(a)
Spring rate (Ib. per in.) 295 (a) )
Rate at wheel (Ib. per in.) 117.6(a) LL
Type (link, linkless,
siapilizer | frametess) Link —
Material & bar diameter HR steel - 0. 875 3 Opti onal -RPOFE7-1. 12
Suspension — Rear
où Full independent with fixed differential; transverse
Type and description bu ti-leaf spring, lateral struts & universally jointed axle shafts
Drive and torque taken through À Torque control arms
Fuil Jounce 3.70
Travel .
Ful! Rebound 2 + 80
Type (coil. leat, other) Multi-leaf
Material Chrome carbon steel
Size (length x width, coil design
{ogre 8 15. bar teogm & dia) 48. 60х2, 50
Spring [spring rate (ib. per in) 198 (a)
Rate at wheel (Ib. per in.) 151.4 (a)
Mounting insulation type i i
H No. of leaves 10
leat | Shackle (comp. or tens.) Tension
Stabilizer [PC (tré knkiess. fremeless) Link (RPO FE7 Gymkhana_Suspensiop only}
| Material & bar diameter HR steel; 0.440" |
Track bar type None -
-(a) For base equipped model, springs are computer selected by size and rate accordip:
to vehicle weight in
cluding optional equipment. Spring rates and shock absorber
equipment may vary when engine, transmission or gymkhanz suspension options are
used,
MVMA-40DA-76
Page 24
(
MVMA Specifications Form Car Line Corvette |
Passenger Car Model Year _ 1978 issued_ 10-77 Revised(e)— 2-78
Body Type
e 2-DOOR SPORT COUPE
Frame
Type and description (Separate frame, All welded, full length, ladder
unitized frame. partally - unitized frame) constructed frame with (5) crossmember
Body — Miscellaneous information
o! fimgh (tacquer, enamel. other)
Hood counterbalanced (yes. no)
Fricog release Control (interna!. external)
venicle ingent No location
Left hand windshield pillar
on steering column;
Thett protection - type
Vent window contro! method | Front
(crank. friction pivot, power) | Rear
Front
Rear
Sea! cushion type
Seat back type
Curved = laminated plate-tinted
Windshield glass type
Curved - laminated plate-tinted
Side glass type
Curved - tempered plate - tinted
Backhght glass type
Wingshueld exposed surface area
Side glass exposed surace area
Backlight glass exposed surface area
Total axpOsed surtace area
@ Anti-theft alarm under hood signals tampering with doors,
hood and 1ift-out roof panels, Drivers door key lock arms
or disarms alarm system,
-—
MVMA Specifications Form Car Line _ Corvette
Passenger Car Model Year _1978 Issues 10-77. Revised (e) 2-70:
Body Type >
e 2-DOOR SPORT COUPE |
|
Convenience Equipment -
Side windows
windows
Backlight or tailgate
Powet saats (specify type as
well a3 availability)
front seat back (AL or bath)
Radios (specify type as
well as availability) — =
Rear seat speaker
Power antenna
Clock
Air conditioner (specity type
snd availability)
Speed warning device
Speed control device
tock lamp
Dome lamp
Giove compartment lamp
Luggage companment lamp
Lindernood lamp
Counesy lamp
Map ¡amp
Cornenng hight tamp
Hear window Gétrosier
elecincally haated
Rear window
Power
windows
NA
stereophonic, AM/FM stereo-CB,
onal-four-season (Manual Control
NA
ssion Models Only
Optional
Lamp Height And Spacing’
Headlamp
{H125)
Lowest
Highest
Lowest
Height above
ground to
center of bulb
OF marker
Tail
(H126)
Sidemarker
Headlamp -
Outside"
Distance from
CA oi car to
Center of bulb
Teil
Outside
Front
Fear
Directiona!
“Measured with passenger load and trunk/cargo load specified in Car and Body Dimension section. >
**1t single headlamps are used enter here.
MVMA-40A-76 Page 26
a „=
МУМА Specifications Form Cariine . Corvette _ _____.. a een e
Passenger Car Model Year 1978 __ issued .. 10-77 _ Revised (e)
Vehicle Weights
* (Pounds) a PASS. WEIGHT DISTRIBUTION
> we > SHIPPING WEIGHT **
att. In Front ass th Fear (Poun ds)
Front - Rear Front Raar
Rear Total
875
= Reterence - SAE J1100. Passenger Car Dimension Detmitions. Pg 1, Base Curb Werght
=» Srppng we:gnt Detinhipn -
tie Pame 27
MVMA Specifications Form Car Line _ Corvette
Passenger Car Mode! Year 1978 issued _ 10-77 . Revised (0)
Optional Equipment Weights
WEIGHT (Pounds)
Equipment Ditterentia! Weights ns -
MVMA-204-76 Page 28
~
icati Car Line CORVETTE
ene: Car On Form Model Year — 1978 _ issued 10-77 Revised (e) _ 2-78
( Вобу Туре
2-DOOR SPORT COUPE
Vehicle Fiducial Marks
Fidutiai Mark
Number * Defina Coordinate Location
ep у
X = FIDUCIAL MARK TO VERTICAL BODY ZERO LINE-FRONT, MEASURED HORIZONTALLY
Fron FROM THE BODY ZERO LINE TO THE FRONT FIDUCIAL MARK LOCATED ON TOP
OF THE FRONT SEAT ADJUSTER MOUNTING BOLT.
Y - FIDUCIAL MARK TO CENTERLINE OF CAR-FRONT, WIDTH MEASUREMENT MADE FROM
CENTERLINE OF CAR TO FIDUCIAL MARK LOCATED ON TOP OF THE FRONT SEAT
ADJUSTER MOUNTING BOLT.
7 - FIDUCIAL MARK TO HORIZONTAL BODY ZERO LINE-FRONT, MEASURED VERTICALLY
FROM BODY ZERO LINE TO FRONT FIDUCIAL MARK LOCATED ON TOP OF THE
FRONT SEAT ADJUSTER MOUNTING BOLT.
X - FIDUCIAL MARK TO VERTICAL BODY ZERO LINE-REAR, MEASURED HORIZONTALLY
FROM BODY ZERO LINE TO THE REAR FIDUCIAL MARK LOCATED ON REAR
Rear UNDERBODY CROSSBAR.
( Y - FIDUCIAL MARK TO CENTERLINE OF CAR-REAR, WIDTH MEASUREMENT MADE FROM
CENTERLINE OF CAR TO FIDUCIAL MARK LOCATED ON THE REAR UNDERBODY
CROSSBAR.
7 - FIDUCIAL MARK TO HORIZONTAL BODY ZERO LINE-REAR, MEASURED VERTICALLY
FROM BODY ZERO LINE TO THE REAR FIDUCIAL MARK LOCATED ON REAR
UNDERBODY CROSSBAR.
Feducial Fiducia! Mark
Mark Coordinate Location of to Ground
Number Fiducial Mark at Curb
X y A
con 30.95 27.02 1.88 260 (10.2 in)
88.18 24.14 12.37 523 (20.6 in)
Rear
*Meterence - SAE Recommended Practice J1 82. A Motor Vehicte Fiducial Marks - September 1973
ai
MVMA Specifications Form
Passenger Car
Exterior Car And Body Dimensions — Key Sheet
т
W103
Length & Height
Vertical Zero Line —————
wig OT Dash
~~ 1%
, ) H138
H125 | LC o E.
$ ! H133] H135
| Hi12 H111
LIZ7 ——
Lu
L101 -
L103
Interior Car And Body Dimensions — Key Sheet
zo
Width
Vertical Zero Line —
Station Wagon
MYMA-40A-76
Page 30
7
+}
MVMA Specifications Form
Passenger Car
Exterior Car And Body Dimensions — Key Sheet
Dimension Definitions
Width Dimensions
W101
W102
W103
W117
w120
W121
- El ground.
WHEEL TREAD — FRONT. Measured at centerline of tires,
with nominal camber, at ground.
WHEEL TREAD — REAR. Measured al centeriine of tires
сочи п,
MAXIMUM OVERALL CAR WIDTH. include bumpers, moid-
ings, or sheet metal protrusions. Measured to outside of
metal. ~ . ,
MAXIMUM BODY WIDTH AT NO. 2 PILLAR. Measured
across body at No. 2 pillar, exciuding hardware and applied
moldings. Г
MAXIMUM OVERALL CAR WIDTH, FRONT DOORS OPEN
is measured to outside of sheet metal with front doors in
maximum hold-open position.
MAXIMUM OVERALL CAR WIDTH, REAR DOORS OPEN
is measured in same manner as W120.
Length Dimensions
130
L101
L103
L104
1105
L123
L127
L125
VERTICAL ZERO LINE TO ACTUAL FRONT OF DASH. i
actual Front of Dash is to the rear of Body Zero Line, it
is identified by a minus (—) sign.
WHEELBASE.
OVERALL LENGTH. include bumper guards if standard
equipment.
OVERHANG — FRONT. Measured from C/L of front wheels
to front of car. including bumper guards if standard equip-
ment.
OVERHANG — REAR. Measured from C/L of rear wheels
to rear of car, including bumper guards if standard equip-
ment. . .
BODY UPPER STRUCTURE LENGTH AT CAR
CENTERLINE. The horizontal dimension from the Cowi Point
to the Deck Point. ;
VERTICAL ZERO LINE TO CENTERLINE OF REAR WHEELS.
A horizontal dimension. а
VERTICAL ZERO LINE TO WINDSHIELD COWL POINT. The
horizontal dimension from the vertical zero line to the
theoretical intersection of extended windshield glass plane
and normal cowl surface.
Height Dimensions
H101
H114
H138
OVERALL HEIGHT — DESIGN. Measured with the vehicle
in Manufacturer's Design Weight attitude.
COWL POINT TO GROUND. Measured at vehicle center-
line.
DECK POINT TO GROUND. Measured at vehicle centerline.
H112
H133
H111
H135
M122
H125
H126
ROCKER PANEL TO GROUND — FRONT. The vertical
dimension from ground to bottom of rocker panel, excluding
flanges. Measured to the outside of sheet metal at foremost
point of rocker panel.
BOTTOM OF DOOR TO GROUND, CLOSED — FRONT is
the same point on the door as H132 dimension, with door
closed. -
ROCKER PANEL TO GROUND — REAR. The vertical
dimension from ground to bottom of rocker panel, excluding
flanges. Measured to the outside of sheet metal at front
of rear wheel opening.
BOTTOM OF DOOR TO GROUND, CLOSED — REAR is
measured in same manner as H133.
WINDSHIELD SLOPE ANGLE. The angle between a ver-
tical line and the windshield surface at car centerline.
On compound-curved windshields the chord of the arc
is used and limited to that section of the windshield
comprehended by an 18-inch chord.
HEADLAMP CENTERLINE TO GROUND is measured verti-
caliy to the center of the upper lamp.
TAILLAMP CENTERLINE is measured vertically from
ground to the centerline of the upper bulb.
Ground Clearance Dimensions
H102
H104
H106
H107
H147
H153
H156
BUMPER TO GROUND — FRONT. Minimum dimension.
includes bumper guards.
BUMPER TO GROUND — REAR. Minimum dimension,
includes bumper guards.
ANGLE OF APPROACH. The angle between ground and
a line tangent to the front tire static loaded radius arc and
the first point of interference, i.e., bumper, guard, gravel
defiector, fender or other component, excluding license
plate. This dimension may be determined graphically for
reporting purposes.
ANGLE OF DEPARTURE. The angle between ground and
a line tangent to the rear tire static loaded radius arc and
the first point of interference, i.e.. bumper, guard, gravel
deflector, tail pipe, fender or other component. excluding
license plate. This dimension may be determined graphi-
cally for reporting purposes.
RAMP BREAKOVER ANGLE. The supplement of included
ramp angle (180° minus included ramp angle) over which
car can pass without interference; measured with car sitting
on a level surface. using lines tangent to arcs of front and
rear static loaded radii and intersecting at point on under-
side of car which defines the smaliest angle.
REAR AXLE DIFFERENTIAL SYSTEM TO GROUND is a
minimum Clearance.
MINIMUM RUNNING GROUND CLEARANCE. Location of
measurement on the car is to be clearly recorded.
MVMA Specifications Form
Passenger Car
Interior Car And Body Dimensions — Key Sheet
Dimension Definitions
Front Compartment Dimensions
L31
H61
Н75
117
H18
140
Rear
L50
+453
476
H POINT TO VERTICAL ZERO LINE —— FRONT is a horizonta!
EFFECTIVE HEAD ROOM — FRONT. The dimension from
Point 10 the headlining, plus a constant of 4.0 inches, meas-
ured along a line 8" to mar of vertical.
EFFECTIVE T POINT HEADROOM — FRONT. The arc Gi-
mension from the T Point to the headiining plus 30 inches.
MAXIMUM EFFECTIVE LEG ROOM — ACCELERATOR.
Measured along a diagonal line from the Manikin ankle
-pivot center to the H Point plus & constant of 10.0 inches. For
teadie type accelerator pedals, the leg room is measured
with the Manikin's right foot on the accelerator pedal and the
Manikin Heel Point at Accelerator Heel Point. All other types
of accelerator pedals will be measured with the Manikin toot
angle set at 87° and the shoe touching the pedal.
H POINT TO HEEL POINT — FRONT. The vertical dimension
from the H Point to the Accelerator Hee! Point.
H POINT TRAVEL. The horizontai dimension between the H
Point in the Most forward and rearward seat positions.
SHOULDER ROOM—FRONT. The minimum dimension
measured laterally between the trimmed surfaces on the ¥X"
plane through the H-point—front within the belt line to 10
inches above the H-poin-—froni.
HIP ROOM—FRONT. The minimum dimension measured
laterally between the trimmed surfaces on the "X" plane
through the H-point—front within 1.0 inches below and 3.0
inches above the H-point height and 3.0 inches fore and aft
of the H-point.
UPPER BODY OPENING TO GROUND — FRONT. The ver-
tical dimension from a point on the trimmed body opening to
the ground, measured at the H Point station.
STEERING WHEEL ANGLE — VERTICAL. The angle meas-
ured from a vertical to the surface plane of the steering
wheel. '
BACK ANGLE — FRONT. The angle measured between a
vertical line through the H-Point-Front and the torso line.
Compartment Dimensions
H POINT COUPLE DISTANCE. The horizontal dimension
from the front seat H Point to the rear seat H Point.
EFFECTIVE HEAD ROOM — REAR. The dimension from the
H Point 10 the headlining, plus a constant of 4.0 inches,
measured along a line 8* to rear of vertical.
EFFECTIVE T POINT HEADROOM — REAR. Measured in
the same manner as H75.
MINIMUM EFFECTIVE LEG ROOM — REAR. Measured
along a diagonal line from the ankie pivot center to the H
MVMA-404-76
L4B
Wa
wE
H51
Luggage Compartment Dimensions o]
vi
H195
Point plus à constant of 10.0 inches, with the foot positioned
to the nearest interference between the seat structure and
toe, instep of lower leg.
H POINT TO HEEL POINT — REAR. The vertical dimension
from the H Point to the Manikin Heel Point on the depressed
KNEE CLEARANCE. The minimum dimension measured
trom the knee pivot center to the back of front saatback
: minus 2.0 inches. . ” i
REAR COMPARTMENT ROOM. The horizontal dimension
‘from the back of front seat to front of rear seat back at height
tangent 10 the top of rear seat cushion. 2”
— SHOULDER ACOM—SECOND. The minimum dimension
measured laterally between trimmed surfaces on the "x"
plane through the H-point-—second within 10.0-16.0 inches
above the H-point—second.
HIP ROOM—SECOND. Measured in the same manner &s -
Wo.
UPPER BODY OPENING TO GROUND — REAR. The verti-
cal dimension from a point on the trimmad body opening to
the ground, measured 13.0 inches forward of the H Point.
LUGGAGE CAPACITY — USABLE. The lola luggage com-
partment luggage capacity in cubic feet with the tire and
tools in piace.
LEFTOVER HEIGHT. Vertical dimension from the highest
point on the luggage compartment lower opening to
ground, excluding corner radii.
Station Wagon — Third Seat Dimensions
was
W865
Le6
Page 32
SHOULDER ROOM—THIRD. Measured in the same manner
as W4.
HIP ROOM—THIRD. Measured in the same manner as WS.
EFFECTIVE LEG ROOM — THIRD SEAT. Measured along a
- diagonal line from ankle pivot center to H Point plus a
constant of 10.0 inches. With rear-facing thirg seat, foot is
positioned in foot weil or to nearest interference with rear
end or rear closure. 2 В
EFFECTIVE HEAD ROOM — THIRD SEAT. The dimension
from H Point to the headlining, plus a constant of 4.0 inches.
Measured along a line 8° to rear of vertical. -
EFFECTIVE T POINT HEADROOM — THIRD SEAT. Meas-
ured in the same manner as H75. “о. О
т
o
Lk
1978 CORVETTE
GENERAL
MODEL IDENTIFICATION ............. cca. 2
SERIAL NUMBERS AND IDENTIFICATION ............ 3
EXTERIOR EQUIPMENT .....vw.oo.oco-rreaesoronooreo 4
INTERIOR EQUIPMENT .....o.oocecxocerrosmervn 5-6
EXTRA COST EQUIPMENT ......2 244110155000 008 7
AIR CONDITIONING EQUIPMENT .................. 8
OCTOBER 1977 GENERAL—1
MODEL IDENTIFICATION |
MODEL PASS OR
BODY SERIES NAME BODY STYLE DESIGNATION SEATS
Y-CAR CORVETTE 2-Dr. Sport Coupe 1YZ37 2
2-GENERAL
OCTOBER 1977
1978 CORYETTE
SERIAL NUMBERS AND IDENTIFICATION
ONLY BASIC DESIGNATIONS SHOWN
VEHICLE IDENTIFICATION NUMBER
ENGINE IDENTIFICATION
Vehicle Designation Interpretation
1 Z 87 L 8 S 400001
| Sequentíal Number
Assembly Plant (*)
Model Year 1978
Engine Type (**)
Body Style (last two digits of model Number)
Car line and Series (***)
Make (“1” for Chevrolet)
*S — St. Louis-Chevrolet
**L — Y8-350 (185 EP.)
X — Y8-350 (220 ELP.)
***7 — Corvette
EXAMPLE: The twenty-fifth Chevrolet vehicle built at
Chevrolet-St. Louis if it were a 1YZ37
model (Coupe) with a V8-350 (185 Н.Р.)
engine would bear VIN Number
1787185400025.
Location ........ Stamped on plate attached to left
hand windshield piliar.
TRANSMISSION IDENTIFICATION
Example: F1210CHW
Source Production" Type
Designation Month & Date Designation
F (Flint) 1210 CHW
350 Cubic Inch 8-Cylinder
CHW - Regular engine, 4-speed.
CLM - Reguiar engine, 3-speed automatic.
350 Cubic Inch 8-Cylinder (RPO L82)
Example: R8EO!
Type Source Model Year Production”
Designation Designation 1978 Month & Date
56 R (Muncie) 8 EO1D*
S6 |4-Speed | V-8 engine $ R - Muncie
STL] 3-Speed Auto. | V-8 engine | Y - Toledo
Location:
4-Speed ....2244 004000 000000 0 Stamped on
the right side of the case at adapter.
3-Speed Automatic .... 2.402000 000 Nameplate
on right side transmission, above filler plug.
OMonth: E denotes May; 01 denotes ist day.
-Alpha Characters used in identifying the Calendar Month
A - January D- April K- July R - October
В - February E - May M - August S - November
C - March H-June P -September T -December
*.The letter *D” or “N” following the date numerals
indicates day or night shift, on automatic only.
1978 CORVETTE
CMR - Optional engine, 4-speed.
CMS - Optional engine, 3-speed automatic.
Location:
8-Cylinder engine ....o.oser creo, Stamped on
top front of RH bank of cylinder and case.
* Month: December, 12: 10th day of December, 10.
REAR AXLE IDENTIFICATION
OCTOBER 1977
OK - 3.08 Axle
ОМ - 3.36 Axle
OH — 3.55 Axle
OJ — 3.70 Axle
Location, Identification Number
Bottom edge of differential
carrier flange.
See Power Train Section for
additional information.
GENERAL-—3
EXTERIOR EQUIPMENT
A-GENERAL
STANDARD EXTERIOR EQUIPMENT
FRONT
Radiator Grille — Black Injection Molded Plastic
Parking Lamps — Clear Lens, Amber Belts
License Plate Omament, Black, Bright “Corvette” Letters (RPO BY8) —
For states not using front license plate
Retractable Headlamps, Painted Bezels
Front Crossed Flags Emblem with 25th Anniversary Design
Windshield Reveal Moldings, Painted Black
Concealed Windshield Wipers with Integral Washers in Wiper Arms
Body Color Front Bumper Cover and Black Painted Simulated Bumper
Guards (same as rear)
SIDE
Black Rocker Panel Molding with Bright Upper Rib
Front Fender and Rear Quarter Marker Lamps
Front Fender Air Slot, Painted
Front Fender Crossed Flags Emblem
Mitror Outside Rear View LH
Wheel Trim Ring and Hub Cap, Bright
Roof Drip Moiding — Bright
Removable Roof Panels
Press-Flap Door Opening Handles — Bright
Key Locks — Bright (LH Controls Theft Alarm)
Door Belt, Bead Molding — Bright
“L87 Hood Emblem (RPO L82 only)
REAR
Rear Bumper Cover “Corvette” Nameplate
Tail Lamps Single Outboard
Back-Up Lamps, Single Inboard (Includes Red Reflex)
Rear Bumper Cover License Plate Compartment
Body Color Urethane Rear Bumper Cover with Black Pzinted Simulated
Bumper Guards
Crossed Flags Emblem with 25th Anniversary Design on Fuel Filler Door
OCTOBER 1977
1978 CORVETTE
INTERIOR EQUIPMENT
STANDARD INTERIOR EQUIPMENT
ROOF AND PILLARS
Molded Headlining, Padded with Sun Visor Pockets
Windshield Garnish Moldings, Plastic, Interior Color-Keyed
Sunshades, Padded with Brushed Hardware and Swivel Feature
10” Rear View Mirror, Padded, Black Back with Black Finish Support,
Windshield Mounted
Roof Center Strut, Padded with Bright Hardware
Top Header Release Latches, Bright
Fixed Rear Window, Painted Frame
Door Operated Center Dome Courtesy Light
Coat Hook, RH Side
SEATS AND FLOOR COVERING
Bucket Seats — with Integral Head Restraints
Passenger and Stowage Compartment Floor Carpet with Sound Blanket, (Interior
Color-Keyed)
Seat Back Latch Bright
Seat Adjuster Lever Knobs — Interior Color-Keyed
Color-Keyed 3-Point Seat Beits, Non Detachable Shoulder Belts, Locking Retractors
Floor Stowage Compartment — 3-Doors, Carpeted with Push Buttons and Painted
Trim Rings
Floor Stowage Compartment Door Trim Rings and Push Buttons — Painted — Bright
Body Sill Plates — Bright
Roof Panel Stowage Vinyl Bag and Tie-Down Straps, Color-Keyed
DOOR AND QUARTER PANEL
Door Padded Armrest with Assist Grip — Grained Vinyl with Stitching
Door Remote Control Handle — Chrome and Painted
Door Locking Knobs and Escutcheons — Chrome and Painted
Door Trim Panel Carpeted, Scuff Area with Map Pocket
Door Locking Knob (Integral with Armrest) — Bright
Window Control Handle — Bright with Black Plastic Knob
Kick Pad Carpeted — Interior Color-Keyed
1978 CORVETTE OCTOBER 1977 GENERAL--5
INTERIOR EQUIPMENT | “
INSTRUMENT PANEL, CONSOLE AND STEERING WHEEL
Light and headlamp rotation switch.
Windshield wiper and washer switch.
140 mph — 220 km/h speedometer, odometer and trip odometer (miles) mph dominant.
Brake waming indicator — “Brake”, red in back ‘window.
Hi-beam indicator, blue in back window.
Turn signal indicator, green in back window.
7000 rpm tachometer.
Seat belt warming indicator — “Fasten Belts” red in back window.
Water temperature gauge. Thermometer 1.5.0. symbol
Air conditioning outlets RPO C60.
Fuel gauge “Unleaded Fue! Only”. Note, gas pump 1.8.0. symbol.
Low fuel (RPO U41) and generator waming indicators — “LOW FUEL” (upper window)
“GEN” (lower window). Low fuel indicator activated when fuel drops below
approximately 4 gallons.
Outlets, flow-thru ventilation, or Air Conditioning RPO C60 (LH and RH) black
with bright treatment
Voltmeter, battery 1.5.0. symbol,
Heater or air conditioning control — slide lever design.
4-Speed transmission shift pattern or automatic transmission selector.
Coin receptacle,
Cigar lighter and ash tray,
Oil pressure gauge, oil can 1.5.0. symbol.
Clock with sweep second hand.
Trip odometer reset knob (thru lens) — black.
Glove compartment door lock — chrome. Automatic light in glove compartment.
Control knob for cowl vent door (LH and RH) — trim center,
Button for regulating side outlet flow (LH and RH) — black.
Headlamp rotation switch (independent operation) — black.
Hood release — black handle with white “hood release”,
Instrument panel pad — trim color.
Floor center console and trim plate — low gloss black finish.
Stalk on steering column controls turn signals and headlight high-low beam.
Also includes cruise control switch (RPO) when ordered.
Parking brake lever — bright with black handgrip, on tunnel between seats.
Steering wheel, color-keyed 4-spoke vinyl with cross flags emblem.
Black hazard warning switch button on steering column.
Steering column ignition switch and lock — 5 position. Chrome. On steering column.
Key release lever on steering column.
GLASS (TINTED)
Windshield laminated safety plate.
Door windows, safety solid plate.
Fixed rear windows, safety solid plate.
6—GENERAL OCTOBER 1977 1978 CORVETTE
=
: EXTRA COST EQUIPMENT
EQUIPMENT RPO ACC
POWER TEAMS
Turbo-Fire 350 V8 Special Performance ........ ce aes sae eres L82
4-Speed manual transmission — close ratio .....800 00005000 00000000 M21
3Speed automatic transmission . ...e_rerree=oorderereraco. г... M38
Rear Axle: Economy ratios ....orreesvmosroroescoernvrodso0oadarreno G95
POWER ASSISTS
Power windows ....eco.reesorr—rrssaoororora 10 4 4 8 4 0 4 0114 4 A31
Power door locks 2.4.4... 4444 0 0 4 0 4 0 00 0 0 a 0 4 0 a 0 0 0 1 4 500000 0 AU3
OTHER OPTIONS
Air conditioning, all weather (See page 8 for content) ................. C60
Antenna, power ...wooereorororecorreoyermarernrtsrraaconoa U75
Battery heavy duty, (“Freedom sealed battery, 4000 watts) ............. UAl
Compass +o vv tt ts vas 0 01 0 0 01 00000 4 0 0 68 00 010 0 0 00400000 ACC
Convenience package, consists Of: . ............. cian ZX2
Lamps — delayed dome and courtesy (C94)
Mirror — visor vanity (D34)
Warning — headlamp on (T63)
Lamp — Engine compartment (U26)
Indicator — iow fuel (U41)
Floor mats (B32)
Intermittent windshield wipers (CD4) — Interim
Defogger, rear window Electto-Clear ............. cca Cay
Emission control, high altítude ......reoesosxoeraosvreresoroosaarooxno NA6
Floor mats, black rubber ....Ñ..vpo.oorraerroeroroerrascargaoerare mea ACC
Mirror, right hand .....er_exe-—oosroeovrosrerovscosererCsanorara res ACC
Mirrors, dual sport . ...eoo.-coexeorrorerrorvrrrecerrermarrere D35
Paint Anniversary ....os=sesesoerroorensn o radcsoodorasovonsa oros B2Z
Radio equipment: Radios, pushbutton — includes rear deck antenna
Radio AM/FM stereo CB radio” ....W.cocoroesnrrenmroosreaar ro rre UP6
Radio, AM/FM (Includes fixed height rear antenna and 2-speakers) ....... U69
Radio, AM/FM stereophonic (Includes fixed height rear antenna and 2-speakers) U58
Radio sterephonic AM/FM with tape player ......o.eceeceesodvecnoo UM2
Dual rear auxiliary speakers ........240 2440 1000 05 04 0500008 U81
Speed and cruise control ....ñ.o.o_oc.rerrodoosarrormernrretcrara K30
Spotlight, hand portable .........ioe.o-xceerasxerecaorervre enana ACC
Sport steering wheel, tilt and telescopic . ....oerecrecrerororermam. N37
Suspension, Gymkhana — front and rear, consists Of: ......._—e-rerecereocoo FE?
Front stabilizerbar .......... 1.12 dia
Front stabilizer bar bushings . . . .. 1.06 dia
Front springrate .......... 550 Ib/in
Rear stabilizer bar ........... 0.44 dia
Rear stabilizer bar bushings ..... 0.33 dia
Rear spring rat ........... 304 Ib/in
(7 leaf with spacer)
Front and rear shock absorbers ........ specific valving
Trailering package, consists Of: . . .PQo.reesoeassovreor0dereroreveo ZN1
YO! heavy duty radiator, standard engine with M38 transmission, and FE7
and FE7 Gymkhama suspension.
Wheels, cast aluminum ...oo.roere.wreresoosroasr oe rmmaoamamrurorao Y JB
FACTORY INSTALLED REGULAR PRODUCTION TIRES
P225/70R15 — HWY, — Radial — White Lettered Steel Belt . ............. QRZ
P255/60R15 — HWY. ~ Radial — White Lettered FabricBelt ............. QBS
1978 CORVETTE OCTOBER 1977 GENERAL—7
AIR CONDITIONING
FOUR-SEASON (RPO C60)
Heater integrated; manually controlled by two sliding lever controls on
instrument panel, plus a 4-speed fan switch. Left lever uses vacuum
supply and electrical switches to operate mode doors and compressor.
Right lever uses bowden cable to temperature door in selector duct
assembly.
BASIC COMPONENTS
Evaporator, blower, condenser, receiver — dehydrator, refrigerant
(freon) tank, air intake assembly and duct assembly for both
systems.
EQUIPMENT (Used in addition to or in place of base equipment)
CHASSIS
Front and Rear Springs . ...o.oocooasoenma Heavy duty
Rear Axle Ratio — Refer to Power Trains Section
POWER TRAINS
Fan Blade . ............. a vu 1000 0 ...... Thlade
Crankshaft Pulley ................ Single, two grooves
Water Pump & Fan Pulley .......... Single, three grooves
Compressor & Crankshaft Belt ................. One
Generator ......242. 40420000 à ee... ... 61 Amper
8-GENERAL OCTOBER 1977 1978 CORVETTE
-
1978 CORVETTE
DIMENSIONS
AND
WEIGHTS
INTERIORDIMENSIONS ............. co. 2
EXTERIORDIMENSIONS . . . ................ ко 3,4
VEHICLEWEIGHTS .............. creas, 5
OPTIONAL EQUIPMENT WEIGHTS .................. 5
OCTOBER" 1977 DIMENSIONS AND WEIGHTS-1
— INTERIOR DIMENSIONS
FRONT COMPARTMENT
DESCRIPTION
to
SEAT AND ENTRANCE
t
VISION AND CONTROL
H to bottom
center to car
to
LUGGAGE COMPARTMENT
| V1 | Luggage Capacity - Usable (Cu.Ft.) | 8.4
2—DIMENSIONS AND WEIGHTS OCTOBER 1977 1978 CORVETTE
7 EXTERIOR DIMENSIONS
—
1130 a Vertical Body Zaro Lera
LH —
Actus from —— ged) L123
of dash
(128 (129
LE?
L101 — 4.195
1103 = || - — -. == —= —-—— нок
LENGTHS
CODE
L101 | Wheelbase
L1
Li
- t
- rear
structure at car center
to rear
to
at center
to
to
WIDTHS
Tread - front
read - rear
Maximum width of car
ront
Rear
1978 CORVETTE OCTOBER 1977 DIMENSIONS AND WEIGHTS—3
EXTERIOR DIMENSIONS |
am er
нА
= =] CIF . H126
74
5 L 1 |
H102 H136 —
| — HII) 37 104
Horizontal “H115 Design Lood -H116- Design Lood
bôdy zéro line
H14B ~ —H149 — HI5C — H151 H152 —
Static lozded radius Mendes ramp nic Static loaded нана
(a) Catalytic converter.
4—-DIMENSIONS AND WEIGHTS OCTOBER 1977
1978 CORVETTE
LE
VEHICLE WEIGHTS
CORVETTE
MODEL BASE VEHICLE TYPE | SHIPPING WEIGHT | CURB WEIGHT
DESIGNATION ENGINE Description Front | Rear | Total | Front! Rear | Total
1YZ37 350 Cu.In. V8 (148) | 2-Door Sport Coupe] 171711727] 3444 11689 | 1883 | 3572
SHIPPING WEIGHT: Weight of basic vehicle with regular equipment, including grease, oil, engine
coolant to capacity and (3) gallons of gasoline.
CURB WEIGHT: Shipping weight plus gasoline to capacity.
For total shipping, and curb weights of vehicles equipped with the following options, add to, or
deduct from, the base vehicle weight (Ibs.)
1978 CORVETTE
Rear Window
Air Conditioning
OCTOBER 1977
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
“+
DIMENSIONS AND WEIGHTS-5
BODY
EXTERIORPAINTPROCESS . . . ................... 2
EXTERIOR-INTERIOR COLORS ................... 3
BODY CONSTRUCTION AND GLASS AREA ............ 4
1978 CORVETTE OCTOBER 1977 BODY—1
EXTERIOR PAINT PROCESS
EXTERIOR PAINT PROCESSING PROCEDURES
PUTTY RUB AND SPRAY BODY PRIMER
Operation No.
1.
6.
10.
Dry sand all plastic surfaces of body, exterior and
interior to be finish painted except interior of top
compartment, engine compartment and underside of
front and rear fenders.
Vacuum all body surfaces, exterior and interior.
. Solvent clean all surfaces with thinner applied with
clean cloth,
. Wipe on red rubbing putty on all exterior surfaces with
substantial pressure to work putty into pits of the
fiberglass.
. Vacuum all surfaces to remove excess putty.
Spray primer-surfaces on all exterior surfaces,
underside of front and rear fenders, engine
compartment and top compartment,
. Bake 45 minutes at 275°F.
. Putty glaze where necessary with gray putty.
. Water sand all exterior and interior surfaces except
interior of top compartment and engine compartment,
Blow-off body surfaces to remove excessive moisture.
11. Putty glaze where necessary with gray putty.
2-BODY
ACRYLIC LACQUER PAINTING
Operation No.
1
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
OCTOBER 1977
Spray all exterior and interior surfaces with sealer,
Air dry 1 minute,
. Spray Acrylic Lacquer over the exterior surfaces of the
body, inside edges of the hood, inner compartment lid,
engine compartment drain gutters, lock and hinge piliar
facings, doors and headlamp openings.
. Flash 3 minutes minimum.
Bake 30 minutes at 180°F.
Cool body to room temperature and repair cracks or
defects with resin mixture patch.
. Wet sand body where necessary and repair defects
using water for lubricant and gray putty for filing,
. Vacuum body.
Spray dark gray repair primer-surfaces on body top
coat areas sanded through to the primer or bare plastic,
Repeat operation No, 3.
Flash 3 minutes minimum.
Repeat operation No. 3.
Flash 3 minutes minimum.
Bake 30 minutes at 180°F.
Cool body to room temperature,
Mask off and spray areas outlined in Corvette Paint
Instruction Drawing No. 334789,
Bake 30 minutes at 180°F.
Cool body to room temperature,
Using an extension gun, insert to maximum length
through door access holes, spray right and left sides of
door inners with aluminum preservative coating.
Machine sand with paper using mineral spirits liberally
applied as the lubricant.
Machine polish body to a high lustre.
1978 CORVETTE
[| EXTERIOR-INTERIOR COLORS
1978 CORVETTE INTERIOR/EXTERIOR COLOR COMBINATIONS
EXTERIOR COLOR INTERIOR TRIM
Black Medium Red Doeskin Bluc Dark Brown Ovster White
Cloth; Cloth/ Cloth/ Cloth/ Cloth; Cloth/ Cloth/
Leather Leather | Leather
Color 19C 192L | 72C T22L | 76C 762L 59C | 592L 29C 2921 69 692L 1X 122L
R R R R R R R R R R R R
7
White
Silver Metallic
Black
Frost Blue
Yellow
R
R R R R R R R
R
R R R R
R
Frost
Red
Metallic
Dark Blue Metallic
Metallic
SAAL AR] A
2 |2 [29 | 22| 9 || р
1978 CORVETTE OCTOBER 1977 BODY—3
BODY CONSTRUCTION AND GLASS AREA
GENERAL
Construction ........... Uniconstruction: fiber
glass reinforced plastic body backboned by a
steel cage outlining the passenger compartment.
Principal members — steel front and plastic rear
— underbody, front and rear end assemblies,
dash panel and hinge pillars are bonded, riveted,
or bolted together and to each other. Hood is
plastic with bonded plastic reinforcement. Two
removable roof panels,
DOORS AND LOCKS
Construction .......... Plastic, double paneied,
reinforced with steel at hinge and lock locations,
Front hinged.
Doorhandles ............ . « Press-flap handles
with fork-type latches, Inside door locking knob
on each door, free-wheeling 2-position inside
GRILLE т.о #4 FF 48 a= & bb 6 # 4 = 6 #4 = #4 5% Black plastic
SEAT CONSTRUCTION
Type and construction ............, Bucket with
integrai head restraints with leather or leather
and cioth cover over polyurethane padding.
WINDSHIELD WIPERS AND WASHERS
Type ...... « sess» Concealed, dual, two-speed,
electric Integral washers provided in wiper arms,
HEADLIGHTS
Type 0000000002007 0a 4. Dual, retractable,
Headlamp door retraction system vacuum operated,
door handles,
HOOD SPARE TIRE
Operation .......... . + . Internal release Location 58 4 4 4 4 #4 LEA +... In well under
lever. Front hinged with telescoping link on fuel tank; accessible from underside of car.
right side, Ratchet-type lock for hold open. Cover with key lock provided.
VENTILATION
Type ...oorcoevorocoserareroeo Cowl top TOOLS
air inlets channel air to cowl side kick panel TYPE 000000000000 eve ees ees Scimsors jack,
outlets controlled by bowden cable and slide and combination jack handle and lug wrench.
type levers mounted in instrument panel center Stowage ......... Inwell inluggage area directly
console. Water drainage at base of “saddlebag” behind passenger seat; carpeted door over well,
plenum chambers.
BODY GLASS VISIBILITY AREA
Windshield ~ Laminated safety plate (tinted)
Doors and Rear Window — solid safety plate (tinted).
4-BODY OCTOBER 1977 1978 CORVETTE
CHASSIS
FRAME AND FRONT SUSPENSION ................. 2
STEERING, DRIVELINE, WHEELS AND TIRES .......... 3
REAR AXLE AND SUSPENSION ................... 4
BRAKES 122240201005 04 4 0 0 0 1 4 0 4 4 0 4 8 ee 1 0 00 0 3
BULBSANDLAMPS ........... i... 6
FUSES AND CIRCUIT BREAKERS . ................. 7
1978 CORVETTE OCTOBER 1977 CMASSIS—1
FRAME AND FRONT SUSPENSION
FRAME
Description ..eo o-eeresodoaro All welded, full
length, ladder constructed frame with (5)
cross-members. Side rails and intermediate
cros>members box section; front crossmember
box girder section. Eight body mounting points.
FRONT SUSPENSION
Description ........... Independent, SLA type,
coil springs with center mounted shock
absorbers, spherical joint steering knuckle
pivots.
Wheel travel (design)
Total ..o.orerresocoonrercocareaoo 7.70
Jounce ...+4.4 +4 555511 11 2 ное 4,76
Rebound .. 1.284880 0000050000 .... 294
Wheel to spring, travel ratio ............ 1.92:1
CONTROL ARMS
Description ....2 2004010 04 00006 Reinforced
steel stamping with pre-loaded steel encased
rubber bushings at pivot.
GENERAL SUSPENSION PROVISIONS
Car leveling ...osreroceoro Front stabilizer bar
Anti-drive control . . Angle of front upper control arm
STEERING KNUCKLES
Description ...4444.0 44000 Forged steel, with
integral brake caliper mounting pads and
detachable steering knuckle arm
Spindle diameters
Inner bearing . .. cv v0 ovo va oe 1.3743-1,3748
Outerbearing . . . ........... 0.8428-0.8433
Spindle thread size ..... 27/32-20 NEF-3 (modified)
Wheel bearings
TYPE .aaroecroeorseroooaoceraa Taper roller
SPHERICAL JOINTS
Wi 00 ue 0000010000 6 Ball stud
Upper and Lower ............ Compression
Bearing surfaces
Upper and Lower ...... Teflon-coated phenolic
SHOCK ABSORBERS
Type «. .e..osr.o Direct, doubie-acting, hydraulic
Piston diameter .....o.oocoonrmmoenreorooooa 1.00
STABILIZER BAR
Type 1.480040 0 014 20 a 0 0100000080 Link
Material ....o _eossscoseccorerra», HR steel
Diameter ....42.2 06400 0 era 000 0200 0.875
Bushing material ...........00404... Rubber
FRONT WHEEL ALIGNMENT (CURB)
Camber (degrees) ......ooonedoa PO.709 + 1/2
Caster (degrees) . .....coomercoaoo P2.405 + 1/2
Toe-in (total) +. 0000004040. 800 ana 0+ 1/32
Steering Axis Inclination (degrees) . 7.683 @ 5° camber
FRONT SPRINGS
Deflection HEIGHTS
Part Assy. Cut-Off Wire Total Rate Free Working
Number Code Length Dia. Coils (Lbs./In.) (In. @ Lbs.)
340519 AA 104.16 680 7.25 550 13.14 10.27 € 1550
346938 AD 121.14 594 8.00 295 15.14 10.49 @ 1355
346939 AH 133.83 ‚609 9.00 295 15.45 10.49 @ 1445
346940 Al 134.31 624 9.00 320 15.33 10.49 € 1530
346941 AK 134.61 638 9.00 345 15.23 10.49 @ 1624
346942 AN 134.99 „652 9.00 370 15.14 110,49 @ 1700
346943 AY 135.40 ‚664 9.00 370 15.38 10.49 @ 1790
346944 AZ 149.75 676 9.00 370 15.63 10.49 @ 1880
354131 АНУ 104.19 „680 7.25 550 13.34 10.27 @ 1660
362150 ANY 104.22 680 7.25 550 13.54 10.27 € 1770
362151 ANZ 104.25 ‚680 7.25 550 13.74 10.27 € 1880
2--CHASSIS OCTOBER 1977 1978 CORVETTE
STEERING, DRIVELINE, WHEELS AND TIRES
STEERING WHEELS
Wheel 15 >. J à Short spoke spider
Type ....... + « 4 spoke with center horn button Attachment to hub ... 5 hex nuts, 7/16-20 UNF 2-B,
Diameter ..q.orecaormecarroo 14.75 x 14.25 arranged on a 4.75 diameter bolt circle
Column ...Ws..eonmeaarcoereeo Energy absorbing Offset ....o.odxoreaooaxecoosocdoroo N-0.50
Gear — Type . . . . Integral, recirculating ball nut with Rim size ..oQeceaneonaooraossoroooneo 15 х 8.00
hydraulic pressure provided Spare ....oeresocsoooo.onoacorro 15 x5.0
from a vane type pump
Ratios ..eQooomnonosoadarrecsvmeoecrereoonro 16.1:1
Overall Ratios . . ..ocarecerroerearro 17.6:1
Number of wheel turns, lock to lock ........ 2.92 TIRES, STANDARD EQUIPMENT
Linkage .......... Parallelogram, rear of wheels, :
two tie rods Construction Cee ae eee ae 0 Steel belted radial
Turning Di Sidewall
Outside front, wall to wall ........e... 38.6 Base fetes ase essere. "e Black wall
Outside front, curb to curb .........e.. 37.0 Optional .....eeeoecereveor. White letter
Inside rear, wall to wall . ............. 11.4 Sizeand ply rating ............. P225/70R15
Inside rear, curb to curb —.......ñ..... 10.5 Specifications
Outside wheel angle with inside wheel Static Loaded Radius e anorvosooerme 12.23
E 15 degrees ....ocorconcacraenco. 13.96 Loaded rev/mi @ 45 MPH DET nn 760
Capacity € 24 psi ......... ++ +++... 1380
E 20 degrees ......ocXcxererecore, 18.04
E 33.9 (limit of turn) ............. 27.01
DRIVELINE
Type ............... Tubular propeller shaft TIRES, OPTIONAL
Number used ..,.,oororoocooao aro ceo One Construction ............. Fabric belted radial
Diameter (OD) . .... citi vet tit ie ons 2.50 Size 1.2.1 202000 0 0 2 420 0 4 1 4 44 4 P255/60R15
Length (C/L of U-joints) Sidewall ........ a 00e 0110006 White letter
Manual ......... 111460 000000 29.50 Specifications
3-Speed Automatic Static loaded radius ............... 11.97
КРО 1.48... ..... 2.2.2... 29.81 Loaded rev/[email protected] mph .............. 479
RPOLS2 0000000000000 000444 29.50 Capacity @24 psi ..... vee omens 14.33
Wall thickness . ..eQwnwcecercscessoasraares 0.083
Universal joints
Type 1.244100 14 2500 0 2 1 0 5 a 0000 0 Cross
Number used 2.424444 001 0202200 0 Two
Bearings ............. Prepack, anti-friction SPARE TIRE
Torque forces ............ Through differential Construction .........0n0... Fabric bias ply
to frame members SIZE «vv vee P195/80D15
Sidewall ........ Blackwall, marked “Temporary”
1978 CORVETTE OCTOBER 1977 CHASSIS—3
REAR AXLE AND SUSPENSION
REAR AXLE — POSITRACTION
Description .......... Fixed differential housing
hypoid ring and pinion gear set, tubular
articulating inner axle shafts and short solid
outer shafts with integral drive flange, indepen-
dently sprung rear wheels.
Pinion offset 214444000000 000 0 000 0 1.5
Pinion bearing adjustment .............. Shim
Hypoid gear PD ...oscocrrecaroosona 8.375
Lubricant
Type ...….0.800 12000 u 000 GL-5 Gear lubricant
Viscosity + vv ov va os acannon esas 80W-90
Capacity (pts) ............ terres 3.75
RING AND PINION GEARS & TOOTH COMBINATIONS
3.08 2.211010 caste aaa 40,13
3.36 ..oarorcesosaooorneeradaoeo 37,11
3.55 Lea 0000 a 11 00 au 0 001 0010000 32,9
3,70 1.212608 2101 0 0 0 00 0000008 37,10
AXLE SHAFTS
Inner .....4+4-1 5000010 0 +... . Welded steel
tubing with universal joint attachments to short
shafts at each end.
Quter ...aq.ocrssoo» Short, splined high-alloy steel
with integral wheel mounting flange
Axle bearings ....ñoecxroo Inner and outer tapered
roller, steel encased rubber bearing seals
STABILIZER BAR (optional)
Diameter . ...eoomicoecrooaorVo- coa da 0.440
4-CHASSIS
OCTOBER 1977
SHOCK ABSORBERS
Type .......... Direct, double-acting, hydraulic
Piston diameter . ...oacxscocoremocoeoo 1.00
REAR SUSPENSION
Description ............... Full independent
with frame-anchored differential. Position of
each wheel established by 3 links; tubular axle
drive shafts, transverse strut rods, torque
control arms. Vertical suspension loads taken by
transverse leaf spring. Built-in camber adjust-
ment at strut rod inner ends.
Wheel travel (design height)
Total ER he hee eee eae ee 6.50
Jounce ...oeocoorsodssaodoecsarasoodo:a 3.70
Rebound ...og_on-rereroosvwr nor reo 2.80
REAR WHEEL ALIGNMENT
Curb
Camber (degrees) ............. N7/8° + 1/4
Toe-in (total} ......2..2.44 2201006 0+ 1/32
REAR SPRING
Type 2.200006 05 5000500 0 Variable rate, 10-leaf
Material ....... Chrome carbon steel, heat treated
Length (developed) between eye centers ..... 48.60
Width RR KR RE RR ana 2.50
Design load, Ib @ camber .......... 1420 @ ‚21
Spring liners
Number .... 2424414 #2 14 0 2 a 0 52 2500 à 9
Location .............. Between all leaves
Material . ......... Polyethylene with graphite
1978 CORVETTE
T
System
Diameter and Width
x width x
area
area
area
arca
area
arca
1978 CORVETTE
BRAKES
Disc Front and Rear, Power Assist Std.
differential and
cast
11,75 x 1.25
1:1
rotors on
OCTOBER 1977 CHASSIS—5
BULBS AND LAMPS
NUMBER REQUIRED
BULBS AND LAMPS - AND TRADE NUMBER
2-1156
Quter
Headlamp
hi-beam indicator
2-1157 NA
(a) Light emitting diode.
6—CHASSIS OCTOBER 1977
nm
CANDLE POWER
PER LAMP
32
1978 CORVETTE
FUSES AND CIRCUIT BREAKERS
wl
LOCATION
CIRCUIT AND CIRCUIT*
Air conditioning
Anti
License
pump
* Letter suffix indicates same circuit
1978 CORVETTE OCTOBER 1977 CHASSIS—7
-
E"
1978 CORVETTE
FUEL SYSTEM
EXHAUST SYSTEM
LUBRICATION SYSTEM
COOLING SYSTEM
ELECTRICAL SYSTEM
POWER TRAINS
POWER TEAM COMBINATIONS .........ereeoreon. 2
POWER TEAM MULTIPLICATION FACTORS . . ......... 2
ENGINE DATA ANDRATINGS .......reecrerevao. 3
ENGINE SPEED AND PISTON TRAVEL ........ ee... 3
VEHICLE PERFORMANCE FACTORS . .............. 4
PRINCIPAL COMPONENTS ...........rrerrecmre. 5
TT 10
SEE ane 10
EMISSION CONTROL EQUIPMENT . . ............... 11
SE 12
DE 13
SEE 14
LL La LA Aa A A A a aa Ada aa 15
FOUR SPEED TRANSMISSIONS .......22222020000 00 15
THREE-SPEED AUTOMATIC TRANSMISSION .......... 16
OCTOBER 1977 POWER TRAINS--1
POWER TEAM COMBINATIONS
POSITRACTION AXLE RATIOS (*)
MODEL ALL STATES WITH ALT. RING LW.
ENGINE TRANSMISSION APPLICATION BASE OPTIONAL | RPONA6 | GEAR CLASS
350 Cu. In. V-8
6.7 ]itre ) — (148) ст d Auto ne | Sport Coupe 08 a 5551
Base — all states peed Attomane ad — 8.375 | 4000
350 Cu. In. V8 4-Spd. (2.64:1 low) 3.701 3.36:1
(5.7 Не) — (182) 4-Spd. (2.43:1 low) Sport Coupe 3.70:1 —
Optional — all states | 3-Speed Automatic 3.55:1
except Calif.
(*) Air conditioning available with all transmissionfaxle combinations.
(a) Not available in California.
MULTIPLICATION-FACTORS
WITH MANUAL TRANSMISSION
TOTAL GEAR REDUCTION AXLE
ENGINE CARBURETION | TRANSMISSION ™ Ind ad ath Rev RATIO
350 Cu. In. V-8
4. .85: 9. 6.79 4.54 3. . .
Standard (L48) Barrel 4-Speed (2.85:1) 58 5 36 9.58 3.36
350 Cu. In, V-8 4-Вапе! 4-Speed (2.64:1) 9.77 6.47 4.96 3.70 9.43 3.70
RPO 1.82 4-Speed (2.43:1) 8.99 5.96 4.55 3.70 8.69 3.70
WITH AUTOMATIC TRANSMISSIONS
SELECTOR TOTAL TORQUE?
ENGINE TRANSMISSION POSITION MULTIPLICATION AXLE RATIO
. Drive 15.52:1 - 3.08:1
350 Cu. In. V-8 3-Speed Low 15.52:1 - 7.76:1 3.08:1
Standard (L48) Automatic Second 15.52:1 -4.68:1 a
Reverse 11.95:1 - 5.96:1
Drive 17.90:1 - 3.55:1
350 Cu. In. V-8 3-Speed Low 17.90:1 - 8.95:1 3.55:1
RPO L382 Automatic Second 17.90:1 - 5.40:1 te
Reverse 13.78:1 -6.89:1 |
*_ Axle ratio x transmission ratio.
2—-POWER TRAINS OCTOBER 1977 1978 CORVETTE
=
+
ENGINE DATA AND RATINGS
GENERAL DATA
A
Number of
Taxable
an to rear
ADVERTISED ENGINE RATING
Engine лова: Below Above Net Brake Net Torque €
Availability | Carburetor Ft. | 4000 Ft. | Calif. [email protected] | RPM (Ib. ft.
350 Cu. In. | RFOIA8 | 4-Barrei
ENGINE SPEED AND PISTON TRAVEL
Standard КРО 182
Crankshaft RPM @ MPH
Travel
1978 CORVETTE OCTOBER 1977 POWER TRAINS—3
VEHICLE PERFORMANCE FACTORS |
4—POWER TRAINS
КРО 148 RPO L82
ENGINE 185 HP 220 HP
MODEL 1YZ87 1YZ87 |
4-SPEED TRANSMISSION
Pounds per Net Н.Р.
In.
Net HP/Cu. In. Displacement
cu.
cu
Pounds per Net H.P,
Net FLP./Cu. In, Displacement
GLOSSARY
. Curb Weight plus 300 Lb
Performance Weight (weight of two 150 Ib passengers)
Power Displacement Crankshaft Revs/Mi x Piston Displacement
2x1728
Power Displacement
Displacement Factor Performance Wt (tons)
OCTOBER 1977
1978 CORVETTE
+
PRINCIPAL COMPONENTS
+
CYLINDER BLOCK EXHAUST MANIFOLD
Material ....ei—eosocoroesrora Cast alloy iron Material ....oorosxeoorerorerco Cast alloy iron
Bore ...oeoreoearmmodsraro . 3,9995-4.0025 Туре... .,....... Dual, 4 port, exhaust emission
Bore Spacing (Centerline to Centerline) ....... 4.4 to a single runner with center takedown collector
Bearing Caps (Number, material & attachment) Outlet Diameter (Nominal) ............. 2.50
V8-350 Cu.In. (L48) ....... 5, cast iron; 2-bolt
Y8-350 Cu.In. (L82) .. No. i & 5, cast iron; 2-bolt
No. 2, 3 & 4, nodular iron; 4-bolt
Water Jackets ..... Full length around each cylinder
CYLINDER HEAD
Material ........... Highchrome castalloy iron
Bolt Number ...eorcoroerosrreneeeoro 34
Bolt Size . .. e... e.” .. 4375 dia.; 14 threads/inch
COMBUSTION CHAMBER VOLUME
(Total chamber volume of assembled engine with piston CRANKSHAFT
at top center) Material
V8-350Cu.In. (148) ............. 6.27 Cu.In. RPOLAS ............... Nodular cast iron
V8-350CwIn. (182) ............. 5.55 Cu.ln. RPOL82 ......cocoaocesrerveroo Forged steel
End Play ..... _or-—osaroasa mare .002-.007
INLET MANIFOLD Counter Weights ......44 420400110000 5 6
Material Crank Arm Length .................. 1.74
ВРО 148 2... ............ Cast alloy iron Torsional Damper . . .........-.. Sintered iron
RPOLB2 .......... 10 0002000 Aluminum TimingGear ........... Steel; sprocket & chain
Туре. 2 5. 5 кок ококовобокобокоб со, 8 port, double deck Pulley Pitch Diameter ................ 6.64
350 CUBIC INCH V-8 ENGINES MAIN BEARINGS
NO. 1 NO. 2 NO. 3 NO. 4
280
‚950
FRONT
aii
SAME ALL
NN -” CONN. ROD
1.898 Le BEARING -
ALL MAIN BEARING 1.902 | JOURNALS 2.4488
JOURNAL DIAMETERS | ` REAR MAIN BEARING
EXCEPT NO. 5 CONNECTING ROD BEARINGS OIL SEAL AREA
- 24.72
1978 CORVETTE OCTOBER 1977 POWER TRAINS-5
PRINCIPAL COMPONENTS
- MAIN BEARINGS VALVE TRAIN
Material ............... Premium aluminum Type .....oc.eroao ... Individually mounted
Туре... . ..,........... Precision removable overhead rocker arms, push rod actuated
Thrust Against BearingNo. ............... 5 Lifters ...2202 001040250010 2 ee 0 Hydraulic
Clearance .....22 42404 (No. 1) .0008-.0020; Push Rods
(No. 2, 3 & 4) .0011—.0023; (No. 5) .0017—.0033 TYPE ..Ñ.oncosoooundornraororna, Hollow steel
Ends
V8-350 Cu.In. (L48) ........... Hardened
Theoretical | Effective | Projected \У8-350 Сала. (182) 2... ....... Hardened
Dimensions Inner Dia Length Area steel insert on rocker arm ends
Bearing No. 1-4 2.4502 ‚752 1.8425 Rocker Arms
Bearing No. 5 2.4508 1.180 2.8919 Material . ................. Stamped steel
Ratio ...onarrodoermormometdaodno 1.50:1
Rotators ...ooc.oroaaaareocedgro Exhaust
VALYE SPRINGS
CAMSHAFT Diameter (LD.)
Material ...oocs.orsonxgerooroa Cast alloy iron V8-350 Cum 22200002 00 0 414 a 4 2 868.884
Drive 2124421214 4 14 La 44 a 1 a a 1110 Chain Instalied Length (1b. @ т.)
Gear ...... +...” Nylon teeth with aluminum hub Valve Closed
Lobe Lift V8-350 CuIn. (148)
V&350 Culn (148) .. .2600 Inlet;.2733 Exhaust Inlet ...... 24154040 0 1. 76-84 @ 1.70
Y8-350 Cu.In (L82) .. .3000 Inlet:.3067 Exhaust Exhaust .......omro ome, 76-84 € 1.61
Bearings 2... 22 0210000 0 5; steel backed babbitt Y8-350 CuIn. (L82) ......... 76-84 @ 1.70
Valves Opened
V8-350 Cu.In. (L48)
Inlet ...... +. +2 + = = +, 194-206 @ 1.25
Exhaust ............. 194-206 @ 1.16
VALVE LIFT Y8-350 Cu.In (L82)........ 194-206 @ 1.25
\8-350 Сил. (148) .... .3900 Inlet;.4100 Exhaust Free Length ...... 11141 1410 0000 6 2.03
V8-350 Cu.in. (L82) . . . . .4500 Inlet;.4600 Exhaust Valve Spring Damper .......... Flat steel, 4 coils
6—POWER TRAINS OCTOBER 1977 1978 CORVETTE
r +
*
o PRINCIPAL COMPONENTS
INLET VALVES EXHAUST VALVES
Material ..................... Alloy steel Material ..,..ocoexmoerxe ro roca High alloy steel
Coating Coating
Type . .n.adecoriaorarcreaarroaraoo None Type ....24 4244 4 6 0 14 02 4 0 Aluminum face
AllStems ................. Chrome flash АН Stems .. 2.244444 4 44 4 144 à Chrome flash
©
LL
A — StemDiameter .............. .3410-.3417 A — Stem Diameter . ............. .3410- 3417
B — OverallLength .............. 4.870-4.889 B — Overall Length
C —Gagelength ................ 4.7854.795 V8-350 Cu.In. (L48) ........... 4.910-4.930
D — Overall Head Diameter V8-350 Culn. (L82) ........... 4.891-4.910
V8-350 Cu.In. (L48) ........... 1.935-1.945 С — Gage Length ................ 4,781-4.791
V8-350 CuIn. (L82) ..... naaa 2.017-2.023 D - Overall Head Diameter
E — AngleofFace .................... 459 V8-350 Cu.In. (L48) ........... 1.495-1.505
F — Guide Diameter .............. 3427-3437 \8-350 Сила. (L82) ..........e. 1.595-1,605
G — Angle of Seat .................... 46° E — Angleof Face .................... 459
H — Valve Angle ..................... 239 F — Guide Diameter .............. 3427-3437
I — Valve Seat Diameter G - Angleof Seat ......resesenerenedo, 46°
V8-350 CuIn. (L48) .........ec.. 1.591-1.597 H — Valve Angle .........0... 02... 230
V8-350 Cun (182) ........... 1.949-1.979 I — Valve Seat Diameter
V8-350 Cu.In. (L48) ........... 1.321-1,327
V8-350 Culn. (182) ........... 1.512-1.551
1978 CORVETTE OCTOBER 1977 POWER TRAINS—7
PRINCIPAL COMPONENTS
PISTONS
Material
V8-350 Cuin, (L48) ...... Cast aluminum alloy
V8-350 Culn. (L82) .... Alum. impact extruded
Head Type
V8-350 Cu.In, (L48) ..eoeeocreroo. Sump
V8-350Culn. (82) .......... Flat, notched
Skirt Type ...orcorzoronrnrovcarerera Slippet
Top Land Clearance
V8-350Cuin. (L48) .......... .0235—.0325
V8-350 Culn, (L82) .......... .030$—.0395
Skirt Clearance
V8-350Culn. (148) .......... .0007-.0017
V8-350Culn. (L82) .......... .0046-.0056
Compression Ring Groove Depth ..... .2218—.2308
Oil Ring Groove Depth ........... .2038-,2128
Pin Bore Offset
V8-350Cuin. (L48) 0.0.0000. 0 u 05 ‚055-065
V8-350 Cu.In. (L82) ....... ce... On center
Compression Hetght
V8-350Culn. (148) .......... 1.558-1.562
V8-350 Cum (L82) ....e.o mm o. 1.553-1.567
PISTON PINS
Material ....ooescosxresecca Chromium steel
Length ....ooncororarrecores 2.990--3.010
Diameter . . .. 4 vv vv tov ov nana .9270—.9273
Clearance in Piston
V8-350 CuIn. (L48 - Base) ....... 00025—.00035
V8-350 Cun, (L82) ...oQooexeco 00045-.00055
PinMounting ........ Locked in rod by shrink fit
8—POWER TRAINS
OCTOBER 1977
VALVE TIMING (Crankshaft Degrees - Excluding Ramps)
V8-350 Culn. (L48)
Inlet Valve
Opens-BIC ....124000000000 00000 28°
Closs-ABC........ RE eae 72°
Duration ......ececwoeeovroocrroo 2809
Exhaust Valve
Opens-BBC ........... RS 78°
Closes - ATC . eecooo eee 30°
Duration ......eeceoocoocoeooaa 288°
V8-350 Села, (1.82)
Inlet Valve
Орепз «ВТС ............. nena. 529
Closes - ABC ....eomrerecccovcrao 1149
Duration . . . . . co «vo « 2 sa eo 0 0248 0 4 4 346
Exhaust Valve
Opens - BBC .....oeoereseaocereoo 98°
Closes - ATC . Cee eee eae 62°
Duration ....... Cee tee aaa 340°
1978 CORVETTE
ak
PRINCIPAL COMPONENTS
terial -...ereorecocarevo. o. Type ....... Multi-piece (two rails and one spacer
Type ...rcccmnono. Straight edge inside of ring Material spacer)
pt a 4104 180 00000 6 a 08080000 0 Radius | Rails ............ ecereseio, Steel
8250 Coin. (LAS) Chrome fish Spacer ........eaocancar.o... Alloy steel
Te et ; Width (assembled) ............. .1850-.1870
V8-350 Cuin. (L82) .... Wear resistant coating Woll Thickness ......... к 150—.156
Wideh moly bdenum inlay Gap... pe 015—.055
V8-350 Cun (48) .......... 0775—0780 Rail Coatings ....qosxererxeeroo Chrome plated
V8-350 Cu.In (L82) .......... 0770-0775
Wall Thickness ......... .........190-.200
e ncearroreovnraroccororcroa à 010-.020
Gap 02 CONNECTING RODS
Material ....ñoos.oecsoecxrorca Drop forged steel
Length (center fo center) ......... 5.695—5.705
COMPRESSION RINGS — LOWER
Material .........¢ cc 000. Cast alloy iron
Type .oocrirarrooao. Reverse twist (top of ring CONNECTING ROD BEARINGS
30 degrees to piston vertical axis) Material ............... Premium aluminum
Face ...enverooroeeorareorcero Tapered Type ...... Lana 0000000 Precision removable
Coating ....e.eceocccocvancayo Wear resistant Clearance ......eoercorearoao .0013—.0035
Width. ..................... 0770-.0775 Theoretical LD, ,....reeoesndcoaero 2.1012
Wall Thickness ................. -190-.200 Effective Length ....... Cee eee ‚797
Gap . citi rarities .... 013.025 End Play ........ Cetera. 006.016
1978 CORVETTE OCTOBER 1977 POWER TRAINS—9
FUEL AND EXHAUST SYSTEMS
FUEL SYSTEM
FUEL TANK CHOKE
Capacity (Gal) .......e..... 24 (approximately) Type .....Ñ..ecs0cedccrreoren.. Automatic
Location ....... In body cavity at rear of deck area
Filler Location ......... Center of rear deck area
FUEL FILTERS, DUAL
In Fuel Tank ...eocroececceorero. Mesh strainer
Carburetor Inlet . . . .. . ovo cv can vous Paper CARBURETORS
Маке & Type ............. 4-barrei, quadrajet
FUEL PUMP SAE Flange Size ................... 1.50
Type ........ Deep cover with vapor return lines. Throttle Bore
Drive . ...e. ocdcrocxreaoacr. Camshaft eccentric Primary ....Ñ.onoresedoororrordvo> 1.38
Location ........... Lower right front of engine Secondary ..... cs ics cea. 2.25
Pressure Range (shut off pressure at 1800 RPM) Venturi
Al Engines ...... 7.50-9.00 PSI at pump outlet Primary ....orceocecocororrerenrno 1.218
Secondary ....ooeocereodreseooo Air valve
AIR CLEANER Secondary Throttle Actuation ........ By linkage
Type ......... Ducted air, closed paper element, approximately when primary valves are opened
thermac, steel/-L48, single snorkel; L82-dual snorkel half between closed and open.
FilterElement . . ............ Oil-wetted paper
EXHAUST SYSTEM
MUFFLERS EXHAUST PIPES
Type ...Ñ.orrrodraoreo, ve = +» Dual, exhaust, Type ........ Two piece; front and rear assemblies
single converter with crossover Material ......... +000. Searnless steel tubing
Construction .......... Heads and body joined DIMENSIONS — O.D. & WALL THICKNESS
by rolled lock seam construction Front Pipes — Laminated (Exhaust to Converter)
Shell ......... .036 sheet steel aluminum coating V8-350CuIn.(L48) .......... 2.50 x .071
\тар „2... ....... .030 indented asbestos sheet V8-350 Cu.In. (L82) .......... 2.50 x .071
Cover . . . . . oaxooadr ea Stainless steel outer wrap Rear Pipes — Laminated (Converter to Muffler)
Heads ......... .048 sheet steel aluminum coating V8350 Cun. (L48) .......... 2.25 x 072
Length, Body ...... 1 00 0 0 0 1 105 0000 16.00 Y8-350 Cu.In. (L82) ......o... 2.25 x .072
Width (LD) +... vt ve ee ct te tev emma 9.00
Height (ID) . .....eoco.ceonnecroserava 7.00 TAIL PIPES
Type ....onenmrvreaneva Steel tubing 2.25 x .062
10—POWER TRAINS OCTOBER 1977 1978 CORVETTE
æ
[O НЕЕ
; EMISSION CONTROL EQUIPMENT
SYSTEM APPLICATION
System Type
— Exhaust
— Underfloor
* _ Not available in California.
BASIC FUNCTION OF SYSTEMS
POSITIVE CRANKCASE VENTILATION
Withdraws oil and gas vapors from the various
cavities throughout the engine for burning in the
combustion cycle.
EXHAUST GAS RECIRCULATION SYSTEM
Meters exhaust gas into induction system for
recirculation throughout the combustion cycle to
reduce oxides of nitrogen emissions.
CARBURETOR HOT AIR
Meters and mixes heated air with incoming cold air
to optimize fuel evaporation.
MANIFOLD AIR INJECTION
Compresses, regulates and distributes quantities of
air to more completely burn carbon monoxide and
hydrocarbon emissions to the exhaust pipe in front
of the converter.
EARLY FUEL EVAPORATION
System is designed to produce a very short engine
warm-up cycle to improve vehicle driveability and
reduce exhaust emission,
1978 CORVETTE
OCTOBER 1977
FUEL EVAPORATION CONTROL SYSTEM
Controls emission of gasoline vapors to the
atmosphere by means of an integral separator with
the fuel tank that separates vapor from liquid fuel - a
filler cap that doesn’t permit venting into the
atmosphere - a canister for storage of vapors - lines,
hoses and valves to control and transport vapors
from fuel tank and carburetor float bowl to storage,
and finally, to the carburetor for utilization in
running the engine.
CONTROLLED COMBUSTION SYSTEM
Increased combustion efficiency through leaner
carburetor mixtures and revised distributor
calibration. Special thermostatically controlled
damper, in the air cleaner snorkel maintains warm air
intake to carburetor.
UNDERFLOOR CONVERTER
The flow of exhaust gases down through the catalyst
within the converter, effectively controls the
hydrocarbon and carbon monoxide to a more
desirable emission.
POWER TRAINS—11
12-POWER TRAINS
LUBRICATION SYSTEM
GENERAL
Type . ..e.ococreaoroaa Controlled full pressure
Main Bearines .......40000 00000000 Pressure
Connecting Rods ....o.rsrovresecao Pressure
Piston Pms . ...osxsoscroraovraccro Splash
CylinderWalls . ........ Pressure, jet cross sprayed
Camshaft Bearings ........c0cv eso Pressure
Valve Lifters . . . . oc vc cet vt sae sav Pressure
Rocker Arms .....44%2 8000000000 Pressure
Timing Gears ...... Centrifugally oiled from front
camshaft bearing
Oil Pressure Sending Unit ©. ........ +.» Electric
Oil Filler
Cap + +. vi tts cra eras asses Positive seal
Location ........ Top rear of left rocker cover
OIL PUMP
Type ..onarrecscorevarararcoe reo Gear
Normal Oil Pressure ...... 32-40 PSI @ 2000 RPM
Intake Type ...oxroesrccoanotrorvenvco Fixed
Capacity (GPM € Eng. RPM) ........ 4.3 € 2000
Regulator Valve ........ Opens between 40-45 lbs
OIL DIP STICK
Location ......... Left side, rear of engine block
OCTOBER 1977
OIL PAN CAPACITY (Quarts)
Refill ....oorenvxcansoaarococererera 4.0
Refili with Filter Change . ...ome-encsrecoo 4.5
OIL FILTER
Type ........... Full flow, throwaway canister
location .......... Left rear underside of engine
Capacity 2.424040 000000000005 One pint
By-pass Valve ........ Opens between 9 to 11 PSI
LUBRICANT GRADES AND TEMPERATURES
20°F and Above ...... 10W-30, 10W-40, 20W-20,
20W-40, 20W-50
0°Fto60°F....... 10W, 5W-30, 10W-30, 10W-40
Below 209F ,......2445 000000 5W-20, 5W30
OIL PAN
Typeof Drain Pug ............... Hex head
Location . ....... Lower rear face of oil pan sump
Size Hex Head. .... eñxreesoorecseoa 860.875
Thread ....o.ooenxcesxexoroceco 1/2-20 UNF 2A
Length ...ono.esceoncondoceda A... 0.81
Diameter . ...eeceeoncr. ere maa ‚410-.430
1978 CORVETTE
LX
GENERAL
Type .. Pressure, vented thru coolant recovery system
Capacity ...........4. 21.6gtz
RADIATOR
Type ......... « «>» « » Copper brass, cross flow
Core Constant and Thickness
Distance between Fins
КРО 148... ................... 20
КРО 182... ............ 2..5... 18
RPO 148 4 wm & 4% & 5 & = + | = 5 5 FF & + 1.96
RPO 182 т т а т тоя та + € E» # Ea + 2.68
Frontal Area (Sq.In.) ................. ‚ 446
Overflow ......... ‚+... Scparate coolant bottle
RADIATOR HOSE
Outlet, Lower (Radiator to Water Pump) . . . 1.75 LD,
Inlet, Upper (Thermostat Housing to Radiator) 1.50 LD.
RADIATOR CAP RELIEF VALVE
Opensat ....... esoo Approximately 15 PSI
FAN
NumberofBlades . .............. 5, staggered
Diameter ...... sa 00002 a 4 01 3008 17.50
Fan Pulley Pitch Diametez .............. 7.00
Fan Cutout ..... Thermomodulated fluid coupting
1978 CORVETTE
OCTOBER 1977
COOLING SYSTEM
THERMOSTAT
Type ....... a 100061 4 86451000 à Pellet
BeginstoOpenat .............. 192-1980
FullyOpenedat .................. 2270
Number Used ..................... Two
Angle of “VV 124 4 4 0 0 0 6 8 4 a 1444220 380-420
Pitch Line
Fan, Generator and Water Pump Belt . . . . 52.50
Fan and Water Pump Belt ........... 32.46
Air Injection ,..... tse ee tna. 32.50
Width .......... bees etme aes 380
WATER PUMP
Type ....2.124 040 44 0 0 a a 424 à Centrifugal
Capacity (GPM @ Engine RPM) .. .. . . 22.7 @ 2000
Bearing .. . . . Permanently lubricated double row ball
Drive 1.220442 0 6 42 44 a 4 a 1 a 1 aa à Fan belt
Ratio (Pump to Engine RPM) .......... 0.949:1
DRAIN LOCATIONS AND TYPE
Engine Block ...,.r.... Plug; right and left center
Radiator ............. Plug; bottom right side
POWER TRAINS—13
ELECTRICAL SYSTEM
SUPPLY SYSTEM STARTING SYSTEM
BATTERY STARTING MOTOR
Voltage Rating and Watts Rotation (Drive End View) .. ......-. Clockwise
Standard a 20000 es «+... 12& 3500 Test Conditions . . Engine at operating temperature
Heavy Duty . ..omasoersesormeo 12 & 4000 No Load Test
Number of Celis and Plates Amps .. 242020001510 005500 0 70-99
Standard... 2e. cee ree ees 6&78 Volts 1.122440 00 0 0100 44 0 00 4100 12
Heavy Duty .. +... ovo viv aviv von 6 & 90 RPM ..oorroecwrerorcesormreo 7800-12000
Cold Cranking Rating Motor Drive
Standard +.oceordoreeeacoe 00 430 amps; Engagement ....... ко казеина о Solenoid
— 200 @ 330 amps @ 100 minute reserve capacity Pinion Meshes at .....2 221002221100 Rear
Heavy Duty ............. 0C @ 465 amps, Pinion Tooth No. ....2..12 041210 00000 9
— 200 @ 375 amps € 125 minute reserve capacity Flywheel Tooth No. ...... Manual Trans. — 153:
Terminal Grounded . ............. Negative : Automatic Trans. — 168
location .......... In stowage compartment Mounting .......-... Bolted to clutch housing
behind driver
IGNITION SYSTEM
ТУРЕ... ......... High Energy Ignition (H.E.L.)
GENERATOR DISTRIBUTORS .......... Refer to chart below
Type ....... Diode rectified with integral regulator
Rating COIL
Amps ...oomnreroo .ervrererr rare 42 Type ....oosarcocecro Integral with distributor
Volts 2.212240 000004 5 0 a 01 0 011 0100 12
Drive + ev vt ee vnc a sao nso a avo By fan belt SPARK PLUGS
Pulley Pitch Diameter .............. .. 2.70 Make & Type ... ee eee eae. ACR4STS
Ratio (Gen to Engine Speed) ........... 2.46:1 Thread Size (mm) ... 2.204220 a mtn an os vs 14
Gap ers 0 0 00110405 .045
TOQUE «vo vn et ese ams mesma 25 lb. ît.
REGULATOR
Type ..... Micro-circuit unit, integrai with generator CABLE ..o noserosrecaro Linen core impregnated
Voltage Regulator with electrical conducting material and
Voltage ....o.r-—reoesoeca 13.8-14.8 @ 850 F insulation of rubber with neoprene jacket
4 à
1 1 0 1
(Initial 69 @ 700/N 60 @ 500/D 80 @ 500/D 129 @ 900/N
Crankshaft Degrees @ RPM (with 120 € 700/D
Mark Location T
Data in brackets ( ) pertains to California.
=== gr MN A
о TRANSMISSIONS AND CLUTCHES
CLUTCHES
steel between friction
sets of two
Driven i
plate
Friction
123.70
Woven
Heat treated HR steet
4-SPEED TRANSMISSIONS
Lubricant 1
Extension
1978 CORVETTE OCTOBER 1977 POWER TRAINS—15
TRANSMISSIONS
THREE-SPEED AUTOMATIC
Automatic hydraulic torque converter with compound planetary
Type - three forward and reverse.
Selector
lever
Method of
an
Establishes of transmission
Valves or from 1-2 or
Regulates line pressure with modulator oil pressure
which varies with to transmission
eater in
Accumulator E 6
Modulator
60
Pressure
@ Idle (a)
Multivane type, sheet metal blade spot welded to steel
that is an in of the converter
& outer
Pump (Drive member)
Converter
Assembly mounted on a one
11
4 steel
Range 2.52:1
Servo Unit
T
bonded
5 each drive & driven
each drive
3 each drive & driven
5 &
5.04:1
:1 to 1.52
5.04:1 to 2.52
Cross-axis
Governor Regulates a pressure to car
the (1-
Dexron 11
Lubricant
Condition RPM input
16—POWER TRAINS OCTOBER 1977 1978 CORVETTE
1978 CORVETTE
Production: 40,274 coupe, 6,502 coupe (pace car), 46,776 total
1978 NUMBERS
Vehicle: 1287L8S400001 through 1Z87L8S440274
1Z8/L8S900001 through 1Z87L8S906502 (pace car)
« Fifth digit varies as foilows: L=350ci, 175hp,185hp
4=350ci, 220hp
Suffix: CHW: 350ci, 185hp, mt CMR: 350ci, 220hp, mt
CLM: 350ci, 185hp, at CMS: 350ci, 220hp, at
CLA: 350ci, 175hp, ce, at CUT: 350ci, 185hp, at
CLS: 350ci, 175hp, ha, at
Block: 3970010: All 376450, 460703: uncertain usage
Head: 462624: All
Carburetor: Rochester Q-jet 417058202: 350ci, 185hp, at
Rochester Q-jet 417058203: 350ci, 185hp, mt
Rochester Q-jet 417058204: 350ci, 185hp, at, ac, fd
Rochester Q-jet 417058206: 350ci, 185hp, at, ac, sd
Rochester Q-jet 417058210: 350ci, 220hp, at
Rochester Q-jet 417058211: 350ci, 220hp, mt
Rochester Q-jet 417058228: 350ci, 220hp, at, ac
Rochester Q-jet 417058502: 350ci, 175hp, at, ce
Rochester O-jet 417058504: 350ci, 175hp, at, ac, ce
Rochester Q-jet 417058582: 350ci, 175hp, at, ha
Rochester Q-jet 417058584: 350ci, 175hp, at, ac, ha
Distributor: 1103285: 350ci, 175hp, ce 1103337: 350ci, 185hp, mt
1103291: 350ci, 220hp 1103353: 350ci, 185hp, at
Alternator: 1102474: 350ci, acor rd ep 1102908: 350ci, ac or rd, Ip
1102484: 350ci
Abbreviations: at=automatic transmission, ce=california emissions,
ci=cubic inch, ep=earty production, fd=first design, ha=high altitude,
hp=horsepower, Ip=late production, mt=manual transmission, rd=rear
defogger, sd=second design.
1978 FACTS
« Chevrolet marked the Corvette's twenty-fifth year by introducing the most
extensively redesigned Corvette since the 1968 model. New "fastback'
rear end styling featured a large rear window, but not a hatchback. The
change created significantly more luggage space behind the seats.
* The 1978 interior was redesigned significantly. The speedometer and
tachometer were redone in a more square, vertical mode. A giove box was
added. inner door panels were completely new and featured screwed-on
arm rests instead of the molded-in style common to Corvettes since 1965.
"25th Anniversary” emblems appeared exclusively on 1978 models.
Wider 60-series tires became available as a 1978 Corvette option and
required fender trimming at the Corvette assembly plant for clearance.
» The Corvette was honored as the pace car for the 1878 Indy 500 race.
To commemorate the event, Chevrolet built limited edition Corvettes with
their own vehicle identification number sequence. Initially, they were to
have two-tone silver paint with red striping, special Goodyear tires with
"Corvette" sidewall letters, and a build quantity of 300. The special tires
were eliminated and the quantity became at least one for each Chevrolet
dealer. The final build quantity released by Chevroletwas 6,502; however,
other quantities have been published and some question remains.
«The "Silver Anniversary” paint option consisted of two-tone silver, lighter
silver upper surface and darker silver lower surface, divided by silver
striping. Sport mirrors and aluminum wheels were required.
70
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Chief Steward ‘Tom Binford poses with 1978 Corvette Pace Car.
BU mE ard dR am iE
1978 OPTIONS
RPO# DESCRIPTION QTY RETAILS
1YZ87 Base Corvette Sport Coupe … ....40,274 $9,351.89
1YZ87/78 Limited Edition Corvette (pace car) .. ......0,202 13,653.21
A31 Power Windows carences 36,931 130.00
AU3 Power Door LOCKS .................—.....e=eeev.e00.. 12,187 120.00
B2Z Silver Anniversary Paint... 15,283 399.00
CC1 Removabie Glass Roof Panels 972 349.00
C49 Rear Window Defogger .....................—....- 30,912 35.00
C60 Air Conditioning sers 37,638 605.00
D35 Sport MIPrors ...............e.-—..-———eecemreiconenene 38,405 40.00
FE7 Gymkhana Suspension re 12,590 41.00
G95 Optional Rear Axie Ratio .............................. 382 15.00
K30 Cruise COntrol ....................—.——me.onenineo e. 31,608 99.00
L82 350ci, 220hp Engine ............................. 12,739 525.00
M21 4-Speed Manual Trans, close ratio ............ 3,385 0.00
MX1 Automatic Transmission 38,614 0.00
NAG High Altitude Emission Equipment................ — 33..00
N37 Tilt-Telescopic Steering Column .............. 37,858 175.00
QBS White Letter SBR Tires, P255/60R15 ...... 18,296 216.32
QGR White Letter SBR Tires, P225/70R15 ...... 26,203 51.00
UA1 Heavy Duty Battery ......................e...e...e.e. 28,243 18.00
UM2 AM-FM Radio, stereo with 8-track tape … 20,899 419.00
UP6 AM-FM Radio, stereo with CB ................... 7,138 638.00
US8 AM-FM Radio, stereo .................——... 10,189 286.00
U69 AM-FM Radio.….....…..…...…..….….....crcrereareseenvens 2,057 199.00
U75 Power Antenna rer EEE 23,069 49.00
U81 Dual Rear Speakers e 12,340 49.00
YF5 California Emission Certification ................... — 75.00
Y J8 Aluminum Wheels (4) ............................ 28,008 340.00
ZN1 Trailer Package ................e........e.e2ieeme 972 89.00
ZX2 Convenience Group .........................—...... 37,222 84.00
* A 350ci, 185hp engine, 4-speed wide-ratio manual transmission, T-tops,
and leather interior trim were included in the base price.
* ZX2 included dome light delay, headlight warning buzzer, underhood
light, iow fuel warning light, interior courtesy lights, floor mats, intermittent
wipers, and right side visor mirror.
* Pace car replica included A31, AU3, CC1, C49, C60, D35, N37, QBS,
UA1, UM2, U75, U81, YJ8 (red accent), and ZX2. Other options available
at normal prices except UP6 substitution for UM2 at $170.00.
* Manual transmission and/or L82 not available California or high altitude.
1978 COLORS
CODE EXTERIOR QTY WHEELS INTERIORS
10 Classic White................ 4150 Silver Bk-Db-Dbr-Lb-O-M-R
13 Silver .............e...e.wm... 3,232 Silver Bk-Db-M-R
13 Silver Anniversary .....15,283 Silver Bk-O-R
19 Black ................eereucoo. 11,075 Silver Bk-Lb-M-O-R
26 Corvette Light Blue ...... 1,960 Silver Db
52 Corvette Yellow .. ..1,243 Silver Bk-Dbr-O
59 Corvette Light Beige ... 1,686 Silver Bk-Db-Dbr-Lb-M
72 Corvette Red ............... 2,074 Silver Bk-Lb-O-R
82 Corvette Mahogany .....2,121 Silver Bk-Dbr-Lb-M-O
83 Corvette Dark Blue ...... 2,084 Silver Db-Lb-O
89 Corvette Dark Brown ... 1,991 Silver Dbr-Lb-O
« Suggested interiors shown. Additional combinations were possible.
« The 11,075 quantity for code 19 black included 6,502 Pace Cars.
* Paint quantities exceed actual units sold. Sixteen units had primer oniy;
additional excess units may be due to pilot builds not sold.
interior Codes: 12C=0/C, 122=0/L, 15C=8v/C, 152=8Sv/L, 19C=Bk/C,
192=-Bk/L, 29C0=Db/C, 292=Db/L, 59C=Lb/C, 592=Lb/L, 69C=Dbr/C,
692=Dbr/L, 72C=R/C, 722=R/L, 76C=M/C, 762=M/L.
Abbreviations: Bk=Black, C=Cloth, Db=Dark Blue, Dbr=Dark Brown,
=L eather, Lb=Light Beige, M=Mahogany, O=Oyster, R=Red, Sv=Silver.
71
41
| BLACK BOOK ORDER FORM |
Send copies of the
Corvette Black Book 1953-1992
@ $11.985 each $ ____
Ohio residents add .72 sales tax
Postage/hard shipping container 3.00
Check or money order enclosed $
Name
Street
City State—.— — Zip
Mail Order To: Michael Bruce Associates, Inc.
Post Office Box 396
Powell, Ohio 43065
BLACK BOOK ORDER FORM |
Send copies of the
Corvette Black Book 1953-1992
O $11.95 each $
Ohio residents add .72 sales tax
Postage/hard shipping container 3.00
Check or money order enclosed $
Name
Street
City State Zip
Mail Order To: Michael Bruce Associates, Inc.
Post Office Box 396
Powell, Ohio 43065
The Silver Anniversary Corvette
encompasses two major milestones:
Chevrolet alone, of all the American
car makers, has been building and
refining a 2-seater, American sports
car for twenty-five years. And, more
than a half-million have been pur-
chased by an American public that
still appreciates cars for people who
like to drive.
The Silver Anniversary Corvette
offers more comfort and con-
venience, a larger fuel tank and
an increase in luggage capacity.
There's also an entirely new rear end
treatment that separates the 1978
Corvette from its predecessors. The
new rear window not only allows for
a cleaner styling profile, it also
increases driver rear visibility and
allows more room for traveling gear.
A roll-out security shade covers the
luggage space to conceal possessions
from casual observance. The front
seat design makes the rear compart-
ment more accessible and provision
has been made for inside storage of
Corvette’s removable roof panels.
Also new for 1978 is a larger,
plastic-lined fuel cell the capacity of
which has been increased from 17 to
24 gallons, thereby increasing
Corvette's cruising range.
A restyled instrument panel,
featuring one-piece rectangular,
face-mounted instrument cluster and
round instruments, provides new
appearance and serviceability. Both
transmissions have been refined. A
three-speed automatic unit 1s now
available and a 4-speed gearbox
is standard.
Finally, in observance of
Corvette’s 25th year, highly-styled
Silver Anniversary emblems are
mounted front and rear.
1978 Corvette from Chevrolet.
The only one.
wy
1978 CORVETTE
Corvette Coupe
Corvette Model No.
Coupe............... 1YZ87
Index
New Corvette Features for 1978 ............. 2-3 Colorand Trim Selections . .................. 9
Corvette Features Continued for 1978 ........ 4-5 Available Options . ....................... 10
Corvette Coupe Appearance Features . ......... 6 PowerTeams ........................... 11
Corvette Coupe 25th Anniversary Option ....... 7 Body/Chassis Features ...................... 12
Interior Features .......................... 8 Dimensions/Specifications ................... 13
Also see Value Features section for additional details.
Corvette / 1
See Dealer Order Guide for latest availabie information.
= New exterior look with fastback
roof design
m New 25th anniversary paint
available
a New interior styling with new
door. floor. and rear compartment
trim
= Redesigned instrument panei
= Increased cargo space
n New luggage security shade
= New AM/FM Stereo CB
40-channei Radio with power
antenna available. The power-
operated antenna automatically
extends to its full 31-inch height
when radio is switched on and
3-position antenna switch is in the
UP position. It automatically
lowers when the radio or ignition
is turned off.
w New P225/60R15 white
lettered aramid-fiber-belted
radial ply tires available
= New fuil glass removable root
panels available
# Power door iocks available
= Dual rear speakers available
= New choice of 10 exterior
colors (5 new for 78)
= Larger 24-galion fuel capacity
a New compact spare tire
= Improved performance on the
available 350 cu. in. V8 (RPO
L82)
a New chassis refinements
= New convenient single-loop
seat belts
|
2 /Corvette
"e a,
Available AM/FM Stereo Citizens Band Radio
E
ч
New Luggage Security Shade
fo Si
[em or et ed
SRN zen
A
| dar
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EEN o To
Tada km!
IT
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Power Antenna Available
Corvette
ne зао и
EX В ==. A
A
23th Anniversary Emblem
a
Corvette 3
STANDARD CORVETTE
VALUE FEATURES
CONTINUED FOR 1976
Power Teams
a 350 cu. in. V8
a Automatic transmission or
4-speed fuliy synchronized
transmission
Engine/ Chassis
» High Energy Ignition system
« Early Fuel Evaporation systems
on all engines for quick warm-up
= Steel-belted radial ply tires
m Power disc brakes at all four
wheels
m Positraction rear axle
= Fully independent four-wheel
suspension system
= Power steering
s Temperature-controlled engine
radiator fan
« Exhaust valve rotators on ali
engines
wu Delco Freedom battery never
needs water. Sealed side terminals
help prevent corrosion buildup
s Delcotron generator with built-
in solid-state regulator
a Hydraulic valve lifters
m Large-diameter front stabilizer
bar
= Wide 15 x 8 wheels
= Long recommended service
intervals for oil change, oil filter,
spark plugs, chassis lubrication
and automatic transmission fluid
Body
= Tinted glass in all windows
a Heavy-gage frame structure
with corrosion-resistant coating
= Energy-absorbing honeycomb
cushion front bumper system
= Energy-absorbing rear bumper
system with twin hydraulic
cylinders
w Hide-A-Way windshield wipers
with integral washers in wiper
arms
a Wide outside rearview mirror
= Power-operated retractable
headlights
» High-rise front fenders with
functional louvers
» Flow-through ventilation system
s Corrosion-resistant steel-
reinforced fiberglass body with
partial steel underbody
= Built-in anti-theft audio alarm
system control switch integral
with driver's door lock
Interior
m Special Custom Interior with
choice of cloth and leather or
ail-leather seating surfaces
= Day/night inside rearview
mirror
« Tapered high-back bucket seats
m Special sport-styled 4-spoke
steering wheel
e Aircraft-style center console
a Tachometer (7000 rpm)
m Electric clock
a Ammeter, oil pressure, fuel and
temperature gages
= Separate trip odometer
= Console-mounted parking
brake control
Cut-pile carpeting
Swiveling sun visors
Color-keyed seat belts
Folding seat back latches
Roof courtesy light with
automatic door switches
« Rear compartment stowage
wells
4 /Corvette
MA
Tinted Glass in ail Windows
7h
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Disc Brake at ail Four Wheels
Corvette
CORVETTE
Coupe
Black-finished
windshield molding
. Bright roof
o, Hide A-Way drip molding
windshield wipers with integral
washers in wiper arms
Bright recessed
25th Anniversary ;
design crossed flag emblems outside door handles
on front end,
and fuel filler door Bright key locks
(LH controls
theft alarm)
Power-operated
retractable headlights
P225/70R-15 steel-belted
radial ply blackwall tires
on 15” x 87 wheels
Removabie roof panels
Fastback roof
design
Body-color
urethane front and rear
bumper covers with black
bumper guard surfaces
Bright wheel
trim rings and
center caps
Black sill
panel molding with
bright upper rib
Available Aluminum
Wheel (RPO YI8)
6/Corvette
i
CORVETTE
25th Anniversary Paint (RPO B27)
Color-keyed Dual
Sport Mirrors (RPO D35—LH Remote
Control, RH Manual)
Distinctive
Two-Tone Paint Treatment
and Pin Striping
Aluminum Wheels (RPO YJ8)
25th Anniversary Paint (RPO B27)
Distinctive Silver finish accented with Dark Silver Metallic body side color.
Aluminum Wheeis (RPO YI8) and Color-Keyed Dual Sport Mirrors (RPO D35)
are required extra cost equipment. See page 9 for exterior colors.
Required Aluminum
Wheel (RPO YJ8)
Corvette /7
Corvette Cloth-and-Leather Interior
INTERIOR FEATURES
Four-spoke steering wheel
— INTERIOR FEA
- .F "
Corvette Instrument Panel and Console
— |
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Tapered high-back bucket seats
Color-keyed seat belts
Color-keyed steering wheel and column
Column-mounted lever for turn signal and headlight beam
Cigarette lighter
Electric clock
Deep-twist floor and stowage area carpet
Dav/night rearview mirror bonded to windshield glass
Passenger side coat hook
Swiveling sun visors
Overhead courtesy light
Rear compartment glove compartment
Door trim with carpeted lower panels
Parking brake lever mounted between seats
Electronic tachometer
140 MPH speedometer with trip odometer
Voltmeter, temperature, fuel and oil pressure gages
S—Standard
|
8 /Corvette
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1978 CORVETTE
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= wn. Light Beige, Red
:>2n), Mahogany, Qysier
INTERIOR TRIMS
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Corvette Leather. Black.
Dark Blue, Dark Brown,
Uiont Belge (snowni Red,
‘лепосапу. Оубтег
25TH ANNIVERSARY PAINT (RPO 827
13—Siiver with Dark Silver
Metallic body side
color.
COLOR AND TRIM COMBINATIONS
-
COLOR SELECTIONS
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CORVETTE EXTERIOR COLORS
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peciel ZSth Anniversary T..--
*59--Light Beige
10—Ciassic White
12—Red
13—Silver
19—5'ack "82—Mahoaanv Metallic
"28—Light Biue *83—Dark Blue Metallic
52— Yellow
*89—Dark Brown Metaili-
*New Color for 1978
CORVETTE COUPE BUCKET SEAT INTERIORS**
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EXTERIOR COLOR CODE
CLASSIC WHITE 10 X X X X X
“7 SILVER 13 X X X
Bl sLacx 19 x | X X X
CORVETTE LIGHT 8LUE 26 X X
CORVETTE YELLOW 52 X X X
CORVETTE LIGHT BEIGE 59 X X X X X X
SEN CORVETTE RED 72 X X X X
M CORVETTE MAHOGANY METALLIC 82 X X X X
Ш CORVETTE DARK BLUE METALLIC 83 X x x X X
SAN CORVETTE DARK BROWN METALLIC 89 X X X X
“Choice of all-ieather seat surfaces or cloth-and-leather seat surfaces.
See Deaier Order Guide for latest available information.
Corvette /9
RPO
APPEARANCE FEATURES Number
25th Anniversary Paint (Requires Y J8 € D35) B2Z
Wheels:
Cast aluminum Y J8
COMFORT/CONVENIENCE
Air Conditioning:
Four Season C60
Convenience Group:
Includes delayed dome and courtesy lights, visor mirror, headlight-on-warning,
low fuel indicator, engine compartment light. floor mats, intermittent
windshield wipers ZX2
Defogger, Rear Windows:
Electro-Clear C49
Door Lock System, Power AU3
Mirrors, Sport:
LH remote-control. RH manual D35
Radio Equipment:
Includes 30” fixed height rear antenna (except UP6)
AM/FM radio 769
AM/FM Stereo radio U58
AM/FM Stereo radio with stereo tape system UM2
AM/FM Stereo Citizens Band 40-channel radio with power antenna UP6
Power antenna (not available with UP6) U75
Rear speakers, dual U81
Roof Panels, Removable Glass
Twin removable tinted glass panels CCI
Speed Control, Cruise-Master :
Requires Automatic Transmission K30
Steering Wheel, Tilt-Telescopic:
Includes leather-wrapped sport wheel N37
Windows, Power A31
ENGINE / TRANSMISSIONS
Emission Equipment:
See Power Teams Availability
Standard Emission Svstem NA?
California Emission Certification YFS
High Altitude Emission Equipment NA6
Engine:
350 cu. in. V8. See Power Teams for availability 1.82
Transmissions:
4-Speed Manual —Close Ratio (requires L82 engine) M21
Automatic MX1
CHASSIS/MECHANICAL
Axies:
Highway ratio 95
Battery, Heavy-Duty Freedom UA1
Chassis Equipment —
Trailering. Includes heavy duty cooling, standard engine, Automatic
Transmission and Gymkhana suspension ZN]
Suspension Equipment:
Gymkhana, Front and Rear FE7
Tires:
P225/70 R-15 Steel-belted radial ply white lettered QGR
P255/60 R-15 Aramid fabric-belted radial piv white lettered QBS
10/Corvette
{+
POWER TEAMS
Standard 350 cu. in. V8 Engine
ALL STATES EXCEPT CALIFORNIA
Engine
Availability Transmissions / Rear Axle Ratios
Automatic Transmission
4-Speed
Power 4-Speed Manual Below 4,000 Ft. Ring Gear
Engines Ratinet Coupe Manual (КРО М21)++ | 4,000 Ft. and Above Size
350 cu, in, V8 185/1754 STD. 3.36 NA 3.08 3.55 834”
350 cu. in. Y8e 220 RPO L82 3.70/3,36* 3,70 3.55 NA 834”
CALIFORNIA ONLY |
| 350 cu. in. V8 | 175 | STD. I NA | NA | 355 | NA | 8%" |
*S.A.E. net horsepower as installed. T+4-Speed Close-Ratio Manual. *Available Highway Ratio (RPO G95).
ARating with High Altitude Emission Equipment. STID.—Standard. NA— Not Available.
e Not available in the following areas: States of California, Maryland, Florida, Oregon and Washington: Cities of Boston, Mass.;
Grand Rapids, Mich.; Des Plaines, [I!.; Barrington, Ill. and all of Cook County, III. including Chicago.
SPECIAL NOTE: California Emission Equipment required for registration in California, In other States, High Altitude
Emission Equipment may be required in areas 4,000 feet or more above sea level.
See EPA section for mileage estimates.
Corvette/11
BODY/CHASSIS
FEATURES
Body Structure & Features
a Magic-Mirror acrylic finish
® Fiberglass reinforced plastic
body
= Heavy-gage frame structure
with corrosion-resistant coating
= Corrosion-resistant steel-
reinforced fiberglass body
© Energy-absorbing honeycomb
cushion front bumper system
® Energy-absorbing rear bumper
system with twin hydraulic
cylinders
« Double-panel door construction
» Protective fiberglass fenders,
front and rear
= Tinted glass
Anti-theft audio alarm system
a Luggage area security shade
= Single lever roof panel locks
= Flow-through ventilation system
= Hide-A-Way dual-speed electric
windshield wipers
Chassis Features
« Power steering
m Power disc brakes at all four
wheels
= Automatic transmission Or
4-speed fully synchronized
manual transmission
= Delcotron generator with
buiit-in solid-state regulator
= High Energy Ignition system
® Coolant recovery system
» Exhaust valve rotators on all
engines
® Hydraulic valve lifters
# Long recommended service
intervals for oil change, oil filter.
spark plugs, chassis lubrication
and automatic transmission fluid
» Delco Freedom battery never
needs water. Sealed side terminals
help prevent corrosion buildup
a Front stabilizer bar
« Positraction rear axle
= Forward-mounted recirculating
ball steering gear and linkage
a Fully independent front and
rear suspension
= Temperature-controiled engine
radiator fan
s Farly Fuel Evaporation system
on all engines to hasten engine
warm-up
® Tires incorporate tread wear
indicator
" Direct double-acting sealed-umit
hydraulic shock absorbers
w P225/70R-15B steel-belted
radial ply blackwall tires and
15” x 8” wheels
12/Corvette
EXTERIOR DIMENSIONS
DIMENSIONS/
SPECIFICATIONS
Wheelbase 98.0
Length (overall) 185.2
Width (overall) 69.0
Height (loaded) 48.0
Front tread 58.7
Rear tread 59.5
Minimum ground clearance 4.3
INTERIOR ROOMINESS
Head room 36.2
Leg room 42.1
Hip room 49.9
Shoulder room 47.5
LUGGAGE COMPARTMENT
Useable luggage space (cu. ft.) 8.4
FUEL TANK CAPACITY (gallons) 24.0
CURB WEIGHT (pounds) 3529
Corvette /13
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CORVETTE
The Corvette program for 1978 embodies the most extemsive change since the
introduction of the current series in 1968. A new fastback roofline gives the car an
even smoother more dynamic appearance, increased cargo space and improved
rear visibility. The cockpit has an all new look.
MODELS —
The 2-Door Aero-Coupe with lift-out roof panels continues as the single model
offering.
APPEARANCE —
+ New fastback styling replaces notchback configuration.
+ Front and rear emblems commemorate Corvette’s twenty-fifth anniversary.
+ New padded instrument panel and front-mounted rectangular cluster.
+ Windshield wiper and washer controls mounted on instrument panel.
+ Built-in lockable glove box replaces map pocket.
+ New single loop type seat belts have retractors concealed in roof sail area.
+ New cover conceals contents of luggage area.
+ Theft alarm circuit expanded to monitor both lift-out roof panels.
+ 10 Exterior colors — 6 New
7 Interior colors — 4 New
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CHASSIS —
+ New 24 gallon bladder fuel cell increases fuel capacity 41 percent.
+ Narrow P195/80D15 bias ply spare tire on 15 x 5 steel wheel {temporary use
only).
+ New wider rear leaf spring assembly to reduce spring stress.
POWER TRAINS
+ Improved induction and exhaust systems give greater performance for op-
tional L-82 engine.
+ Higher numerical starting ratio for 4-speed transmission with standard engine
gives increased low end performance.
+ Turbo Hydra-matic with optional L-82 engine features reduced internal inertia.
OPTIONS
+ Convenience package expanded to include intermittent windshield wipers and
carpeted floor mats.
+ New P255/60R15 white letter radial ply tires with increased “footprint”.
+ AM-FM Stereo CB radio with tri-band power antenna.
+ Power antenna optional for non-CB radios.
+ Dual rear speakers optional for stereo radios.
+ Glass roof panels (interim)
+ Power door locks {interim)
—
The Corvette interior is re-designed with a distinct feeling of spaciousness achieved
with the new trim and the large sloping rear window.
Door trim is now the cut and sew design, trimmed in soft expanded vinyl with cut
pile carpet and a map pocket on the lower scuff area. When the cloth seat trim is
specified, this material is used in the center area of the door pad for a coordinated
interior appearance. The armrest is now a separate applied design with a horizontal
door lock button located in its forward surface.
Seats are continued from 1977 with deep side bolsters of genuine leather. Between
the bolsters, the seating area is either rich grain leather or body cloth with a fine rib
pattern.
Floor covering is cut pile carpet and now extends up the sides of the center console
and the underdash side kick panels, replacing the plastic trim panels used in these
locations previously. The floor carpet has also been extended up and over the door
sill area and is retained by a siender bright molding. The wide, heavily ribbed sill
plate is no longer used.
Seat belts are now the single loop type. Mini-reel retractors are concealed in the
roof sail area, rather than exposed in the luggage area as on the 1977 model.
8-3
The Corvette luggage area is larger and more versatile by virtue of the new fastback
roofline. Usable luggage capacity has been increased from 7.8 to 8.4 cubic feet. The
new roofline makes the entire storage area more accessible as well.
A single formed cut pile carpet covers the luggage area floor, wheelhouses and
underbody riser, reducing the number of bound edges, for a cleaner appearance.
Luggage area insulation has been expanded to include complete coverages of the
rear floors and sidewails. |
Because the storage area is clearly visible thorugh the large rear glass, a black
luggage security shade is standard equipment. Mounted at the rear of the com-
partment on a spring loaded roller, the shade may be pulled forward and hooked to
the wheelhouses to conceal articles in the luggage area.
8-4
The instrument pane! has been redesigned for 1978. “Instrument panel” refers to
the entire panel area excepting the center instrument console, which was new for
1977.
The new one-piece panel is fully padded, with a redesigned rectangular instrument
cluster in front of the driver and a glove box added on the passenger side. The upper
area of the new pad and the windshield glass mask line are higher to conceal the
windshield wiper opening. Forward of the pad, the panel top surface is finished in
zero gloss black for all trims to eliminate reflection.
The new instrument cluster houses the large speedometer and tach. Between these
two instruments are indicator lamps for brake warning, headlamp beams and turn
signals. The cluster is front mounted, so it is quite easy to remove the entire cluster
or lens for service. A printed circuit is now used for improved reliability.
On the passenger side, a built-in glove box replaces the map pocket previously used.
The new glove box is lockable and includes an automatic lamp. A snap-in-tape
storage unit is provided in the glove box when the tape player radio is ordered.
The windshield wiper and washer control has been moved from the steering column
stalk to a position on the instrument panel, to the left of the cluster. This new, more
conventional location for the wiper control makes it possible to offer an intermittent
wiper option and to simplify the steering column assembly.
The steering column stalk will still control the turn signals and headlamp beams.
The stalk is now slightly curved to be closer to the steering wheel rim for easier use.
Also, when factory installed cruise control is used, the control button is now in this
stalk in common with the other car lines, rather than in the tilt wheel lever as before
— so the tilt-tele wheel option is no longer required for cruise control.
Other new body features add to the value of the '78 Corvette.
Simplified controls are new for each liftout roof panel. A single lever controls each
panel latch system, replacing the dual levers on past models.
The standard theft alarm system has been extended to monitor the roof panels.
The keylock control for the alarm system, formerly in the left front fender, is integral
with the LH door lock unit. The alarm horn has been moved from the rear quarter
area to under the hood for greater security.
The weatherstrip at the rear of the door glass has been redesigned to improve seal-
ing and reduce wind noise.
As an appearance improvement, front and rear bumper covers are mounted to the
body panels with redesigned clips for continuous retention to reduce “puekering”.
8-6
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POWER TRAINS
AXLE RATIO
ENGINE TRANSMISSION | arrow | ABOVE
4000 FEET &
1000 FEET | CALIFORNIA
4-BARREL CARBURETOR
STANDARD TURBO HYDRA-MATIC | 3.08 3.55
5.7 LITRE V-8 1350 CIDi | 4 <PEED (2.64 LOW) 3.70
SPECIAL PERFORMANCE 13.36 OFF) -
4-BARREL CARBURETOR | 4.SPEED (2.43 LOW) 3.70
RPO 182 TURBO HYDRA-MATIC | 3.55 -
Corvette engine selection for 1978 again consists of standard and special perfor-
mance versions of the 5.7 litre V-8.
The base engine is offered with the Muncie 4-speed manual transmission. First and
second gear ratios are numerically higher than those of the replaced Borg-Warner
unit, providing improved low end performance.
Increased horsepower and torque ratings are achieved for the optional special per-
formance L82 engine as a result of improvements made in the induction and
exhaust systems.
The lighter weight Turbo Hydra-matic transmission used with the L82 engine is bas-
ically the same as that used with the standard engine. This transmission features a
specific torque converter with less internal inertia resuiting in increased perfor-
mance.
For the base engine used above 4000 feet and in California, the rear axle ratio
changes from 3.08 to 3.55:1 giving a better starting ratio and more responsive per-
formance throughout the speed range.
fi
FUEL AND EXHAUST SYSTEM
Performance of the optional L82 engine is significantly improved for 1978. A new
dual snorkel carburetor air inlet system delivers greater amount of cool dense air to
the carburetor. Twin ducts extend from in front of the radiator support where un-
heated air is available, to the air cleaner. For the exhaust system aft of the converter,
large diameter exhaust pipes and tailpipes and lower restriction mufflers measura-
bly reduce exhaust back pressure. Tests to date indicate engine performance gains
of approximately 13 bhp.
Mufflers used with both engines are smaller in section, making it possible to “tuck”
them up tighter to the underbody and, therefore, they are less conspicuous.
Fuel tank capacity is increased from 17 to 24 gailons — a gain of 41%. Assuming
cruising range as the distance you can drive, starting with a full tank and refilling at
five gallons — that's just short of an empty reading on the gauge — usable fuel
capacity has increased from 12 to 19 gallons. That is an increase in cruising range of
nearly 60 percent.
The new fuel tank consists of a tough, pliable polethylane liner in a steel container.
The tank metering unit can now be removed through the filler door in the body — it
Is no longer necessary to drop the tank to service the gauge unit.
Space for the larger tank is made available by revisions to the rear underbody and
use of a smaller spare tire and wheel.
8-8
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CHASSIS FEATURES
A new P255/60R15 {HR60 x 15) white letter tire with aramid fabric belt construction
is added as an option. Compared to the base GR70 tire, the new tire is wider, with an
“aggressive’’ footprint approximately 20% greater. Because of the ‘60° aspect ratio,
tire size is increased Пот °С’ to ‘H’ to maintain ground clearance. According to the
aramid tire cord, “pound for pound it's stronger than steel.” it's also more flexible,
so ride quality is superior to the base steel belted tire.
The spare tire is now a special P195/80D15 temporary tire on a 15 x 5 wheel. Tire
diameter is specially ground to match that of the road tires in order to avoid damage
to the positraction axle. The tire will be labeled “Temporary Spare” and the wheel
painted a bright color to discourage extended use. The primary reason for adopting
the smaller, lighter temporary spare is to provide additional space for the larger fuel
tank.
Rear spring width is increased from 2-1/4 inches to 2-1/2 inches to reduce stress
under the additional weight of the larger fuel tank and its contents when full.
Rear shock absorbers provided in the optional gymkhana package are larger for
1978 to give more effective wheel control.
NEW OPTIONAL EQUIPMENT
The intermittent windshield wiper control is now available optionally for Corvette.
The system operates in the same manner as for the other Chevrolet car lines, and is
available as part of the convenience package. Color keyed floor mats with carpet in-
serts have also been added to this package.
A completely new design for see-through roof paneis has been developed. The outer
surface of each panel is all glass, with a stainless steel outer band similar to a rain
gutter, to protect the glass edge. A die cast carrier, not visible from the outside,
supports the roof attaching hardware and weatherstrip. The laminated glass is sil-
vered to handle the solar load and presents a charcoal silver appearance from the
outside and a blue-green tint from within.
Power door locks, very popular in other car lines, are now available for Corvette.
Control buttons are conveniently positioned on each door trim panel.
The new optional AM-FM-Stereo-CB radio for Corvette is a fuit 40-channei unit with
the transciever unit integrated into the entertainment radio. The CB mike is stowed
on the center console. The power operated automatic tri-band antenna is conven-
tionally located on the rear deck so no tell-tale separate CB antenna is present.
A new power antenna is available as a separate option for use with any entertain-
ment radio. The new unit mounts on the rear deck and is fully automatic — raising
when the radio is turned on and retracting fully when the radio is turned off.
The fixed antenna mast for 1978 has a higher bending strength to reduce damage by
vandals and car wash equipment.
Two of these options — the glass roof panels, and the door locks are late entries in
the program and availability may be delayed until after announcement,
A dealer installed cruise control system has been designed for automatic transmis-
sion models. The control is mounted to the lower edge of the instrument panel,
similar to other Chevrolet models. And, to expand Corvette’s trailer towing
capabilities, a load distributing platform has been designed which will allow pulling
a medium size trailer with a loaded weight up to 4,000 pounds and a tongue load up
to 500 pounds. As with other car lines, only the new platform and wiring harness
will be available through Chevrolet. The actual hitch assemblies, safety chains and
other necessary equipment must be obtained locally. The extra light duty trailer
hitch previously offered for pulling trailers with a loaded weight of up to 1,000
pounds will also be continued.
8-10
I
Е BASIC SIZE COMPARISON
R CORVETTE
MODEL 2-DR. SPORT COUPE
|| Model Year . . .............. 1978 1977
N Engine .................. 350 v8 350 v8
à Transmission . . . ............ 4-Speed 4-Speed
Wheelbase . ............... 98.0 98.0
|| Tread ............... Front 58.7 58.7
Rear 59.5 59.5
| | Exterior ............ Length 185.2 185.2
i Width 69.0 69.0
I Height * 48.0
Interior
Head Room ......... Front 36.2 36.2
8 LegRoom ........... Front 42.1 42.1
Shoulder Room ........ Front 47.5 47.9
Е HipRoom ........... Front 49.9 48.8
1
Usable Luggage Cap. (Cu.Ft.) ..... 8.4 7.8
8 Glass Area (Sq. In.)
Windshield... .............., 793.5 977.4
E SideGlass ............... 800.8 800.8
3 Back Glass . .............. 1425.3 392.5
TOTAL 3019.6 2170.7
* To be provided.
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8-11
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WEIGHT COMPARISON
DESCRIPTION
Body .....o.orerdoerneooro
Body Mounting ...... e. ...
TOTAL BODY
Frame ......oeoesosoocrusxrroo
Front Suspension ............
Rear Suspension (Positraction)
Brakes (Power) .............
Engine (350 Cubic Inch) ........
Transmission and Clutch (4-Speed)*
Fueland Exhaust ............
Steering (Power) . . ...........
Wheels and Tires (P225/70R 15: 15 x 8)
Front End Sheet Metal .........
Chassis Electrical ............
Radiator and Grille ...........
FrontBumpers .............
RearBumpers ..............
Tools and Miscellaneous ........
TOTAL CHASSIS
TSHIPPING WEIGHT
Front ....ñ..ooerceceaoooaoooo
Веаг. . . .. .. . 21 4 4 1 4 0 1 1 a Là
TOTAL
Gasoline (14.0 Gallons) . . . . .. Cee
Gasoline (21.0Gallons) . ........
{(*) CURB WEIGHT
Front ...................
Rear .....e.o.omrorceoedaoooo
TOTAL
tCoolant to capacity and 3 gallons gasoline included in Shipping Weight.
*Add weight for CBC automatic transmission is 36 Ibs. (24 front, 12 rear)
8-12
COUPE
1YZ87 1YZ37
1978 1977
751 753
13 13
764 766
238 245
113 113
269 265
208 208
649 649
123 123
160 170
88 88
285 305
140 140
115 115
33 33
106 106
78 78
32 32
2637 2670
1707 1710
1694 1726
3401 3436
— 36
128 -
1679 1690
1850 1832
3529 3522
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POWER TRAINS
49 STATES
MODEL REAR AXLE RATIO (:1) R.G. IW.
ENGINE (Base 8: Opt TRANSMISSION BELOW 1219M ABOVE SIZE CLASS
Refer to Eng) (4000 FT.) 1219M ¡mm tin.) [kg (Ibs.)
BASE OPTION |!(4000 FT.)
5.7 Litre-V8 АН 4-Spd. Man. (M20) 285 Low — Base 3.36 — — 213 1816
(350 CID) (Base) CBC “350’ (M38) — Opt 3.08 — 3.55 (8-3/8) | (4000)
4-Bbl. Carb.
RPO L48
HP — %
9.7 Litre-V8 All 4-Spd. Man. {M20} 2.64 Low — Base 3.70 3.36 — 213 1816
(350 CID) (Opt) 4-Spd. Man. (M21) 2.43 Low — Opt. 3.70 — — {8-3/8) | (4000)
4-Bbl. Carb. CBC ‘350’ (M38) — Opt. 3.55 — —
ВРО 1.82 *
HP — %
CALIFORNIA
MODEL REAR AXLE RATIO (:1) R.G. i.W.
ENGINE (Base & Opt TRANSMISSION BASE OPT. SIZE |-CLASS
Refer to Eng) mm (in.) | kg {Ibs.)
9.7 Litre-V8 Ali CBC ‘350’ (M38) — Opt. 3.55 _ 213 1816
(350 CID) (Base) (8-3/8) | (4000)
4-Bbl. Carb.
RPO Las
HP — %
E B E = . hs м я "т
р a a
% — To be determined.
*
Because of local noise standards, L82 not available in Maryland, Florida, Oregon
and Washington states, Boston, Mass., Grand Rapids, Mich., and DesPlaines, Bar-
rington and Cook County, illinois.
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