2261, 2262 - Performer RPM Hydraulic Roller

2261, 2262 - Performer RPM Hydraulic Roller
PERFORMER RPM HYDRAULIC ROLLER CAMSHAFTS
For 1967-Later 396-502 C.I.D. Chevrolet V8 Engines
Catalog # 2261, 2262
®
INSTALLATION INSTRUCTIONS
PLEASE study these instructions carefully before beginning this installation. Most installations can be accomplished with common tools and
procedures. However, you should be familiar with and comfortable working on your vehicle. If you do not feel comfortable performing this installation,
it is recommended to have the installation completed by a qualified mechanic. If you have any questions, please call our Technical Hotline at:
1-800-416-8628, 7:00 am - 5:00 pm, Pacific Standard Time, Monday through Friday or e-mail us at Edelbrock@Edelbrock.com.
IMPORTANT NOTE: Proper installation is the responsibility of the installer. Improper installation
will void your warranty and may result in poor performance and engine or vehicle damage.
DESCRIPTION: Edelbrock Performer RPM hydraulic roller camshafts are ground specifically for use with the corresponding Performer RPM manifold.
The Performer RPM manifold #7161 or RPM Air-Gap #7561 (for oval port heads), or Performer RPM #7163 or RPM Air-Gap #7563 (for rectangular port
heads), and Performer RPM Hydraulic Roller camshaft #2261 (1965-1989 Mark IV and 1989-1995 Mark V blocks) or 2262 (1996-Up Mark VI blocks
with camshaft thrust plate) are designed to work as a team to give you better driveability and performance. They are dyno-matched and street-proven.
For best results, use the Edelbrock manifold/camshaft package with the recommended carburetor and headers. Performer RPM camshafts are
designed for use with modified or high performance cylinder heads and valve train components only. Screw-in studs, adjustable rocker arms, and
matching valve springs must be used.
IMPORTANT: This instruction sheet provides general installation guidelines which can affect your warranty. Read it carefully. It is not our intent
to cover each detail of installation here; a step-by-step procedure manual would be far too lengthy. We want to caution you that installing a
camshaft is a complicated procedure that requires a good general knowledge of automotive engines. If you are not confident that you can
complete the camshaft installation successfully, we suggest you consider having it installed by a qualified mechanic. Improper installation will
result in LOW MILEAGE, POOR PERFORMANCE, COSTLY REINSTALLATION, and ENGINE DAMAGE.
TO AVOID THESE PROBLEMS, YOU MUST DO THE FOLLOWING:
1. Carefully study and understand all instructions.
2. Examine the camshaft for possible shipping damage (if damaged contact your dealer immediately).
KIT CONTENTS:
1
Camshaft
1
Assembly Lube
PREPARATION CHECKLIST
TOOLS AND EQUIPMENT FOR INSTALLATION:
Box and open end wrenches
Socket set
Distributor wrench
Pliers (channel locks & hose clamp)
Screw drivers (regular and phillips)
Torque wrench
Hammer
Gasket scraper or putty knife
Timing light & vacuum gauge
Rags
Water bucket
Harmonic balancer puller
Gear puller for crankshaft sprocket
Chalk , paper and pencil
Masking tape (for tagging hoses and electrical wires)
HARDWARE AND PARTS REQUIRED:
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Edelbrock Roller Lifters #97443 or equivalent
Push Rods designed for roller lifters
Camshaft thrust button (For #2261)
Gaskets - Intake #7203 (oval port) or #7202 (rect. port),
Valve Cover #7580
Pipe plugs, if needed
Edelbrock Gasgacinch #9300
RTV Silicone sealer
Catalog #2261, #2262
Rev. 9/06 - RS/mc
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Page 1 of 4
Engine oil and filter
Radiator coolant
Edelbrock True Rolling Timing Chain Set #7810
Front cover oil seal, OEM or equivalent
Valve Springs with a closed pressure of 120-130, open pressure
of 320-340 and a max lift of .700” (Note: Edelbrock Sure Seat
Valve Springs #5762 are not recommended.)
©2006 Edelbrock Corporation
Brochure #63-0260
IMPORTANT NOTES AFFECTING YOUR WARRANTY. PLEASE READ BEFORE CONTINUING THIS INSTALLATION!
CAM LOBE DAMAGE: Cam lobe wear is almost non-existent unless
mismatched parts are used or installation of the cam and lifters is done
improperly. Cam damage can result from the timing gear loosening due
to improper torque on bolts. Bolts holding gear to camshaft should be
torqued carefully and a locking compound applied to threads of bolts.
Before installing your new camshaft, check the gear drive on the
distributor and oil pump for any signs of wear. If worn, be sure to replace
with a new gear or you may wear out your camshaft prematurely. Highpressure oil pumps are not recommended with Performer RPM hydraulic
roller camshafts. Edelbrock camshafts are designed to be used with
Edelbrock timing chains.
PUSHRODS AND ROCKER ARMS: High performance pushrods and
rocker arms and studs are recommended for this installation. After the
cam is installed and timed correctly (See Figure 2), it will be necessary
to check each pushrod for correct lifter preload.
VALVE SPRINGS (CAUTION REGARDING YOUR WARRANTY):
In order for this Performer RPM roller cam to be covered under ANY
WARRANTY, you MUST use the correct valve springs. Failure to install
the correct valve springs may cause lifters not to follow the cam lobes
and damage engine parts.
CAM GEARS AND CAMSHAFT END PLAY: If cam gear becomes loose,
the cam will slide back in the block, causing the lifters to hit the lobes
next to them and also the cam bearing journals. If the engine is run after
this happens, the bottom of the lifters and the sides of the lobes will
become damaged. Therefore, a thrust button must be used to control
end play. Late model (1996-Up Gen Vi) blocks use a thrust plate and do
not require a thrust button. See Installation Instructions section for end
play specifications.
1.
This camshaft is designed to function with valve springs that
have a closed pressure of 120-130lbs, open pressure of 320340 lbs and a max lift of .700”. Special retainers may be
necessary with your installation for proper spring height. Do
not use rotator type valve springs or retainers for this
application.
TIMING CHAIN: Use Edelbrock Performer-Plus Timing Chain and Gear
Set #7810 or Accu-Drive gear drive #7891 ONLY. Do not use late model
timing chain and gear sets that are designed for emission-controlled
engines. These timing sets are machined in a retarded position and are
not recommended for this camshaft installation. Edelbrock Timing Sets
feature three keyways for specific timing selection.
OPERATING CLEARANCES: When installing a camshaft, it is always
important to check for proper operating clearances, especially when
high performance components are used. Things to look for that can
cause failure and damaged parts are as follows:
Note: Edelbrock Sure Seat Valve Springs #5762 are not
recommended.
LIFTERS: Edelbrock offers a retrofit roller lifter for engines not originally
equipped with roller lifters. Use part #97443. To install your roller lifters,
use fresh clean oil on the lifter and the lifter bore just prior to installing.
The guide bar (high side of tappet) must face the opposite side of block.
See roller lifter instructions for additional information.
1.
Improper valve-to-piston clearance (this should be no less than
0.080").
2.
Rocker arm stud slot clearance (both ends; valve closed and
open).
NOTE: We recommend the use of roller rockers.
3.
Proper valve spring settings. Correct dimensions mean
maximum performance and longer engine life.
REMOVAL OF ENGINE PARTS BEFORE CAMSHAFT INSTALLATION
(Be sure to keep all parts in order)
WARNING! DO NOT REMOVE RADIATOR CAP OR RADIATOR HOSES WHILE ENGINE IS HOT!
IMPORTANT NOTICE: If the air conditioning condenser needs to be removed to provide clearance for camshaft removal, have the system
evacuated by an appropriate repair facility BEFORE starting the installation. The facility can recharge the system after installation.
1.
Disconnect the battery.
6.
2.
Drain radiator coolant. Drain plug will normally be located on lower
right or left side of the radiator facing the engine.
Disconnect all linkage from carburetor such as throttle, throttle
springs, transmission, cruise control and automatic choke.
7.
Tag and remove coil wires and sensor wires.
8.
Tag and remove vacuum lines.
9.
Remove valve covers.
3.
Move fan shroud back and remove fan and spacer from water
pump. On air conditioned vehicles, remove bolt, lower idler pulley
and compressor-to- water pump mount. Disconnect hoses and
brackets. Most vehicles will require radiator removal prior to cam
removal. Remove water pump.
4.
Remove radiator and air conditioning condenser if so equipped. In
some cases, the front grille may have to be removed. Measure
distance from front cover to grille or brackets that may interfere with
camshaft against the length of the camshaft.
10. Remove distributor cap and wires, rotate engine until rotor points
towards number 1 terminal in cap and pointer on front cover is on
top dead center (TDC) and remove distributor (See Fig. 1). Make a
note of the approximate position of the distributor housing in relation
to the manifold to assist in getting the distributor properly located
during re-installation.
5.
Remove the gas cap to relieve pressure. Disconnect fuel line and
plug the line. Replace gas cap.
11. Remove carburetor and intake manifold assembly. Remove and
discard intake manifold gasket.
Catalog #2261, #2262
Rev. 9/06 - RS/mc
Page 2 of 4
©2006 Edelbrock Corporation
Brochure #63-0260
12. Remove rocker arms and pushrods.
17. Rotate engine until timing marks are aligned (See Fig. 2).
13. Remove hydraulic valve lifters.
18. Remove bolts retaining camshaft sprocket. Remove sprocket and
chain.
14. Remove crankshaft pulley, and using a suitable puller, remove
crankshaft dampener (harmonic balancer).
15. Loosen oil pan and remove water pump and front cover.
NOTE: The front cover oil seal should be replaced before the front
cover is re-installed.
19. Remove camshaft thrust plate (1996-up, Gen VI late model blocks,
when installing cam #2262).
20. Remove camshaft.
21. Using appropriate gear puller, remove crankshaft sprocket.
16. Remove fuel pump and fuel pump pushrod (vehicles with
mechanical fuel pumps only).
INSTALLATION PROCEDURE
1.
Check lifters as covered in Lifters section. Coat cam lobes with
fresh clean oil. Lube distributor drive of cam with assembly lube
(supplied).
2.
Install new camshaft with new sprockets and timing chain. Torque
to 25 ft/lbs. (Make sure to install the thrust plate before the cam
sprocket on late model blocks).
NOTE: Roller cams require the use of a cam thrust button
spacer to control camshaft end play. Check camshaft end-play,
maintain between .005" and .010". This must be checked with
the timing cover, thrust button and gasket in place, just as it
would be after final assembly without the roller lifters installed.
Late model (1996-Up Gen VI) blocks use a thrust plate and do
not require a thrust button.
CAUTION: When using Performer-Link True Rolling Timing
Chain and Gear Set (#7810) or Accu-Drive gear drive set
(#7891) with an Edelbrock camshaft, straight up timing
alignment is achieved. If any other timing gear set is used, it is
necessary to check camshaft position for correct timing
alignment. This requires indexing the camshaft with a degree
wheel to verify timing alignment. O.E.M. or non-Edelbrock
timing gear sets are not recommended for use with Edelbrock
camshafts. Use locking compound material on bolt threads
holding gear to cam. Torque to factory specification listed in
Motors or other repair manual.
3.
Install your roller lifters using fresh clean oil on the lifter and the
lifter bore just prior to installing. Check to make sure all lifters fit
freely in lifter bores.
cylinder numbers 1, 3, 4, 8 and intake valves on cylinder
numbers 1, 2, 5, 7 to zero clearance between rocker arm and
valve tip. This is “zero lash”. While tightening the adjusting
nut, spin the pushrod between your thumb and forefinger.
When you feel resistance, you are at zero lash. From this
point, turn adjusting nut down (clock-wise) ¾ to 1 turn more
for final adjustment.
C.
6.
Line up camshaft with timing marks aligned (See Fig. 2).
5.
VALVE ADJUSTMENT:
A.
B.
7.
Torque front timing cover bolts to 6-7 ft. lbs.
8.
Install front harmonic balancer and torque to 60 ft.-lbs.
9.
Install fuel pump and pushrod.
10. Install water pump using new gaskets and torque to 30 ft.-lbs.
11. Install intake manifold/carburetor assembly using new intake gasket
set and torque bolts to 25 ft/lbs (except for the four bolts between
each pair of intake runners, which only get snugged hand-tight with
a short box-end wrench).
12. DISTRIBUTOR INSTALLATION & ENGINE TIMING
Install pushrods with lube on both ends, making sure the
pushrod tip hits the center of the lifter cup. Install rocker
arms, but do not tighten the adjusting nuts. You are now
ready to start valve adjustment.
Turn the engine over until the No. 1 cylinder is at TDC firing
position (Both #1 lifters are down in the lifter bores and
cylinder #6 are up). At this point, adjust exhaust valves on
Catalog #2261, #2262
Rev. 9/06 - RS/mc
Install front timing cover and oil pan.
NOTE: Install new seal between oil pan and front cover if old
seal is damaged after removal. Use RTV silicone sealant on
seal to ensure proper seal to pan.
NOTE: DO NOT soak lifters in oil, or “pump up” lifters prior to
installation. This will result in improper lifter preload.
4.
Turn the engine over one full turn, until #6 cylinder is at TDC
firing position, and adjust the exhaust valves on cylinder
numbers 2, 5, 6, 7 and the intake valves on cylinders 3, 4, 6,
8 as described in step “B”. The valves are now adjusted.
Page 3 of 4
NOTE: Before installing your distributor, check the gear drive on the
distributor and oil pump for any signs of wear. If worn, be sure to
replace with a new gear or you may wear out your camshaft
prematurely. This is especially true when rebuilding your engine and
a high performance oil system is used, which generates a heavier
load on the camshaft gear system. Edelbrock camshafts are
designed to use OEM-type gears only.
A.
Turn the engine over in direction of rotation until the No. 1
intake valve closes and continue until the pointer on the front
cover is approximately five degrees (5°) before top dead
center (BTDC) (See Fig. 1 for firing order).
©2006 Edelbrock Corporation
Brochure #63-0260
B.
C.
Re-install the distributor with the rotor pointing towards No.
1 terminal in the cap, and with the distributor housing in its
original position. If distributor will not drop down all the way
to the flange on the manifold, it will be necessary to align the
distributor shaft with the oil pump drive. Slowly rotate the
engine until the distributor drops down against the manifold,
then continue turning until two complete revolutions are
completed and the timing marks once again come to five
degrees BTDC.
Lightly tighten the hold-down clamp so that the distributor
can still be turned to determine final setting using a timing
light with the engine running.
years and models of vehicles, no one combination could suffice for all
installations. The following procedures are only a guideline
•
IGNITION TIMING: Increase initial setting to 12-14° BTDC (Before
Top Dead Center). Total advance not to exceed 32-34°. With initial
and centrifugal weights combined timing should be at full advance
by 4000-4500 rpm. After timing is adjusted, re-connect the vacuum
advance line.
NOTE: The best combination for any particular vehicle or
application must be determined by trial and error using the
above information as a guideline.
•
13. Replace valve covers, carburetor linkage and remaining vacuum and
electrical connections.
14. Re-install air conditioner, if so equipped.
15. Refill radiator with coolant and re-connect battery.
HEADERS: For best performance, headers are recommended. For
this application, primary tube diameter should be 1-7/8”,
approximately 31” long, and terminating into a 3” to 3-1/2”
collector. The remainder of the exhaust system should consist of
dual exhaust and tail pipes, at least 2-1/4” in diameter, with freeflowing mufflers. These recommendations may vary depending on
your specific application.
16. Double check all connections, fuel lines, etc. before starting engine.
WARNING
18. CAMSHAFT & LIFTER RUN-IN: Standard camshaft run-in is not
required when using a roller cam.
In order for this Performer RPM cam and lifter kit to be covered
under ANY WARRANTY, you MUST use the correct specification
valve springs. Failure to install the correct valve springs may cause
lifters not to follow the cam lobes and damage engine parts.
SPECIAL INSTRUCTIONS: With the Edelbrock manifold and camshaft
package installation, a carburetor jet change and ignition timing changes
may be required for best performance. Due to the varied applications of
IF YOU HAVE ANY QUESTIONS ABOUT THIS APPLICATION,
PLEASE CONTACT OUR TECHNICAL DEPARTMENT
IMMEDIATELY.
17. Engine oil and filter should be changed before start-up.
Timing
Marks
Figure 1 - 396-454 C.I.D. Chevrolet V8
Firing Order and Timing Marks
Firing Order: 1-8-4-3-6-5-7-2
Turn distributor counter clockwise to advance timing
Figure 2 - Timing Chain Sprocket Alignment
Edelbrock Corporation • 2700 California St. • Torrance, CA 90503
Tech-Line: 1-800-416-8628 • E-Mail: Edelbrock@Edelbrock.com
Catalog #2261, #2262
Rev. 9/06 - RS/mc
Page 4 of 4
©2006 Edelbrock Corporation
Brochure #63-0260
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