Edelbrock Victor Jr. 454-O Intake Manifold Big-Block Chevy, Victor Jr. 454-R Intake Manifold Big-Block Chevy Installation guide

Edelbrock Victor Jr. 454-O Intake Manifold Big-Block Chevy, Victor Jr. 454-R Intake Manifold Big-Block Chevy Installation guide
Victor Jr. 454-R &Victor Jr. 454-O
MODEL: 396-502 c.i.d.
Big-block Chevrolet V8
Catalog #2902 & #2904
• PLEASE study these instructions carefully before installing your new intake manifold. If you have any questions or
problems, please call our Technical Hotline at: 1-800-416-8628, 7:00 am - 5:00 pm, Monday through Friday, Pacific
Standard Time, or e-mail us at [email protected]
• EGR SYSTEMS: This manifold will not accept stock EGR (exhaust gas recirculation) equipment. EGR systems are used on
some 1972 and later model vehicles and only in some states. Check local laws for requirements.
• MANIFOLD: These manifolds are designed for competition vehicles only. They are not intended to be used on the street as
they do not have provisions for chokes, emission pieces, etc. The Victor Jr. 454-R and Victor Jr. 454-O are designed to work
with the flow characteristics of 850 cfm standard flange square bore carbs. Due to the generous amount of aluminum cast
into the roof of the runners, it may be necessary to remove material from the flanges to clear to clear the valve cover rail
on stock and some aftermarket cylinder heads.
• ACCESSORIES & INSTALLATION ITEMS: Major recommendations are listed below. However, due to the variety of years,
makes and models to be covered, please review each part listed in the Installation Items section of the Edelbrock catalog
to decide whether more items are required for your specific vehicle than are mentioned in these instructions.
• CARBURETOR RECOMMENDATIONS: Standard square bore carburetors 750 cfm or larger.
NOTE : This manifold has no provision for power brake vacuum. If your application requires manifold vacuum, drill and
tap a 3/8” or 1/4” pipe hole in either the back or passenger side of the plenum as close to the carb flange as possible.
This should be done prior to installing the manifold.
• PREP AND TUNING FOR POWER: Optimum cylinder head port opening size should be as close as possible to the size of
the gasket being used. Port-match the manifold exits .020" per side
smaller than either the gasket being used or the cylinder head port
opening, whichever is smaller.
• MANIFOLD TORQUE : WARNING: Torque all manifold bolts circled in
Figure 1 to 25 ft./lbs. See Figure 1 for proper sequence.
• CARBURETOR SPACERS: Most applications will benefit from a oneinch open carburetor spacer such as Edelbrock #8710. This normally
requires slight re-calibration of the carburetor since small losses of
fuel signal cause the engine to run somewhat leaner than without the
spacer. A simple jet change is typically all that needs to be done.
• PLEASE complete and mail your warranty card. Be sure to write the
model number of this product in the “Part #____” space.
1/2” NPT
Figure 1
©2002 Edelbrock Corporation
Brochure No. 63-0139
Page 1
Rev. 9/02
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