© 1998 Edelbrock Corp. 12/98
A-Carburetor will work with non-EGR (Exhaust Gas Recirculation) or pre-emission control system.
I-Carburetor has no provision for evaporative canister.
K-Carburetor requires #8008 or #8024 stud, nut and washer kit. Determine length needed before installation.
O-Carburetor has manual choke only.
If electric choke is required use Edelbrock kit #1478.
Note: Manifold has been tested and proved compatible with Holley 0-4779 (750 cfm).
• BRACKETS
1. Due to the design and leg configuration on the Edelbrock manifold, the throttle and kick-down bracket on some model vehicles
requires modification to fit. If this condition occurs with your installation, you may purchase the Edelbrock mounting bracket #8036,
or modify your bracket as shown in Figure 3.
2. The carburetor location has been moved up by 0.7" and forward by 0.125" from the OEM location for maximum performance. If your
throttle cable bracket fastens to the carburetor pad you won’t have a problem. If your bracket fastens to the back of the manifold use
kit #8012. (To install #8012 properly, depress the throttle pedal fully, open the carburetor to WOT, and then install the #8012 extension
to the carburetor). Failure to do this will prevent your throttle pedal from tripping the transmission sensor at WOT. This affects
transmission kick-down and up-shift points resulting in reduced performance.
• GASKETS AND SEALANT
CAUTION: Do not use high performance or competition type intake gaskets for street application. Due to material deterioration under
street driving conditions, internal leakage of both vacuum and oil may occur.
1. Use only Edelbrock #7201, Fel-Pro #1205, or OE equivalent gasket set when installing Edelbrock manifolds for street applications.
2. Apply Edelbrock Gasgacinch sealant, #9300, to both sides of the manifold as well as head surfaces. This procedure ensures a good
seal.
RPM AIR-GAP MANIFOLD
CATALOG #7501
MODEL: Chevrolet 262-400 c.i.d.V8, 1957 to 1986 Non-EGR
INSTRUCTIONS
CARBURETOR REFERENCE PARTS REQUIRED FOR INSTALLATION
Performer #1407 (750 cfm) A, I, K, O #8036 Throttle Cable Bracket (1972-79 only) or #8012 Throttle Cable Extension Kit
• PLEASE study these instructions, and the General Instructions, carefully before installing your new manifold. If you have any
questions or problems, do not hesitate to call our Technical Hotline at: 1-800-416-8628.
• EGR SYSTEM: 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. Not legal in California on pollution-
controlled motor vehicles.
• MANIFOLD: The Edelbrock RPM Air-Gap manifold has been designed for 262-400 c.i.d. small-block Chevrolet engines. The
manifold accepts late model water neck, air conditioning, alternator and H.E.I. ignition systems. Use the recommended electric or
manual type choke carburetors only. This manifold is recommended for street high performance and race vehicles only. The RPM
Air-Gap manifold provides good low rpm response for street performance vehicles and increases performance above the 5000 rpm
range. It also provides horsepower and torque increases, when used with any mix of aftermarket equipment available for vehicles oper-
ating from 1500-6500 RPM.
• 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.
• POWER PACKAGE: Edelbrock RPM Air-Gap manifolds are part of a total Power Package System that can be completed with the
use of Edelbrock Performer RPM aluminum cylinder heads, dyno-matched Performer RPM camshaft #7102, springs, chain set,
carburetors and related parts specifically designed to give you maximum results. Please refer to our catalog for details.
• CARBURETOR RECOMMENDATIONS: If parts required for installation are unavailable locally, contact Edelbrock directly.
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