Edelbrock 262-400 Instructions Manual

© 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.