Edelbrock 4.3l vortec User Manual

Page 1 of 2

Rev. 11/02

Brochure #63-0152
©2002 Edelbrock Corporation

• Please study these instructions carefully before installing your new manifold. If you have any questions or problems,

please call our Technical Hotline at: 1-800-416-8628, 7:00 am to 5:00 pm, Monday - Friday, Pacific Standard Time or
e-mail us at edelbrock@edelbrock.com.

• EGR SYSTEM: This manifold will not accept stock EGR (exhaust gas recirculation) equipment. Not legal on pollution-

controlled motor vehicles.

• MANIFOLD: This manifold will not accept any O.E.M. carburetor systems. We suggest you use the carburetor listed in

the carburetor recommendations. This manifold was designed for street rod, off-road and marine applications.

• ACCESSORIES & INSTALLATION ITEMS: Major recommendations are listed below. 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.

• MARINE APPLICATIONS: This manifold has been designed to accept either MerCruiser or OMC waterneck housings

using the lateral bolt holes of the waterneck flange in the manifold. Because of carburetor interference, the use of a 1"
high divided carb spacer (such as Edelbrock #8714) may be necessary. Waterneck housings vary, so determine if spacer
is needed prior to installation. If marine carburetor #1409 is used, you must re-calibrate the carburetor with Calibration Kit
#1485. NOTE: Salt water will corrode coolant passageway of manifold and greatly shorten manifold service life.

Use only carburetors recommended. If parts required for installation are

unavailable locally, contact Edelbrock directly.

A - Carburetor will work with non-EGR (Exhaust Gas Recirculation) or pre-emission control system.
F - Use carb-to-manifold base gasket supplied with carb.
I  - Carburetor has no provision for evaporative canister.
K - Carburetor requires #8008 or #8024 stud, nut and washer kit. Determine length needed before installation.

• GASKETS AND SEALANT

1. Use only original equipment intake gasket set GM #12529196 when installing this Edelbrock manifold. If the original

gasket is in good condition, it may be re-used.

2. Do not use any type of gasket sealer on intake gaskets. The rubber O-rings will seal without chemical sealers.

3. Eliminate the end seals. Use automotive grade RTV silicone instead. Apply a bead of sealant approximately 1/4" high

across the block end seal surface, overlapping the intake gasket at the four corners. This method eliminates end seal
slippage and deterioration.

Performer #1403 (500 cfm)

A, F, I, K (for 4.3L only)

(none)

Performer #1404 (500 cfm)

A, F, I, K (for 4.3L only)

(none)

Performer #1409 (600 cfm)

A, F, I (for 4.3L Marine only)

#1485 Calibration Kit for Marine Applications