Chevrolet, GMC, & AMC Jeep 2.8 Litre 60° V6 Instructions
• EGR SYSTEM: For EGR applications when using Performer top #3787, you must drill a 7/16″ hole in the manifold base prior to installation (see Figure 2). Be sure to blow chips out of manifold. This procedure is not necessary for non-EGR installations.
• MANIFOLD: This manifold is designed as a two-piece manifold; the base, or lower part, (#3785), bolts directly to the cylinder heads. There are two interchangeable tops to choose from. The Performer 2V top, #3787, accepts the OEM 2-bbl. carburetor and EGR system for use on the street or off-road situations. It comes with linkage, hardware, gaskets and instructions to bolt directly to base #3785. The Performer 4V top, #3789, accepts standard flange carburetors and is not equipped for EGR. This top also comes with link-age, hardware, gaskets, and instructions to bolt directly to the base #3785. See “Carburetor Recommendations” below for both tops.
CAUTION: Performer 2V top #3787 (with stock carburetor) is 1″ taller than stock. Performer 4V top #3789 and 4V carburetor is 1.6″ taller than stock. Both will require hood modifications on Camaros and Firebirds, and hood shimming on AMC Jeep Cherokees.
• 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 Performer manifolds are part of a Total Power Package System that can be completed with the use of dyno-matched Performer-Plus camshaft #3790, Tubular Exhaust Systems, and related parts specifically designed to give you maximum results. Please refer to the Power Package Guide in the Edelbrock Catalog to select all the components that you need.
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