1965-69 GM; Aluminum High Rise Intake Manifold; Big Block; 396/427-375 hp; with Factory Casting Marks

Reproduction aluminum high-rise intake manifold for 1965-69 Chevrolet big block (396/427-375hp) models with special high-performance engines. This reproduction rectangular port, big block intake manifold is manufactured to correct factory specifications and is the manifold found on all original high-performance L78 motors. Can be used with high performance cast iron or aluminum cylinder heads with rectangular intake ports. The carburetor mounting pad is machined for a standard flange Holley 4 bbl. carburetor. Features "snowflake" foundry mark, "firing order" casting 18436572 and part number # 3933163 cast into the manifold. Replaces OE part number # 3933163.

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