Intake Manifold, Oval Port (Holley Carburetors)

Big Block Intake Manifolds, Gaskets and Components

The wide range of Chevrolet Performance intake manifolds are cast-iron and aluminum for carbureted and fuel injected applications. These intake manifolds were designed specifically for GM engines so you know they will deliver optimum performance. Due to the profile of some Chevrolet Performance high-rise intake manifolds, hood clearance should be carefully checked before ordering an intake manifold.

Intake Manifold

Oval Port, Square Bore, Holley Carburetors

12363406 Chevrolet Intake Manifold

• Same as manifold P/N 12363420, but designed for use with a Holley carburetor
• Square bore
• Dual-plane design requires bolt kit P/N 12367959, which includes 16 bolts (8740 chrome-moly 3/8-16 x 1.5″ with 3/8″ hex head and 16 5/8″ O.D. washers), and manifold gasket kit P/N 12366985
• Accepts air conditioning and alternator brackets and a late-model water neck

Note: Will not fit production Corvettes, and may not fit Chevelles. Manifold carb flange height is 4.450″. Open carburetor spacer is not recommended with use of dual-plane manifolds.