Wilson Manifolds Carburetor Spacer - 4500 1.5" 4-Hole L/W Tapered HASZ15DK 1963 Chevrolet Bel Air Base

1963 Chevrolet Bel Air Base CID 427 Naturally Aspirated GAS

(Same taper as 20031)

The kit even includes a set of H13 plugs with built-in warning cancelers at no additional charge

EV1 / Impact Offset Evo

Wilson Manifolds Carburetor Spacer - 4500 1.5" 4-Hole L/W Tapered HASZ15DK 1963 Chevrolet Bel Air BaseNitrous Pro Flow Tapered Spacers feature a computer generated variable radius taper design that maximizes the airflow through the carburetor and enhances air fuel distribution for more horsepower. Part throttle performance and distribution are improved by redirecting the flow pattern created by the partially open throttle blades and gradually reducing the velocity of the air fuel mixture entering the plenum to allow for a smoother transition into each