1957-1995 SMALL BLOCK CHEVY 283 327 350 Aluminum Intake Manifold Intake Port size: 1.90" x 1.19" Manifold Height: 4.05" Black finish dual plane design for outstanding power from idle to 6000 RPM Dual carb pattern, accepts spread bore such as Quadrajets and includes adapter for use with square bore carbs like Holley Provision for exhaust heated choke and crossover for street applications Dual distributor hold-down provisions for extra protection against distributor rotation Four corner water outlets Accepts late-model water neck, air-conditioning, alternator, and HEI brackets