Assault Racing Products PC2001BK Small Block Chevy Black Dual Plane Aluminum Intake Idle-5500 RPM SBC 283 305 327 350 RPM Range: Idle - 5500 Dual Plane Manifold Height: 4.05 in Dual carb pattern, accepts spread bore such as Quadrajets and includes adapter for use with square bore carbs like Holley Accepts late-model water neck, air-conditioning, alternator, and HEI brackets