Aluminum Engine Intake Manifold, Black, designed for 1957–1986 Chevy SBC Small Block 305, 327, 350, and 400 engines. This dual-plane, 180° street manifold is compatible with Holley, Carter AFB, and Edelbrock square flange carburetors and operates in the 1,500–6,500 RPM range. It features intake gasket port dimensions of 1.23" W x 1.99" H, accepts HEI distributors with dual hold-downs, and includes no provisions for oil fill tubes or exhaust-heated chokes. With a larger-than-stock plenum and runners, it supports larger engines, enhances RPM potential, and delivers power comparable to single-plane manifolds while maintaining the throttle response and drivability of a dual-plane design.