Our dual-plane high-performance intake manifold for the small block Chevy is ideal for street performance applications. With a design that improves throttle response, as well as power and torque over a wide rpm range - idle to 5,500. It is cast from lightweight aluminum and features a low profile for ideal hood clearance. Additional provisions include dual distributor hold-downs, 4 corner water ports, and a choke block-off kit. Set up for spread bore carbs, this manifold comes with an adapter plate and gasket for use with square bore types. Fits 1955-1986 Chevy small block engines. Features dual-plane design with a polished finish. Includes Head Bolt Adapters, Choke Block Off Kit, Square Bore Adapter Kit.