Pontiac 326 350 389 400 421 428 455 HiRise Aluminum Intake Manifold [Satin] beat-up OEM cast iron yoke

beat-up OEM cast iron yoke

Design improvements to the splines

They are heat-treated and stress-relieved before any of the CNC machine work is done

Speedmaster gaskets are designed for today's performance engines

These Speedmaster engine lift plates will allow you to lift your engine up by its intake manifold for easier maneuvering

Pontiac 326 350 389 400 421 428 455 HiRise Aluminum Intake Manifold [Satin] beat-up OEM cast iron yokeThis manifold is a single plane manifold that will fit under all Pontiac hoods including the Trans Am "Shaker" hood. It accepts a stock Quadrajet carb but we also include an adapter plate for standard square bore carbs. This manifold is designed to work with cylinder heads up to 300 CFM. It is also available machined for injectors.