Pontiac 326 350 389 400 421 428 455 HiRise Aluminum Intake Manifold [Satin] Designed for engines producing up

Designed for engines producing up to 500hp

They're available in several sizes to fit your valve covers

enhancing performance under high-stress conditions

Design improvements to the splines

Does Not Include Rods/Brackets/Stick

Pontiac 326 350 389 400 421 428 455 HiRise Aluminum Intake Manifold [Satin] Designed for engines producing upThis 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.