Pontiac 326 350 389 400 421 428 455 HiRise Aluminum Intake Manifold [Satin] enhancing performance under high-stress conditions

enhancing performance under high-stress conditions

beat-up OEM cast iron yoke

Designed for engines producing up to 500hp

Speedmaster gaskets are designed for today's performance engines

The Speedmaster 9" solid pinion bearing spacer kit is designed to retain the pinion depth settings for greater strength and reliability

Pontiac 326 350 389 400 421 428 455 HiRise Aluminum Intake Manifold [Satin] enhancing performance under high-stress conditionsThis 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.