Speedmaster 1-147-092 Pontiac 326-455 HiRise Polished Aluminum Intake Manifold

The Speedmaster 1-147-092 HiRise Aluminum Intake Manifold is engineered for Pontiac V8 engines displacing 326, 350, 389, 400, 421, 428, and 455 cubic inches. Constructed from lightweight aluminum with a brilliant polished finish, this high-rise design promotes improved airflow and plenum volume for enhanced throttle response and increased horsepower over stock cast-iron manifolds.

The polished exterior gives your engine bay a clean, competition-ready appearance while the high-rise configuration is ideal for performance builds seeking maximum induction efficiency. Designed as a direct-fit replacement for compatible Pontiac V8 applications, this manifold is a strong upgrade choice for street performance, hot rod, and restoration builds running any of the supported engine displacements.