Speedmaster 1-147-075 Pontiac 326 350 389 400 428 455 MID-AIR™ MidRise Aluminum Intake Manifold Black

The Speedmaster MID-AIR™ MidRise Aluminum Intake Manifold (Part# 1-147-075) is engineered for Pontiac engines displacing 326, 350, 389, 400, 428, and 455 cubic inches. Constructed from lightweight aluminum with a bold black finish, this mid-rise design optimizes airflow characteristics for improved throttle response and performance over a broad RPM range.

The MidRise plenum height strikes a balance between low-end torque and top-end power, making this manifold a versatile upgrade for street and street/strip Pontiac builds. The precision-cast aluminum construction keeps weight down while providing a durable, corrosion-resistant foundation that pairs seamlessly with a wide variety of carburetor setups compatible with these classic Pontiac V8 applications.