The Speedmaster 1-147-017 is a polished aluminum low-rise intake manifold designed specifically for Chevrolet Big Block 454 engines with oval port cylinder heads. The lightweight aluminum construction helps reduce overall engine weight while the polished finish delivers a clean, show-quality appearance under the hood.
The low-rise design is ideal for applications where hood clearance is a concern, making it well suited for street performance and dual-purpose builds on BBC 454-powered vehicles. Oval port matching ensures proper alignment with compatible oval port Big Block Chevy cylinder heads for optimized airflow and a reliable seal.