Chevy BBC 396 454 1965-1975 Chevelle Camaro Bel Air Raw Steel Headers This feature is sometimes called

This feature is sometimes called an air gap design

enhancing performance under high-stress conditions

Increasing air flow through your current filter assembly is as easy as replacing your top plate with one of these Speedmaster X-Stream Air Flow Top Plates

The runners are velocity stacked

Chevy BBC 396 454 1965-1975 Chevelle Camaro Bel Air Raw Steel Headers This feature is sometimes calledIncrease your horsepower and torque for your ride just bolt on these Speedmaster headers! These headers are designed with 3 8 in. thick laser cut flanges and mandrel bent primary tube. If your vehicle is using aftermarket components, parts from other applications, or custom altered parts, then it is the installer's responsibility to verify fitment.