Chevy BBC 454 Aluminum Valve Covers [Silver] These Speedmaster 8-71 and 6-71

These Speedmaster 8-71 and 6-71 supercharger manifolds are aluminum constructed and suitable for competition or street use

The Speedmaster MidRise Air design features the identical plenum and runner design as the normal MidRise

these housings tubes are manufactured with

filter element

Chevy BBC 454 Aluminum Valve Covers [Silver] These Speedmaster 8-71 and 6-71Cover your valvetrain with a set of Speedmaster cast aluminum valve covers. Their strong die cast aluminum design ensures an excellent gasket seal and dissipates heat better than many other covers. They come in tall and short models, and most include bolt in baffles that can be replaced.