Chevy BBC 454 Aluminum Valve Covers [Silver] The Speedmaster MidRise Air design

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

allowing it to run cooler and quieter than external units

Speedmaster H-beam connecting rods are one of the strongest connecting rods available

These MidAir Series Manifolds includes a 4150 Series 1200 CFM Billet Throttle Body

and Grande Mustangs

Chevy BBC 454 Aluminum Valve Covers [Silver] The Speedmaster MidRise Air designCover 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.