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

The body is alloy machined finish

They have injector bosses precisely positioned and machined for excellent fuel spray patterns and maximum power

Intake manifold (Dual Plane)

Speedmaster's ignition coils provide the performance needed to help keep vehicles running the way that they were designed

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.