Chevy BBC 454 Oval Port MID-AIR™ MidRise Aluminum Intake Manifold [Black] They include all hardware for

They include all hardware for quick and easy installation

We control the entire machining process and use only premium materials

The Speedmaster 9" solid pinion bearing spacer kit is designed to retain the pinion depth settings for greater strength and reliability

If your standard Bowtie block could handle 1500+ HP it would be Speedmaster's H1 engine block

These control arms are manufactured to strict tolerances to employ a great fit and exceptional performance

Chevy BBC 454 Oval Port MID-AIR™ MidRise Aluminum Intake Manifold [Black] They include all hardware forThe Speedmaster MidRise Air design features the identical plenum and runner design as the normal MidRise. The main difference is that there is an open area under the plenum chamber. This feature is sometimes called an air gap design. The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine. This cooler air charge provides additional power and torque.