Chevy BBC 454 Oval Port MID-AIR™ MidRise Aluminum Intake Manifold [Black] The runner length and the

The runner length and the tapered cross-section were designed to perform well for a wide range of engine configurations

making them ideal for withstanding the rigors of any demanding environment

These manifolds require a universal 4-barrel throttle body

short block engines are the solution to a hassle-free power build

measuring 92mm

Chevy BBC 454 Oval Port MID-AIR™ MidRise Aluminum Intake Manifold [Black] The runner length and theThe 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.