Chevy SBC 350 1957-95 MID-AIR™ MidRise Aluminum Intake Manifold [Black] Our dual plane big block

Our dual plane big block manifold is now available with rectangular ports

*Will not work on engines w/reverse flow heads as utilized on 1992-96 LT-1 Corvette

They are built from strong

equal-distribution layout produces great midrange torque without compromising top-end power

They weigh only 2

Chevy SBC 350 1957-95 MID-AIR™ MidRise Aluminum Intake Manifold [Black] Our dual plane big blockThe 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.