Chevy SBC 350 1957-95 MID-AIR™ MidRise Aluminum Intake Manifold [Satin] Use the stock Quadra-Jet carb

Use the stock Quadra-Jet carb or 500-650 cfm vacuum secondary carburetor

intake gaskets

We made our own upgraded versions

The quality of these throttle bodies are better than others available today

all components are hand fit and assembled in USA for the ultimate in precision fit and finish

Chevy SBC 350 1957-95 MID-AIR™ MidRise Aluminum Intake Manifold [Satin] Use the stock Quadra-Jet carbThe 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.