Chevy SBC 350 1957-95 MID-AIR™ MidRise Aluminum Intake Manifold [Satin] This Speedmaster Throttle Body is

This Speedmaster Throttle Body is designed to produce smooth

where dynamic flow and rock-steady pressure control are desired

or another that's set up the same

On the outside we've added a heavy-duty

Intake manifold (Dual Plane)

Chevy SBC 350 1957-95 MID-AIR™ MidRise Aluminum Intake Manifold [Satin] This Speedmaster Throttle Body isThe 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.