Speedmaster SBM Intake Manifold Mid-Rise Design 1-147-028

The main difference is that there is an open area under the plenum chamber a feature that is sometimes referred to as an air gap design. Air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine. This cooler air charge helps provide additional power and torque. These cast aluminum mid-rise air intake manifolds are offered to fit a variety of V8 engines including applications for Chevy, Chrysler, Dodge, and Plymouth. Order the model recommended for your year/make and engine size.