Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Polished] They will allow for the

They will allow for the use of reverse-style transmission valve bodies or switching from a 3-speed to a 4-speed

Bronze gears absorb the increased wear in special cams and magnetos and are easily replaced before costly damage to the camshaft gear occurs

If you want the awesome look of a chrome alternator but your GM alternator is working great

oxygen sensors

Speedmaster Steel main girdles are machined from 1045 steel

Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Polished] They will allow for 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.