Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Polished] These kits will support your

These kits will support your entire electrical system from headlights to tail lights

They also feature a non-metallic

1019-PCE164

On engines over 500hp

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

Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Polished] These kits will support yourThe 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.