Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Black] You can choose between a

You can choose between a 1-wire (Battery sense wire from the plug must be connected to the battery positive

Just bolt the pre-assembled unit to the back of the shifter and you are ready to go

the rod and main bearings

performance and great value make these hardened input shafts an essential component for anyone looking to raise their transmission to the next level

They are made of lightweight aluminum the polished for a shiny finish

Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Black] You can choose between aThe Speedmaster MID AIR design features the identical plenum and runner design as the normal mid rise. 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.