Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Black] Increase fuel volume and better

Increase fuel volume and better fuel distribution with these Speedmaster fuel rails

carb gaskets

Speedmaster Powerjection EFI systems use a number of sensors

but not included

They are made from stamped steel and feature a chrome plated finish for good looks and durability

Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Black] Increase fuel volume and betterThe 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.