The 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. Product Line: MidRise Air.
Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Satin]
Oldsmobile 400 425 455 Polish Coated Mid Rise Intake Manifold
Oldsmobile 400 425 455 Double Roller 9 Keyway Billet Steel Timing Chain Kit
H Beam 6.735" 2.499" .98" Bronze Bush 4340 Connecting Rod Oldsmobile 400 425 455
Oldsmobile 400 425 455 Satin Mid Rise Intake Manifold
![Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Satin]](https://images.buynet.work/thumb.php?i=312172620&s=240)
![Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold [Satin]](https://images.buynet.work/thumb.php?i=334276639&s=240)
