Speedmaster 1-147-019 MidRise Intake Manifold Big Block Chevy 454 Oval Port Heig
Satin Finish 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. 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....
Speedmaster 1-147-001 LowRise Intake Manifold 1957-1995 Small Block Chevy 350 He
Satin Finish The Speedmaster LowRise Manifolds are our lowest profile manifold and is also the only one that is street legal on pollution controlled vehicles. It is set up to accept a spread bore carb but comes with an adapter plate that permits the use of square bore carbs. To remain street legal with a square bore carb, you must use one that is also approved as street legal for your application. This Speedmaster LowRise manifold is a direct replacement for the stock manifold on 1957-95....
