Ford FE 390 427 LowRise Aluminum Intake Manifold [Polished] Our dual plane big block

Our dual plane big block manifold is now available with rectangular ports

improving belt retention and reducing the risk of slippage

Additionally

and best longevity on the market

Ford FE 390 427 LowRise Aluminum Intake Manifold [Polished] Our dual plane big blockThe 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.