Ford FE 390 427 LowRise Aluminum Intake Manifold [Polished] Speedmaster axle stubs are machined

Speedmaster axle stubs are machined from solid billet 4340 material

although slightly taller

Intake manifold (Dual Plane)

Nitrous/injector bosses

Aluminum Roller Rocker Arms 1

Ford FE 390 427 LowRise Aluminum Intake Manifold [Polished] Speedmaster axle stubs are machinedThe 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.