Ford SB 260 289 302 Windsor LowRise Aluminum Intake Manifold [Polished] The Speedmaster top plates allow

The Speedmaster top plates allow air to enter smoothly through the top

and less chance of crank failure

Speedmaster aluminum pulleys are made from a 356 aluminum alloy that is heat-treated to T-6 specs

Speedmaster valve locks are wider-angled 10 degree locks

Ford SB 260 289 302 Windsor LowRise Aluminum Intake Manifold [Polished] The Speedmaster top plates allowThe 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 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.