Ford SB 260 289 302 Windsor LowRise Aluminum Intake Manifold [Polished] Speedmaster valve locks are wider-angled

Speedmaster valve locks are wider-angled 10 degree locks

these caps have a one way valve

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

and less chance of crank failure

Ford SB 260 289 302 Windsor LowRise Aluminum Intake Manifold [Polished] Speedmaster valve locks are wider-angledThe 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.