Ford SB 289 302 351 Windsor 180cc 60cc Cast Iron Bare Cylinder Head Speedmaster aluminum crankshaft pulleys are

Speedmaster aluminum crankshaft pulleys are manufactured from 356 aluminum that is heat-treated to T-6 specs

accurate movements when shifting

Bearing wear is dramatically reduced and the fatigue strength is greatly improved

They have a minimum wall thickness of

They're available for a variety of applications

Ford SB 289 302 351 Windsor 180cc 60cc Cast Iron Bare Cylinder Head Speedmaster aluminum crankshaft pulleys arePerformance Cast Iron cylinder heads are designed to be a direct replacement for your worn or cracked heads. These are new castings, modeled off OE castings for factory fit and finish. Some applications feature a thicker deck to solve common warping or cracking issues. Instead of spending the time and money refurbishing your existing heads, use Speedmaster cast iron cylinder heads.