Speedmaster serpentine belts are designed to keep your accessory drive operating properly
flush-machined set screws for proper contact on the studs
These rear-ends have a reputation for being tough to handle the abuse of Circle Track racing
Add a custom look to your engine without breaking the bank with timing covers from PCE
Their strong die-cast aluminum design ensures an excellent gasket seal and dissipates heat better than many other covers
7/16" Polylock Rocker Arm Nut Set (Suits: BBC 454 Stud Girdle) Speedmaster serpentine belts are designedSpeedmaster rocker arm adjusting nuts are high quality polylocks designed for full roller rocker arms. Made from heat treated, premium grade 4140 chromoly steel, these adjusters provide 190,000 psi tensile strength for the utmost in reliability. Precision CNC machined threads to ensure optimum seat pressure, flush machined set screws for proper contact on the studs, and, best of all, they don't require any special tools for installation. They're