3/8" Polylock Rocker Arm Nut Set (Suits: Stainless Rockers) Manufactured with lightweight aluminum technology

Manufactured with lightweight aluminum technology

Speedmaster keeps you in the race with competitive pricing and quality parts

The successful formula of offering a complete engine drive accessory kit has now been applied to the Serpentine with Speedmaster pulley systems

Speedmaster offers all the accessories you will need to find the proper configuration for your supercharger combination

Speedmaster 7000 Series Cast Body Ready-to-Run distributors are the perfect upgrade for your outdated and worn out stock distributor

3/8" Polylock Rocker Arm Nut Set (Suits: Stainless Rockers) Manufactured with lightweight aluminum technologySpeedmaster 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