7/16" Polylock Rocker Arm Nut Set (Suits: BBC 454 Stud Girdle) These computer-machined brackets are manufactured

These computer-machined brackets are manufactured from high quality materials and come with a chrome finish

The Speedmaster Turbo 400 TH400 Aluminum Competition Transmission is engineered for extreme performance applications

Our dual plane big block manifold is now available with rectangular ports

this pulley ensures optimal performance and efficiency for supercharged setups

7/16" Polylock Rocker Arm Nut Set (Suits: BBC 454 Stud Girdle) These computer-machined brackets are manufacturedSpeedmaster 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