Application: 3/8˝ typical small block application. Fits most stock Small Block Chevy engines with 3/8" screw-in studs.
If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in – you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. ARP rocker studs are concentric within .005 T.I.R. thread pitch to thread pitch. They run-in straight and true. Lengths are exact – designed to provide positive seating every time. An extra-large radius base offers greater resistance to flex.
ARP's Pro Series rocker arm stud kits are designed for competition applications. They're made of premium grade 8740 chrome moly steel and heat-treated to a tensile strength of 200,000 psi.
Don't take any chances with the safety of your street machine or race car, insist on the special bolts and fasteners developed by the engineers at ARP!