Description
ARP Pro Series series rocker arm studs are suited for all out competition use. They are made from 8740 chromemoly steel and are heat-treated to 180,000 psi tensile strength. These studs are concentric within .005 T.I.R. thread pitch to thread pitch, which will give you more consistent rocker geometry. With an extra-large radius base, these studs are more resistant to flex and will provide a more positive seating. These rocker arm studs are designed to be used with Perma-Loc adjusters or other Poly-Lock nuts. (not for use with OEM-style, self-locking nuts).
Set of 8, Intake side of some Aluminum Big Block Chevy Heads
Base Thread Size: 7/16-14″
Rocker Arm Nut Thread Size: 7/16-20″
Shank to Locate Guideplates: Yes
Rocker Arm Nut Thread Length: 0.700″
Effective Stud Length: 2.000″
Base Thread Length: 0.820″
Sold as a set of 8
