ARP's patented Perma-Loc adjusters (available separately) should be used, not OEM-style self-locking nuts. Designed for use with ARP's patented Perma-Loc adjusters, not OEM-style self-locking nuts Bracket Racing, limited rule oval track competition, and street use Stud dimensions are: 1.900 overall stud height, .750 screw-in thread depth, 1.000 adjuster thread depth, 7/16-20 shank diameter and thread, and 7/16-14 base diameter and thread thread pitch to thread pitch. Screw In Rocker Studs Sbc ARP #100-7121 Chevy/Ford Rocker Arm Stud Kit (2 Track Studs Lengths are exact -- designed to provide positive seating every time. Lengths are exact, designed to provide positive seating every time It is highly advisable to determine what the optimum rocker arm stud length is for your particular application. Find many great new & used options and get the best deals for ARP 100-7121 Rocker Arm Stud Kit ( 1007121 ) at the best online prices at ! Free shipping for many products These High Performance series rocker arm studs are made of 8740 chrome moly forgings, heat-treated to 180,000 psi, and the tips are ground flush for optimum adjuster seating. 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. Made from 8740 chrome moly forgings and heat treated to 180,000 psi; excellent for E.T. The solution? ARP quality.
Free 30-day returns 
Free 30-day returns
