Designed for use with ARP's patented Perma-Loc adjusters, not OEM-style self-locking nuts They run-in straight and true, and the extra-large radius base offers greater resistance to flex. ARP Rocker Arm Studs Pro Series Rocker Arm Studs For With Roller Rockers And Stud Girdle These Parts Have A Shank Portion 1 Chrome Moly Stud Kit The solution? ARP quality. 134-7103 High Performance Series Rocker Arm Stud Kit The dimensions for these studs are: 2., 100 overall stud height, ., 750 screw-in thread depth, . thread pitch to thread pitch. Lengths are exact, designed to provide positive seating every time Lengths are exact -- designed to provide positive seating every time. ARP rocker studs are concentric within ., 005 T., I., R. Aazon.co: ARP 100-7201 Rocker Ar Stud Kit - 16 Piece 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 Pro series rocker arm studs are ideal for competition applications. They are made from 8470 chromoly steel and are heat-treated to 200,000 psi tensile strength. They 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... Manufactured to high tolerances so they run-in straight and true, and the extra-large radius base offers greater resistance to flex
