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 within .005 T.I.R.
concentric from thread pitch to thread pitch.
They run straight and true.
Lengths are designed exact to provide positive seating every time.
An extra-large radius base offers resistance to flex that is greater.
Available in both Pro Series and High Performance models.
NOTE Not to be used with self-locking OEM-style nuts.
To be used with ARP's patented Perma-Loc adjusters.
HIGH PERFORMANCE SERIES Made of 8740 chrome moly forgings and heat-treated to 180,000 psi.
Excellent for limited rule oval track competition, E.T.
Bracket Racing, and street use.
Tip ground flush for optimum adjuster seating.
PRO SERIES Designed for competition applications, ARP's Pro Series rocker arm studs are made of premium grade 8740 chrome moly steel and heat-treated to a tensile strength of 200,000 psi.
IMPORTANT TECH NOTE It is advisable to determine what the optimum rocker arm stud length is for your application.
This is especially true when long pushrods and valves are employed; you should raise the installed height of the rocker arm to compensate for the longer-than-stock components.
Rocker Arm Studs Pro Series Shank Under Hex to Locate Guide Plate Adjuster Thread Depth 0.7 Base Dia/Thread 7/16-14 Screw-In Thread Depth 1.3 .820 Shank Dia/Thread 7/16-20 Stud Height 2.
