High Perf. Full Set Rocker Arm Studs for Chevrolet big block 496 cid (8100 series)

High Perf. Full Set Rocker Arm Studs for Chevrolet big block 496 cid (8100 series)Higher Performance Series: Made of 8740 chrome moly forgings and heat treated to 180,000 psi. Excellent for E. T. Bracket Racing, limited rule oval track competition and street use. 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

Most applicationshave undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for theadditional compression of gaskets

ARP Pro Series head bolt kits are application specific and designed to deliversuperior strength typically associated with competition engines

self-locking nuts

ARP offers two styles of Flywheel/Flexplate bolts: The premium grade Pro Series

drive ratchet orbreaker bar to facilitate rotating the crank assembly

We highly recommend using a stretch gauge when installingrod bolts and other fasteners where it is possible to measure thelength of the bolt after tightening

12-point head design and larger than stock shank diameter for increased strength and improved flywheel register

thread pitch to thread pitch

ARP main bolts are designed to meet the exacting standards and demands of professional engine builders

Both are nominally rated at 180

enabling the rotationof an engine with any 1/2

threadpitch to thread pitch