The COMP Cams Ultra Pro Magnum XD 1.65 ratio stud-mount rocker arm offers increased lever ratio for Chevrolet small-block and V6 engines. Machined from 8650 steel with a billet pushrod seat insert and precision-sorted needle bearings, these rebuildable rockers use hardened roller tips and accept most spring diameters and retainers. They are specified for 3/8" stud Chevrolet V6 and 265–400 Small Block applications.
COMP Cams Rocker CS 1.65 3/8in Ultra Pro