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COMP Cams Ultra Pro Magnum XD 1.7 ratio rocker is a stud-mount component for Chevrolet 396–454 Big Block engines using 7/16" studs. Machined from 8650 steel with a billet pushrod seat insert, this rebuildable rocker is built to handle high spring pressures and maintain accurate valve motion. It also employs precision-sorted needle bearings and hardened roller tips to better distribute load, reduce wear and extend service life in demanding high-capacity engines.
COMP Cams Rocker CB 1.7 7/16in Ultra Pro
