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COMP Cams Ultra Pro Magnum XD 1.6 ratio rocker is designed for Chevrolet 396–454 Big Block engines using 7/16" studs. Machined from 8650 steel with a billet pushrod seat insert, this rebuildable rocker delivers reliable valve motion and can tolerate high spring pressures. Precision-sorted needle bearings and hardened roller tips help distribute load and reduce wear, making it suitable for endurance, drag and circle track usage where durability matters.
COMP Cams Rocker CB 1.6 7/16in Ultra Pro
