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COMP Cams Ultra Pro Magnum XD 1.8 ratio stud-mount rocker is a heavy-duty option for 7/16" stud Chevrolet 396–454 Big Block applications. Machined from 8650 steel and fitted with a billet pushrod seat insert, this rebuildable rocker uses precision-sorted needle bearings and hardened roller tips to reduce wear under high load. The XD geometry and FEA/CAD development improve stiffness and MOI for drag, circle track and endurance use.
COMP Cams Rocker CB 1.8 7/16in Ultra Pro
