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COMP Cams Ultra Pro Magnum roller rocker arms for Chevrolet small-block V8 (265–400 ci) applications. These 1.6 ratio, 3/8" stud rockers upgrade stud-mount valvetrain stability and valve motion control for SBC engines. Investment-cast 8650 chromemoly bodies with black oxide finish use oversized trunnions, precision needle bearings and hardened roller tips. Optimized clearances accept most retainers and +.050" locks, handle up to 850 lbs spring pressure and include a lifetime breakage warranty.
COMP Cams Rocker Arms CS 1.6 3/8 Ultra
