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COMP Cams Ultra Pro Magnum rocker arms for Chevy small-block V8 with Twisted Wedge heads, 3/8" stud and a 1.6 ratio intended for intake valves. Investment-cast 8650 chromemoly bodies with black oxide finish provide strength and corrosion resistance. The arched web-like design reduces inertia while oversized trunnions, precision-sorted needle bearings and hardened roller tips improve reliability. Optimized retainer and valve spring clearances accommodate most springs and +.050" locks and support up to 850 lbs open spring pressure.
COMP Cams Rocker Arms CS Tw 1.6 3/8 Ultra
