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The COMP Cams Ultra Pro Magnum roller rocker arm is a stud-mount rocker with a 1.7 ratio and 7/16" stud for Chevrolet big-block 396-454 ci V8 applications. Investment-cast 8650 chromemoly construction and black oxide finish provide added rigidity and corrosion resistance. Oversized trunnions, precision-sorted needle bearings and hardened roller tips reduce moment of inertia and are rated for use with spring pressures up to 850 lbs.
COMP Cams Rocker Arms CB 1.7 7/16 Ultra
