COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy (Set of 16) Mark Williams Enterprises Fully adjustable mechanical advance

Fully adjustable mechanical advance

Durable Fully Welded 16 Gauge Aluminized Steel

wood and fiberglass

Mechanical Instruments Provide Trusted AccuracyAuto Meter Gauges are the number one choice of professional racers worldwide

3/4 Inch Shackle With 7/8 Inch Pin

COMP Cams Ultra Pro Magnum Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.70 Ratio - Big Block Chevy (Set of 16) Mark Williams Enterprises Fully adjustable mechanical advanceThe Ultra Pro Magnum Roller Rocker Arms for Chevy V8 396 454 applications not only live up to the lofty standards of the original Pro Magnums, but they also take stud mount rocker performance, stability and value to a whole new level. These rocker arms feature a 7 16" stud diameter and 1. 7 ratio. The 8650 chromemoly material and arched, web like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing