COMP Cams 1630-1 Ultra Pro Magnum Roller Rocker Arm with 1.6 Ratio and 3/8″ Stud Diameter for Boss 302, Cleveland and Ford 429-460 Engine

The Ultra Pro Magnum Roller Rocker Arms for Boss 302, Cleveland and 429-460 Ford 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 3/8 inch stud diameter and 1.6 ratio. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance. A unique black oxide exterior finish helps prevent corrosion and increases durability. Featuring oversized trunions, precision-sorted needle bearings and hardened roller tips for the ultimate in performance and dependability. Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050 inch locks without clearance or fitment issues.