The Ultra Pro Magnum Roller Rocker Arms for Chevy V8 265-400 applications not only live as much as the lofty standards of the unique Pro Magnums, but additionally they take stud mount rocker performance, stability and value to a complete new level. These rocker arms feature a 7/16″ stud diameter and 1.52 ratio. The 8650 chromemoly material and arched, internet-like design deliver increased strength and rigidity even as still reducing the instant 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 without equal in performance and dependability. Optimized retainer and valve spring clearances allow to be used of most diameter springs, retainers and +.050″ locks without clearance or fitment issues.
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Fit type: Universal Fit
