COMP Cams 1618-12 - Rocker Arms, CS 1.6 3/8 Ult. Pro Mag S/A

COMP Cams Ultra Pro Magnum Self-Aligning Roller Rocker Arms, 1.6 Ratio, 3/8" Stud Diameter for Late Model V6 Chevrolet, Set of 12 The Ultra Pro Magnum Self-Aligning Roller Rocker Arms for Late Model Chevy V8 305-350 applications take stud mount rocker performance, stability and value to a whole new level. These rocker arms feature a 3/8" 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 trunnions, 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" locks without clearance or fitment issues. For Late Model Small Block Chevy V8 305-350 applications, 1.6 ratio, 3/8" studs; Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while reducing moment of inertia; Unique black oxide exterior finish helps prevent corrosion, thus increasing durability; Optimized retainer and valve spring clearances allow use of most diameter springs, retainers and +.050" locks without clearance or fitment issues; Feature oversized trunnions, precision sorted needle bearings and hardened roller tips