COMP Cams Rocker Arms 1610-1 The Ultra Pro Magnum Roller Rocker Arms for Chevy V8 265-400 applications with Twisted Wedge heads take stud mount rocker performance, stability and value to a whole new level. These rocker arms feature a 7/16" 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" locks without clearance or fitment issues. Rocker Arm, CS TW 1.6 7/16 Ultra Pro Mag COMP Cams Ultra Pro Magnum Roller Rocker Arm, 1.6 Ratio, 7/16" Stud Diameter for Small Block Chevrolet for Intakes with Twisted Wedge Head, Single Piece COMP Cams Rocker Arm CS Tw 1.6 7/16 Ult

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