COMP Cams Rocker Arms CB 1.7 7/16 Ultra - 1620-12

Ultra Pro Magnum Rocker Arm Set of 12 w/ 1.7 Ratio Chevrolet 396-454 7/16" Stud

Ultra Pro Magnum Roller Rocker Arms for Chevy

Ultra Pro Magnum™ Roller Rocker Arms 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. 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.<ul><li>Chevy V8 396-454 c.i.d. - 7/16" Stud - 1.7 Ratio</li><li>Investment cast 8650 chromemoly body and arched, web-like design deliver increased strength and rigidity while still reducing the moment of inertia. Unique black oxide exterior finish helps prevent corrosion and increases durability.</li><li>Optimized retainer and valve spring clearances allow for use of most diameter springs, retainers and +.050" locks without clearance or fitment issues.</li><li>Feature Oversized trunnions, precision-sorted needle bearings and hardened Roller tips.</li><li>Lifetime Warranty - So strong that we guarantee the Rocker bodies against breakage for life. For use with up to 850 lbs of open spring pressure.</li></ul>