Description

Ultra Pro Magnum Rocker Arm Set w/ 1.7 Ratio for Chevrolet 396-454 w/ 7/16" Stud Ultra Pro Magnumââ??¢ 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.&#x0D <ul>&#x0D <li>Chevy V8 396-454 c.i.d. - 7/16" Stud - 1.7 Ratio</li>&#x0D <li>Investment cast 8650 chromemoly body and arched web-like design deliver increased strength and rigidity while still reducing the moment of inertia.</li>&#x0D <li>Unique black oxide exterior finish helps prevent corrosion and increases durability.</li>&#x0D <li>Optimized retainer and valve spring clearances allow for use of most diameter springs retainers and +.050" locks without clearance or fitment issues.</li>&#x0D <li>Feature Oversized trunnions precision-sorted needle bearings and hardened Roller tips.</li>&#x0D <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>&#x0D </ul>

• Specifications

  • Engine Family: Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
  • Maximum Valve Spring Open Pressure: 850
  • Rocker Arm Material: 8650 Chromemoly Steel
  • Rocker Arm Ratio: 1.7
  • Rocker Arm Series: Ultra Pro Magnum
  • Rocker Stud Diameter: 7/16 Inch