rocker arms fits 3/8 in. stud full roller steel 1.80 ratio chevrolet 5.7l set of 16

• Investment cast 8650 chromemoly body and arched, web-like design increase 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 trunions, precision-sorted needle bearings and hardened roller tips.

The new 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 modern arched, web-like design delivers increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance.