Ultra Pro Magnum 1.70 Ratio 7/16" Full Roller Rocker Arms

Designed for Big Block Ford, Cleveland, and modified engines, this set of 16 features a 7/16 in stud mount and a 1.70 ratio. The rocker arms are crafted from robust 8650 chromemoly material, utilizing an arched, web-like design to enhance strength and rigidity while reducing moment of inertia and optimizing dynamic balance. These rocker arms are finished with a durable black oxide coating to resist corrosion. Key performance features include oversized trunions for superior stability, precision-sorted needle bearings to handle high-load valve springs, and hardened roller tips for maximum performance and dependability. The design also incorporates optimized retainer and valve spring clearances, allowing compatibility with most common spring diameters, retainers, and +.050" locks without fitment issues.