BBC Sportsman R/A's - 1.72 Ratio 7/16 Stud

The PRW Industries BBC Sportsman R/A's with 1.72 ratio and 7/16 stud mount represent a proven choice for big block Chevy engine builds demanding reliable rocker arm performance. This roller tip design reduces friction and wear on valve stems compared to traditional flat-tappet designs, extending component life in high-RPM applications.

The 1.72:1 ratio delivers increased valve lift for improved flow characteristics while maintaining stock-compatible geometry—a critical balance in Sportsman-class racing where rules limit modification scope. Steel construction ensures durability under sustained engine loads, and the natural finish resists corrosion in standard garage and shop environments. Each set includes 16 rocker arms, providing a complete solution for both intake and exhaust valve trains on a big block platform.

Sportsman racers, engine builders, and enthusiasts restoring or upgrading big block Chevy powerplants rely on rocker arms that translate cam lift into predictable, efficient valve motion. The 7/16 stud mount integrates with standard big block hardware, eliminating custom fabrication. These rocker arms suit bracket racing, engine freshening, and performance builds where proven, rule-compliant components justify the investment over generic alternatives.

Rocker arm selection affects valve timing precision and component longevity. The roller tip reduces parasitic friction losses and protects valve stems from accelerated wear, particularly important in engines seeing frequent duty. PRW Industries positions these rocker arms as dependable, field-proven hardware for competitors and builders who cannot afford reliability compromises.