SBC S/S Roller R/A's - 1.5 Ratio 7/16 Stud

The SBC S/S Roller R/A's - 1.5 Ratio 7/16 Stud from PRW Industries represent a premium choice for serious small-block Chevy engine builders and performance enthusiasts seeking reliable, repeatable valve train geometry. These full roller rocker arms are engineered for high-lift cam profiles and aggressive engine builds where traditional stamped rockers introduce unwanted friction and inconsistency. The 1.5:1 ratio delivers optimal valve lift multiplication without sacrificing dwell time, making them ideal for naturally aspirated performance engines, street/strip builds, and race applications demanding precision valve actuation.

Constructed from stainless steel, these roller rocker arms feature full needle-bearing roller technology that drastically reduces friction losses compared to conventional stamped designs, translating directly to improved power delivery and component longevity. The 7/16-inch stud mount configuration provides secure, industry-standard attachment to standard SBC cylinder heads, while the full roller design ensures consistent rocker-to-pushrod contact geometry across the entire lift curve. This engineering approach minimizes parasitic losses, reduces camshaft lobe wear, and enables reliable operation at elevated RPM ranges where roller contact becomes critical to engine durability and repeatability.

These rockers excel in street performance builds, circle-track competition, and engine dyno work where measurable valve train efficiency directly impacts horsepower output and fuel economy. The complete 16-piece set includes both intake and exhaust arms, simplifying the purchasing process for full-engine assembly or rebuild projects. Installation requires standard rocker stud height verification and pushrod length confirmation—ensure your cylinder head accepts 7/16-inch stud mounts and validate pushrod geometry before final assembly to guarantee optimal performance and prevent binding or excessive clearance.