GM LS S/S Roller R/A's - 1.7 Ratio

The PRW Industries GM LS Stainless Steel Roller Rocker Arms with 1.7 Ratio represent a high-performance upgrade for LS-series engine builds where valve lift and duration management are critical to horsepower delivery. These full-roller rocker arms reduce friction across the valve train while maintaining precise geometry, making them a cornerstone component in serious LS3, L92, and LS9 engine platforms where reliability under sustained load matters as much as peak output.

The 1.70 ratio specification directly multiplies camshaft lift at the valve—a critical parameter that affects breathing efficiency, fuel atomization, and overall engine response. Constructed from polished stainless steel with an 8 mm pedestal mount design, these rocker arms deliver corrosion resistance essential in high-heat engine bays and extended storage. The full-roller design eliminates the friction losses common in shaft-mount systems, transferring more of your cam's energy directly to valve actuation. This complete 16-piece set covers the full complement needed for a standard LS-series V8 configuration.

Builders selecting roller rocker arms for LS swaps, stroker builds, or forced-induction platforms prioritize reduced parasitic loss and predictable valve timing stability. The stainless construction resists oxidation in both street and track environments. Weight-conscious engine designers and dyno-focused shops rely on precision components like these to isolate performance gains from baseline configurations—where every reduction in valve-train friction translates to measurable improvement at the crank.

LS-series platforms remain the engine of choice for custom builds, restorations, and performance conversions across full-size trucks, hot rods, and specialty vehicles. PRW Industries' Platinum Pro Series positions these rocker arms as a bridge between OEM durability and aftermarket performance, suitable for street application through moderate competition use where valve-train reliability cannot be compromised.

Set quantity: 16 rocker arms (one complete V8 engine set).