SBC Roller Rocker Arms - 1.5 Ratio 3/8 Stud NB/SA

The SBC Roller Rocker Arms - 1.5 Ratio 3/8 Stud NB/SA from PRW Industries are a precision upgrade designed specifically for small-block Chevrolet engine builders and high-performance enthusiasts. These roller rocker arms provide reliable valve actuation at elevated RPM ranges, making them ideal for street performance engines, bracket racing platforms, or weekend warrior projects.

With a 1.5:1 mechanical advantage ratio, these rocker arms enhance valve lift and duration multiplication. The roller rocker arm technology minimizes friction compared to traditional stamped steel designs by utilizing hardened roller bearings at the pushrod contact point and valve stem interface. This reduction in friction leads to more consistent valve timing, improved fuel efficiency, and less parasitic drag on the engine's rotating assembly.

These roller rocker arms are compatible with standard small-block cylinder head bolt patterns, and the NB/SA designation indicates their suitability for non-bowtie and small-angle valve covers. PRW Industries manufactures these components with precision-machined aluminum bodies and hardened steel components, ensuring they can withstand sustained high-RPM operation without deflection or wear. Proper pushrod length verification and preload adjustment during assembly are critical for optimal performance.