BBC Sport Comp Shaft R/A Kit 1.70/1.70 Ratio

The BBC Sport Comp Shaft R/A Kit 1.70/1.70 Ratio from T AND D MACHINE is a precision rocker arm assembly designed for big-block Chevrolet engine builds seeking maximum valve control and durability. This kit is tailored for serious engine builders and high-performance mechanics who require reliable, consistent valve actuation across demanding applications.

The 1.70/1.70 ratio geometry is engineered to optimize valve lift and duration characteristics, making it an essential component for sport and competition engine packages. The rocker arm assembly features a matched pair design with balanced intake and exhaust ratios, ensuring uniform valve train response across both cylinder banks. T AND D MACHINE's precision manufacturing guarantees tight tolerances and consistent geometry that minimize valve float at high RPM.

This BBC Sport Comp Shaft R/A Kit is ideal for engine builders constructing high-RPM big-block Chevrolet platforms for racing, street performance, or competition use. Proper pushrod length verification and valve lash adjustment are required for optimal performance and longevity, making this kit a reliable choice for those looking to enhance engine efficiency and power output.