SBC Shaft Rocker Arm Kit - 1.65/1.6 Ratio

The T&D Machine 2251-165/160 is a shaft-mounted full-roller rocker arm kit engineered specifically for Small Block Chevy engines equipped with Brodix Track 1 cylinder heads. It utilizes an intake ratio of 1.65 and an exhaust ratio of 1.60 to optimize valve lift and duration for high-performance applications.

Constructed for strength and reduced friction, this kit features a full-roller design that minimizes side loading on valve stems. The shaft-mounted configuration provides superior stability compared to stud-mount systems, ensuring consistent valve train geometry under high RPM conditions.

Installation requires specialized engine assembly knowledge, including proper valve train geometry setup and lash adjustment. Because this is an internal engine component, ensure all clearances are checked and parts are cleaned before assembly. This kit is intended for competition use only and may require additional modifications for proper fitment.

This kit is designed specifically for Small Block Chevy applications using Brodix Track 1 cylinder heads. It is not a universal-fit part and will not function correctly with factory or other aftermarket cylinder head types. Always verify head compatibility before installation.