Valvetrain

Made in the U.S.A. Compatible Vehicles Years

JIMS - ROCKER ARM SHAFT Made in the U.S.A. Sold each. Compatible Vehicles Y

Prevents misalignment of cover, compromising of seal and potential rocker interference Made in the U.S.A. Compatible Vehicles

JIMS - ROLLER ROCKER ARMS The lightest rocker arm available, but still has superior strength characteristics due to its design. Will accept cams with up to .700" lift at a ratio of 1.625 (stock)...

Cast from 4340 heat-treated chromoly steel Reduce friction in the valve train, providing more horsepower and less heat in the top end Include 660 bronze bushing fit to .0007" - .0012" for the...

Available from JIMS to allow the proper installation of shoulderless valve guides as well as valve seals Made in the U.S.A. Compatible Vehicles

Available from JIMS to allow the proper installation of shoulderless valve guides as well as valve seals Made in the U.S.A. Compatible Vehicles

Standard solid rollers are designed around three working parts The outer wheel/roller has a 27% greater wall size - less harmonic distortion for better tracking of cam lobe Pin bearings are...

Made from 52100 bearing material Includes 4340 chromoly axle Made in the U.S.A. Compatible Vehicles

Shims "average" 47.0 compared to the 46.0 maximum on the Apparent Rockwell Hardness "C" scale For shim-adjusted vehicles

Shims "average" 47.0 compared to the 46.0 maximum on the Apparent Rockwell Hardness "C" scale For shim-adjusted vehicles