This innovative tool actually slides down into the lifter bore and rides on top of the camshaft in order to measure lobe lift and base circle runout. Each tool includes two followers: one for solid or Hydraulic cams and one for rollers. Two models are available and each is double ended.
The COMP camhaft checking tool is designed to slide into the lifter bore and ride on the cam lobe. A dial indicator is then attached to the checking tool so that lobe lift and base circle runout can be measured. Fits .904" bores.
For Chrysler (.904" diameter) and Top Fuel (1.000" diameter) lifter bores; Built-in o-ring holds tool firmly in the lifter bore while 1" travel dial indicator (not included) reads cam lift to .001"
