Powerglide™ Tappets These tappets will run in cast iron or aluminum tappet blocks
Recommend fitting the tappets to the blocks with a clearance of .0007" to .0012"
Produced from billet bearing steel
A true center-line for roller life and exact cam timing
State of the art pushrod seat, machined with the same segmented parabolic cup as the JIMS® roller rockers
Hand fit hydraulic unit to a running fit of .0002", with ultra precision air gauging system