Just alittle confused as to which OE lifter from comp to use, and the differences between the High energy and promag OE. Ive read the comp r post but didnt run across a PN for the oe lifter the forum recommends. Whats the difference in the 2 anyway

 

850-16 is the oem lifter for our application.

Pushrod length will change some with these.

Comp R's have a retainer problem.

 

yea, I have been keeping up with the comp r thing, Lloyd recommended replacement oe lifters, didnt want to bug him with the small stuff, Im accumulating my parts before the tear down for the heads.