RRR he's working on a late rocker shaft 360 with 308 heads and roller cam now regound by Oregon cams to RT specs
he has 3 Darts one of which is a Slant Six
It is obvious that core selection of the donor core is important the early Dakota 318 has the largest stock HR but you have to look at fuel pump etc
do your roller lifters have oil holes in the cups?
in any case oil holes in the pushrods do not hurt
the wear is in a circle around the lower half of the ball not at the bottom which should not touch
parts do not last if they touch on a small point or area
ask anyone who has put early pushrods into late larger ball lifters (vice versa does not match either) IDK if the early parts are still readily available) later works better if you are doing an early motor but get matching partsproblem happens when someone gets a cam and lifter kit with the newer style lifters and trys to use old pushrods- been awhile but I do not think they are even the same length- but Oh well
