Installing Pushrods on 318 with 302's

bschubarg said
Ground the pushrod holes and it is all fixed..... so the point is.... if you are attempting replacing the roller with a performance hydraulic cam, pay attention to pushrod clearance.....

Good to check everything... but your issue is not caused by simply putting a flat tappet cam into a roller block.

You have either over size push rods or jacked up machining.

You dont even need over size push rod holes till you go roller...so how else would you end up with interference between the push rod and head. lol