Quote:

3/8 .080" wall pushrods with 650lb spring pressure will possibly deflect a heck of a lot more than .020" , will look like bananas when you pull em out , @ least shoot for .145" wall if using 3/8th.





I've never seen any where near that... I use a 3/8
tapered to 5/16 .080 wall moly 7.2 long PR and I
have about .035 clearance to the PR with 800# at
lift... never seen any marks on the PR or the head...
maybe I'm just lucky