10yearsafter

I've seen some other posts on this but none really seem to have the answer for my application.

We've got a 351W in a '69 Mach 1. We've swapped out the cam shaft and did a general clean up. Now when we put it all back together, all of the nuts are torked all the way down on the rocker arm studs. At least one of the push rods still has some play in it.

I talked to Federal Mogul, (its their cam) and they said I don't need to use longer pushrods. But I don't know what the solution is. We've tried new stock (8.125 inch) push rods and replaced the lifters again without any better results.

It seems if the push rods were about a 1/4 inch longer, that would solve the problem, despite what Federal Mogul says.

racin66coupe

i would spend the $15 and get a pushrod length checker..

GT350R Klone

Where does the tip of the rocker rest on the valve when it is at peak lift? Center?

Randys66gt

Hope this helps!!!! On the early windsors, they had press in studs that after a few year, PULL OUT some. (Even after getting them back from machine shops, they don't check) Bet if you were to put a straight edge over the top of the studs, you'd notice that a couple are higher than normal. That causes the problem you are having. Good luck!!

69mach1377

+1^^^