I've got a 355 that has a mild cam (specs)

Intake Exhaust
Duration @ .050 212 218
lobe lift .325 .330
Gross valve lift .488 .495

Lobe separation 112

Part number 08-501-8

My starts with the following. I'm in the process of changing out the valve springs and noticed that the lifters were rollers. Thought to myself why put the stock stamped rockers back on since they are already off so I'm thinking about going with roller rockers. I have two questions though. If I run them do i have to upgrade the push rods since theres a new cam and valve springs and rockers? I know that I want the self aligning rocker arms for ease of setup but not sure what stud size are on my 64cc centerbolt heads. What I would like to know is what rockers should i use that will clear my valve covers and give me more horsepower? Links and part numbers would be nice.. thanks.. I'll try and grab the specs for the valve springs but they are the ones reccommended for the cam.

 

3/8 stud
Reuse your pushrods IF keeping SA rockers
If you change to non SA then you need new pushrods and proper guide plates