just a quick question.

i don't really see how they wouldn't work, but just thought i'd make sure.

would proform roller rockers P/N 778-66915C work with GM performance parts LT4 valve springs, P/n 12495494.

a

nd just to be sure, the rockers will work with stock LT1 heads right? without new seats or guides or anything else.......

 

The only concern I would have is if they are wide enough to give clearance problems with the valve covers. The springs are the same size as stock so that should not be a problem.