if i put the tr227 in my 6.0.....do i have to change the pushrods?....what length and what are the best ones to get?....and would i have to change rocker arms?

 

Pushrods are highly recommended, but you can re-use the rockers. Most will recommend a 7.4 length pushrod, but my personal belief is that you should get a pushrod length checker to make sure. Since higher lift cams have a smaller base circle, a 7.425 length pushrod may be necessary. Comp Cams makes different length hardened push rods, and I belive that Thunder Racing makes 7.4's.