larrym
West Coast Newfy
- Joined
- Jul 17, 2007
- Messages
- 1,285
Good day gents I recently broke a second stock rocker shaft this one was a TA HD, I had a freshly machined motor sitting at home so I assembled it and pulled my old worn out one, had to put a locking dipstick on it there was so much blow by... here is my question I had a buddy set me up with T&D 1.65 rockers I did my research and its a roller cam 212 212 with .503 lift so the change is to .535 by my calculations max lift on springs is .590 so that should be ok heads are ported with bronze guides and the pedestals are ready. How will these rockers affect my current tune up am I going to have to add fuel I fired it up yesterday and had 2 leads backwards on my LS coils lol started and ran on 4 cylinders I plan to take it out and seat the rings tonight just wondering about the tune I run an SD2 chip.