Honestly I wouldn't even think about dropping a Cummins without putting an Allison beind it. Changing the transmission and the dif is on the "probably going to happen" list anyway.
Hey guys I am pretty new here. I got my hands on a 78 GMC Sierra with a 350 5.7l Diesel in it. If I remember right they are the gas block converted over to Diesel. Well long story short the engine got hydro locked. Now I'm in the market for a replacement engine and was wondering what you guys...