850 hp cummins what u joints

[Chevyguy15]

Wanna pull my 07.5 6.7 and still has stock drive shafts. I wanna make sure I don't break anything. What's a good solid u joint to go to or upgrade the whole driveshaft

 

[takedown95]

If you have the solid rear driveshaft they usually hold up pretty good as long as you're not hopping a lot. The front one tends to break in autos. That's the one I would upgrade if I were you. I can't remember what they come in as stock but the CV joint tends to be the weak link.

 

[Chevyguy15]

I have a 68re trans too. Guess I'll do both then