Ran 33s on 30 for a while, locked with 4:56. Beat the snot out of it. Also ran 36s and broke 3 axles, once backing up and into a tree with the wheel turn full lock (couldn't see) once at devils playground, once on first ledge on Daniel with the rev limiter singing in 2nd gear. All three incidents were on 36s and beating it very hard.
Its so easy to change a shaft in a 30, I just always kept spare sets and rolled on. Now I have a 44 in the front and can beat on it pretty good with the 36s. Funny thing is the ears and u joint in the shafts of my Ford Dana 44 are the exact same size as the Dana 30.
