What does a single case vs dual case have to do with twisting a shaft? A shaft can be twisted in a stock truck if you come down on a rock wrong

 

well if your using the extra thin wall stock shafts they are going to twist. I always use schedule 40 tubing front and rear so does a lot of people here. I have twisted both before I got duals. also as for smoking the gears in your tcase"running high rpm" your going to be using 3rd and 4th a lot or using 4h 1st and burn a clutch.as compared to duals you got more gear options like 2wd low or 4h low. hey you got to start some where good luck

 

Thanks