Drive shaft nut stripping

[CrazyB]

I am trying to remove he diff and no matter what i try the nuts on the drive shaft are stripping, even if I use box wrench. i tried pb and I tried torch nothing gets them loose. I was wondering how is the bolt attached on the other side as it sounds like I might have to cut the nuts and the bolt off o get the diff out.
Cause nothing works and I can't get a socket in there either

[Eric Giles]

I believe the bolts are splined and fit thru the driveshaft flange. Is the entire bolt/nut assembly turning, or are you actually stripping the outside of the nut trying to remove it? I've never had them be that hard to remove...

[CrazyB]

no just the outside nut is stripping, this suckers are on super tight

[Danny]

Get some penetrating oil and let it sit and stew for an hour or so, then have at it.

[Eric Giles]

Some box end wrenches are of better quality than others, and I have had some cheaper ones slip off of these same exact nuts while trying to remove them. If they are already stripping, using a box end wrench isn't going to help any longer. Personally, I would find the largest pair of vice grips that will fit in that area and clamp down on them like crazy-get the tightest grip you can on them. Let them sit in PB for a bit more, then start trying to break them loose again. If that fails, cutting them off may be your only option.

Good luck.

[CrazyB]

Well I just drilled the nut off and then just split it, luckily did not even touch the threads