The output shafts are not "weak". But they do fail. I had one break at a lot less power and no transbrake.
I did break a ring and pinion at some point in the years prior, that may have started the "crack".
I expect to break it in the near future, lol.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 4 speed, Dana 60
'71 Demon 340, no drivetrain, on blocks behind the barn
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
| 
