Wrong, you must have a defective understanding of how your transfercase works. Look, I'm not trying to be a jerk, and I think if you reread my posts, you'll see I'm one of the only ones in here trying to be helpful at this point. The NP231 locks the front and rear driveshafts together via a couple of sliding collars and a chain. There is no differential, it just has everything locked together, spinning at the same speed. There is no torque split, just some gears and shafts all locked together. If you happen to have an NP242 like some XJ's and ZJ's, then you have the option of "part time" or "full time" 4x4. Full time 4x4 engages a coupling which allows torque differential between the front and rear. That is like an AWD system that allows you to drive on pavement when in 4x4 without bucking.