Regarding WarWagon and ak's remarks:
In most trucks, 4wd is really right rear and left front. Mine is opposite in its full time mode, always left rear & right front, until using btm (brake throttle manipulation) from the torque biasing differentials, it locks front and rear axles. Then locking in the transfer case allows 0 slippage between front and rear. So if there is too much traction and the driver decides to turn too sharply it will snap the half shaft(s).
I have learned huge differences in locking axles. That's why I asked on the other thread about a locker only on rear axle for snowy roads. There are a lot of times when unlocked 4wd performs better than locked rear and front 4wd. I had a bunch of guys on trail runs, sand dunes, at moab, mud, etc argue it with me until the guys with lockers copied what I showed them. Only people without lockers still didn't believe it. Snow is the only thing I don't have a lot of time on. Not just the last decade w/ the hummer but jeeps & trucks also. Which reminds me, any of you guys ever play "flip for pinks" in your area?