Well, it sounds like you've had pretty good luck with LSDs; I never have. Mind you, I'm speaking mainly from experience on my '83 Bronco with 4.56s and 35x12.50s (my F-150 has the 3.73s but 35x12.50s as well). Maybe it has to do with taller (I might be confusing taller and shorter right now) gears and/or bigger tires; I've never had a truck on stock wheels and tires (Bronco bought used, already lifted; F-150 bought new but already lifted and with bigger tires done by 4 Wheel Parts via DSI).

I don't know why Ford would make it so you have to be in 4WD to lock up the rear, maybe to make the Raptor more exclusive. The ability to lock in 2WD seems to be an obvious desire.

While I would prefer to be able to lock in 2WD or have LS when unlocked, the open diff with the TC works pretty well; it brakes the slipping wheel to send torque to the other. Of course, I only experience that on slippery roads or very short dirt excursions; if I plan to be off-road for any significant period of time I turn off TC, put it in 4WD, and lock it up.

I think the LSD is an option (maybe standard) on every non-FX4, non-Raptor 4x4.

I think that a locker's the only way to go if you're going to be putting tires in the air, but I also really like having one in the goop in which I've driven in TX or the loose sand in NM.

I don't have any experience with Ox, but they seem nice, simple, and effective.

Cheers,

 

Thanks very much, understood. Good points about the TC, no need for LSd if brakeforce dist (?) works, right

 

Auburn Gear makes an electric lockable diff that also is a limited slip too.

~ Noel