I have a 1991 F250 with a &.3 diesel mated to a E4OD automatic trans. Its a 2wd. Does anybody know what the rear differential gearing is? I don't like that as soonas one wheel spins all the power goes to that wheel. Is there any good way to fix this besides swappin in a limited slipor air locker axle? Are there any kits to install a limited slip for this year truck and axle? Not looking for air lockers because I dont have on board air supply. Any info much appreciated

 

Ford Axle Code Chart .: Articles Match your door sticker axle code to this chart. Or there should be a tag on the axle with the ratio.
Plenty of options for LSD/locker for your axle.

 

thanks. ill have to check the door sticker when i get home from college. i was hoping to buy some parts so they would already be at my house when i arrive from college. No big deal. Ill have to do the work when my dads away because he already thinks i spent to much time on the truck haha