ummmm Ben, we do have lsd's the only thing different is Ford calls it Trac-Loc. that's like saying "F-bodies don't have lsd's, they have posi-trac" get where i'm coming from?

 

Ok folks, update

Last night at my sisters apartment I was on a slight downhill, but uphill in reverse, and my rear driver side wouldnt spin at all. Earlier that day, I remember leaving 2 tire marks in my driveway from trying to go up it in reverse, and the same happened today, now wth? Just weird that last night in my sisters apartment, that rear driver tire just did not wanna move at all.

 

They're both on equal footing? If not, you're just slipping the clutches. They aren't the strongest diff's you can get, but work when both tires are on equal footing.

An LSD should work in both directions....and LSD is a generic name. Posi, Trac-Lok, etc. are brand names.