hi everyone, i have a 1990 f250 4x4 inline 6 with the ford 10.25 rear end with 3.55 gears, right now i got open diffs, i realy want some limited slip but i dont have that much cash, i was thinking of getting the ford factory traction lok and putting that in the back, possibly something like that for the front???? anyone know anything about this, anyone know where i can get the parts, anyone ever dont this???

 

I've done lots of diffs, but never a 10.25. Mainly GM and the 8.8 in my f150. I installed the factory Traction Lock in my 8.8 and am not very impressed with it. Very limited holding ability. It does OK on the street when I'm on the gas hard, which is what I wanted, but it won't hold in the snow when one wheel gets on a high spot and unloads the other. This unit was brand new 6 months ago. If you're going to spend the money you might as well get a quality part. Most of them aren't any more expensive than the Trac-Lock, but are much better parts. If you absolutely must have two wheels pulling in the rear you can't go wrong with a Detroit Locker. I believe there is also a unit called the Soft Locker that is basically the same but more smooth on the street. If you don't need or want a locker I recommend the diffs from Eaton, I feel they are the best all around diffs on the market and have installed many of them.