What kind of diff is this?

ratio411

Founding Member
Apr 21, 2002
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Pensacola FL
I was given a diff and cover for a 31 spline 8.8" rear.
The diff doesn't have any info on it other than a few numbers.
The parts supposedly came out of a Saleen Stang of unknown year.
The diff was said to be original. Don't know or care about the cover.

I would like to know:

Brand name?
Type?
Is it a locker, or just limited slip? (it has no clutches like Trac-Lock)
Is it considered durable?
Do I need special bolts for the ring gear, or can I just use the ring
gear bolts from my open carrier?
Any other info?


Thanks!
Dave
 

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Trueblue got it dead on.
I checked the part numbers and they match the Detroit Truetrac.
It is a "parallel gear" limited slip. Identical to Torsen's T2 design.

The Stang has 28 splines (I assume), so this thing is going in my F150.
The GT has a LS unit already as well. The F150 is open.
I believe I am going to search out some used 4.11 gears and throw all
these in the truck at one time. I have been wanting to up the 3.55 gears
for a while.

Anyone got some good used 3.73 or 4.10/4.11 gears for an 8.8" rear?;)