sparafucile17

So, I'm looking for a new differential for my 7.5" 10-bolt. I've seen many Auburn and Eaton write-ups but it seems to me that it's just personal preference. But what do you guys think of putting in a Torsen differential from a 4th gen SS into a 3rd gen '91 Z28?

I've got a friend who will cut me a deal for $200 for it. The cheapest *new* Auburn or Eaton I can see is about $380. The diffy unit has about 30k miles on it.

Is it a good deal? I'm looking for the best bang-for-my-buck.

Thanks,
Jeff

respectirocz

the torsen diff from the 4th gen has some nice disc brakes too!

great deal to me

ws6transam

I had a T2 installed in my 10-bolt and it was good enough to get me a 1st place trophy in the autocross at the 2005 NFME event in Memphis TN.

I liked it. Nowdays they have the T2R that's loaded with some preload springs and that helps retain traction when you lift a wheel in a hard corner at the track.

I've recently upgraded to a Moser 12-bolt and it's got the Detroit Truetrac in there, which is similar to the Torsen.

Jim85IROC

FYI, the Torsen wasn't in the SS... SLP removed the Torsen and installed an Auburn limited slip.

I've got one of those take-out Torsens in my IROC and I'm very happy with it. My straight line traction is very good, there's absolutely no chattering around tight corners like with a clutch-style limited slip, and there's also nothing inside that wears out.

ws6transam

You are right about that Jim, but in fact SLP also took out T1 Torsens and installed the heavy-duty T2 Torsen in the 1999 Firehawk. I bought one back in 1999 and installed it in my 1984 axle housing along with some Moser 28 spline racing axles. I wrote it up about seven years ago on this page: http://www.ws6transam.org/10bolt.html

Zepher

I just bought a rear end from an 01 SS and was wondering what diff was in it.
so, the SS did get the Auburn? does it look like a torsen at all?
My eaton had a cylinder in the center to keep the axles out, while the torsen had a rectangular block, and the rear from the SS has a rectangular block.
My old torsen would spin the wheels opposite while raised off the ground (like an open diff), the eaton would spin both the same direction, and the SS rear spins the same direction.
So, what do you think is in the SS rear I have now?

Jim85IROC

If it's out of an SS, it should have the auburn.

Zepher

does the auburn have that rectangular block the keeps the axles out?

01Z

That would make it a Torsen....

Aklaim

Unless you upgraded the diff as an SLP option when you ordered your car, you got a Torsen diff. I have an SS, with no SLP options and i have a torsen diff.

Jim85IROC

Oh crap, that's right, it was an option on the SS, not standard. :doh:

90rocz

I beat on my aftermarket Zexel Torsen with no complaint from it yet, even with a best of 1.65 60'...d@mn seat broke tho.

jonathan_abilene

i love my torsen

Rosco the Iroc

Mine has done well in my 1LE after years of autocrossing and drag raceing.
Get it!

01Z

One thing to understand about the torsen is how it handles the loss of traction. If one wheel were to lose all resistance the other wheel will not engage. In other words, the car is completely without drive. I know this is hard to believe but more than one person has explained this to me with an example of what happened to them.

The only way to get power to the ground in this situation is to apply a very slight amount of braking. This is not the case with the auburn.