Looking at Detroit Truetrac LSD's.....

 

They're 31.

 

Thanks!

 

Stock is 28 spline. An upgrade would be to 31 spline. I`m pretty sure of that. You should also check out the Auburn Ected differential. Acts as a true LSD until you lock it up. Then it`s locked tight. I`ve done some research and can`t find any instances of failure so far. And the price is very reasonable. Around $600.00 I think. 31 spline axles shouldn`t cost you more than $350.00 to $400.00 for a street/strip type replacement.

Eric

P.S.- And definitaly ditch the stock two-piece drive shaft. A good one-piece alum. unit shouldn`t cost more than $600.00

 

Thanks, I got the Spydershaft...

 

Spydershaft FTW.

Eric

 

31 Spline stock, 28's were on the SN95's and earlier Fox bodies.

 

We have 31 splines stock..... the 28 was in previous gen cars.

 

Our stock differentials also have the same carbon-fiber clutch discs as the ones used in the 03-04 Cobra and the 07 GT500.

 

31 Spline, got it! If the Spydershaft turns out to be balanced (I got a "murmur" at 100+ mph - on closed roads, naturally ), then I'm replacing the stock LSD with a Detroit Truetrac when I do my 4.10's....

 

Wow Marc that would be a nice setup. You won't regret the 4.10s either!

 

Thanks, I just need to work on the wife, and explain why the stocker needs to be replaced...

 

The stock 2-piece shafts are rated for 145 mph at the factory with the 3.55s, so I'd say they are pretty good.

 

Wow, seriously the stock axles are 31 spline? Awesome.

Cool, that takes some $$$`s off my mod list. Learn something new every day.

Eric

 

I wish I would have just replaced everything in the rear end when I had my gears done! Do it right the first time around!

 

That`s a good way to save money on labor. I may try to do that myself. I`m seriously looking at the Auburn Ected differential. Hopefully there will be more user reviews out before I do that. It seems like a really neat unit. Regular clutched LSD when unactivated and totally locked with the flip of a switch. I don`t see how it could get any better. I wonder how it would stand up to power on the street.

Eric

 

I want the Torsen or Truetrac because both don't use clutch packs, they use parallel helical gears...hence nothing to wear out and need replacing...and the diff fluid doesn't require a friction modifier.

 

You should do other stuff untill you really need it For now its like going out of your way to find $400 lug nuts. I guess if you're doing gears though, but sounds pricey for little difference in a n/a car.

 

I grenaded my 8.8/28-spline 2pinion trueTrac. I think they're poorly designed copies of the Zexel/Gleason/Toyoda Torsen differential. I know how they work and why they're supposed to be better. However, the torque biasing from a Torsen is inferior to that of a viscous coupling limited slip, especially one with the carbon fiber clutches.

 

Well, I used the old "honey, you remember how I said the rear tires are always wearing out faster than the fronts for some reason? Well, these new parts back there may help that........"