Ernie W

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I recently picked up a 2013-14 GT500 Torsen differential and got a great deal on it. I figured it would be better than putting new carbon clutches in the stock explorer diff. Is the torsen diff a good diff? I've read they are not good for the strip. My ws6 is a 6 speed car I plan on taking to the track some. Mostly a stock lq4 6.0 with headers and exhaust. I plan on doing a head/cam swap in hopes of 400+ rwhp.

MidwestChassis2

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I'll put it this way, I have a GT500 rear end in the shop that is getting a 35SPL S-Trac and new axles because the factory differential could not survive and he has gone through a set of stock axles and aftermarket replacements. I had a buddy go through the same issues with his bolt on Mach 1.

These stock differentials and 31spl axles can't hold up to abuse especially with a heavy vehicle.

dailydriver

I believe that is the Ford Performance/Racing T2R, which IS a very good low power, road racing/autocross/handling type diff.

NOT so much for higher powered launches/60 foots on sticky drag radials/slicks.

Ernie W

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That's what I was afraid of. I'm almost positive it is the T2R differential. The guy it come from ran it in his GT500 for a few months. His car makes right over 750rwhp and runs 9.80s, 6 speed on et pros.

I'll probably just run it and see how it does. I'm building a hybrid 8.8 for my ws6. Engine is a lq4 with full exhaust. Soon to be head/cam so I figure it will be around 400-430rwhp or so. I also plan on running 15x10 with 28'' et pros on the rear.

2QWK4RU 06 GOAT

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If it's the same as the boss 302 torsen, it's different than the other torsen units; I've had a few apart for mods. They are a heavy duty item for sure.

dailydriver

I believe that yes, that is the same Torsen T2R one can buy directly from the Ford Performance catalog, and is the factory option for all of the 'upgraded'/higher model line Mustangs, including the 'Track Pack' optioned ones.

Being for an 8.8, yes, it WILL BE stronger than the T2Rs Torsen made for our 10 bolts LONG AGO, but still not ideal (or the strongest) for sticky tire, BIG power, 60 foots/launches.

It IS so good for road racing/autocross, with it's top of the heap 4:1 bias ratio, that I was actually wanting to do an 8.8 conversion in my car just to be able to use this diff since Torsen (AND Quaife, which might be that much better than the T2R) gave up on any other axle which could be put into our rides.

2QWK4RU 06 GOAT

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Yep, it's great for on road where multiple torque adjustments are needed as the car is tossed around.


It's built very heavy duty with different material than any other torsen I've seen. Torsen over-built this unit by quite a bit; I had a long, receptive conversation with a engineer who was on the design team of it.

One of the units I modded for an IRS car pulls a 4000 lb-plus car with major torque (roots) and a sticky tire. I would be suprised if it failed. High end metal is used in its build, this material isn't used in most other lsd units.

If not needing drop out capability, I'd go this route if going to the Ford side. Then again, I'd try to stay with a GM option and make it fly that way. I have my way with diffs, making weak units hold 2 and 3 times what they were designed for is common for me.

dailydriver

^^^Since I do not have the facilities, equipment, nor skills to weld myself, I would even consider the "over-priced" Hawks 8.8 assemblies, IF they could deliver one WITH the FP T2R installed for not a ridiculous price, and IF it looked VERY WELL MADE/WELDED/REINFORCED, with a decent warranty.

(Remember, unlike everyone else on here, I am NOT drag racing this thing AT ALL, and I will NEVER push more than 400 RWHP through it.)

hiltsy855

iTrader: (35)

Check out TNT Fabrication on The Facebook. Josh builds some stout 8.8's.......

2QWK4RU 06 GOAT

iTrader: (1)

I normally don't build solid axle diffs, I'd like to build a little 10 bolt to the max someday, just to see what I can make it hold. The 10 bolt in my Camaro is a large 10 bolt unit, not the little one.

Maybe one day I'll throw one together for ***** n giggles to see what they can hold after a handful of mods.

stevieturbo

I used a regular T2 for years, best was 9.85 at 148.5 at 3700lbs, M6 that was a 1.5x 60ft


I finally destroyed it last year when I missed a 2-3 shift on the road and got 2-1 lol

Managed to rip the crownwheel flange off the diff body itself. Internal gears have signs of cracking too etc...but they've probably been like that for a while.
But I used it for around 10 years or so, so no complaints. Not a frequent drag racer but it did see varied use, road, track, racing, drag etc.

I'd think one would take a lot of abuse at only 400hp

I replaced it with a Wavetrac diff, it looks like a much sturdier piece.

dailydriver

Also, it is MUCH MORE beneficial for road racing/autocross, having a higher bias ratio than the T2 (and the Wavetrac 'ramping' benefit as well), although a little lower than the T2R.

stevieturbo

My old one was the T2....and yes it did have a habit of spinning one wheel on the tighter stuff..( I had ordered a T2R way back when...long story, it never materialised hence the T2 got used instead )

BUT.....whilst the Wavetrac does seem better, it does still exhibit the same behaviour. I'm at a very tight hillclimb on Saturday, so will get an even better picture of how it performs there, as it's mostly 1st and 2nd gear and was definitely bad last year so it will be a good test this year.