You can make the MT82 work pretty good if you spend enough money on it. Stuff like the Syncrotech carbon kit and some uprated gears, especially 3rd gear.
Then you need a rebuilder that can and will do work to precise tolerances, most trans guys won't spend the time on it, they just chuck it back together.
Then you need a good racing clutch.
Then pick your favorite secret sauce for fluid.
But most of all, you need a good trans cooler. I can't say that enough.
The bottom line is the MT82 is built on chinese engineering and labor and it costs money to fix that.

Just a note. the MT82 we get in our Mustangs is Chinese built, and obviously built to the cheapest standards possible. I was offered a brand new one for US$2000, direct from the factory in China. The design its self, is not Chinese and it has been around for a while. Specially without the integrated bell housing. What I like about the Calimer Stage 3 is its supposed to be all new parts with much better specs.

My gearbox builder here in Chile is also is the mechanic for the faster Porsche gt4 cars, and he said that they are going through a transmission a season when they started using R7's. Made me feel a little better.

But as has been said before many times in this chat. If you use a MT82 on the track for more then 10min flat out, then you really need to add a tranny cooler or it will die. The internals come out a lovely shade of blue.

Mad Hatter said:

Just a note. the MT82 we get in our Mustangs is Chinese built, and obviously built to the cheapest standards possible. I was offered a brand new one for US$2000, direct from the factory in China. The design its self, is not Chinese and it has been around for a while. Specially without the integrated bell housing. What I like about the Calimer Stage 3 is its supposed to be all new parts with much better specs.

My gearbox builder here in Chile is also is the mechanic for the faster Porsche gt4 cars, and he said that they are going through a transmission a season when they started using R7's. Made me feel a little better.

But as has been said before many times in this chat. If you use a MT82 on the track for more then 10min flat out, then you really need to add a tranny cooler or it will die. The internals come out a lovely shade of blue.

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How long do the Stage 3's last you?

I have to check, But it looks like the first one lasted almost two seasons. I then locally rebuilt it with some gears, bearings and syncros. It promptly died as the 23 spline broke and left a mess in side. I regret sending that box for rebuilding to where I did, you live and learn. Since then, the car is sitting with a rebuilt Stage three with mostly new parts and with the work done by a decent shop. Hoping to get it back to the track next year if the my plans work out ok.

Lessons learnt for longer lasting transmissions...
1) Don't shift over 7800rpm
2) Cool the dam thing and run a filter on the cooling lines.
3) Take a fraction of a second longer to make the shift.... hard in road racing when you are fighting wheel to wheel with da Germans.
4)Oh, and do not shift over 7800rpm... Just in case you missed point one.

If the Calimer does not last a semi decent amount of time.. then probably think about a Magnum XL again. Its all @Fabman 's fault, when his second XL died I got gun shy. Repairing a Calimer Stage 3 costs me about $3000 average (all in) where as a new XL and drive shaft will cost me about $10,000 with duties and freight etc.

Getting Magnum XL down their is expensive. I can see why you keep trying to dix MT82s. The Tremec kit with necessary wiring, fluid and shipping was $4,300 about 2 years ago. It is covered by a 3 year warranty. This was cheaper than a Calimer stage 3 with 26 spline shaft and no warranty. I sold my MGW and driveshaft which covered the cost of a new driveshaft.

Mad Hatter said:

If the Calimer does not last a semi decent amount of time.. then probably think about a Magnum XL again. Its all @Fabman 's fault, when his second XL died I got gun shy. Repairing a Calimer Stage 3 costs me about $3000 average (all in) where as a new XL and drive shaft will cost me about $10,000 with duties and freight etc.

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Yeah same cost challenge with the Tremec for me down in New Zealand. Though my man math says to change it over before the MT82 dies. Then if I ever sell the car I can reinstall the MT82 to return it to standard and resell the Tremec on the side to recoup costs. Therefore the total upgrade cost is actually low, it's just a cashflow impact.

FilxNZ said:

Yeah same cost challenge with the Tremec for me down in New Zealand. Though my man math says to change it over before the MT82 dies. Then if I ever sell the car I can reinstall the MT82 to return it to standard and resell the Tremec on the side to recoup costs. Therefore the total upgrade cost is actually low, it's just a cashflow impact.

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What is the reason TR-3160 swaps are not common ? They should be available in any dealer worldwide and considering are in GT350/Mach1/Dark Horse there should be plenty of them.

My last two cars have had the Tremec, the 2022 Mach 1 and now the 2024 DH. Both of these cars also have engine/trans/diff oil cooling from Ford. At least mine did. All the PP cars should have had engine/trans/diff oil cooling but didn't.

The Tremec is an OK trans, though really I haven't pushed either the Mach 1 and the DH as hard as I used to with my '16 S550 that had a hardened Syncrotech MT82 rebuild.

My experience with the MT82 was once you got a good racing clutch (Most Important Upgrade Ever For An MT82), and a rebuild on the MT82 with Syncrotech or equivalent parts you will have a very durable trans. Bonus in my case was the MT82 ratios are better than the Tremec for the tracks I run. The MT82 can be made to live on track, you just need to get the right parts, cooling and the right guy to rebuild it.

But, making the MT82 durable probably cost about as much as a Tremec swap would have. Live and learn.

I like the ratios of the MT82 as well and the clutch is Definitely a major point, but in the end the stock internals dont like be pushed much with +500rwhp and high rpm shifts. I imagine that the later MT82 builds are probably better then the one that came in my Boss. That thing broke if you looked at it funny.

I find research on this subject confusing because so many people just refer to "the Tremec." The torque rating for the much loved Tremec 3160 in the GT350/Mach1/DH is only 430 lbs, not that much different than the approx. 400 lbs of the MT82? I've seen reports the 3160 has more or better synchros but that seems like something that can be addressed with the standard AMP or similar MT82 rebuild kits, no? Yes on cooling but not all Tremec 3160s have the integral cooler. The Tremec Magnum XL has a torque rating of 700 lbs, very big difference but of course that's not the Ford transmission that everyone raves about and loves.

stevbd said:

I find research on this subject confusing because so many people just refer to "the Tremec." The torque rating for the much loved Tremec 3160 in the GT350/Mach1/DH is only 430 lbs, not that much different than the approx. 400 lbs of the MT82? I've seen reports the 3160 has more or better synchros but that seems like something that can be addressed with the standard AMP or similar MT82 rebuild kits, no? Yes on cooling but not all Tremec 3160s have the integral cooler. The Tremec Magnum XL has a torque rating of 700 lbs, very big difference but of course that's not the Ford transmission that everyone raves about and loves.

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The T56 Magnum XL was introduced back in 2012 due to the failures seen in the MT82. It is basically the Tremec 6060 that was used in the S197 GT500's with a removable bell housing. Since it is sold as a kit it is an easy swap. The 3160 was used in some of the S550's, so it may be an easier swap in the later cars.

Its odd, but you do not see any Tremec 3160 swap kits. And some 3160 equipped cars swap to the Magnum XL.

Mad Hatter said:

Its odd, but you do not see any Tremec 3160 swap kits. And some 3160 equipped cars swap to the Magnum XL.

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I found this video interesting comparing 3160 and Magnum XL The point around the benefits (at least on the track) about mainly shifting between 3rd and 4th on the Magnum XL, i.e. across the middle of the gate, seemed to make sense to me.

Mad Hatter said:

Its odd, but you do not see any Tremec 3160 swap kits. And some 3160 equipped cars swap to the Magnum XL.

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Tremec really pushes the Magnum XL for aftermarket swaps in the US. The Temec distributors I looked at did not even sell the 3160, let alone a swap kit. It looks like you can only get the 3160 here from a Ford dealer or on the used market. It wouldn't be hard to put together your own swap kit with junkyard parts or from the parts counter of your local Ford dealer if you wanted to go that route.

And so...... this Sunday, I have arrived at this inevitable fork in the road. Thanks all for the inputs and anecdotal evidences. I'm gonna pull it and take a look at things, probably have my mechanic crack it open to see what it's ultimate demise was. Not sure yet what direction I'll take. This has been a useful conversation for me. Thanks!!