That's unfortunate, wonder if it's something in the way the different tuners are setting these shifts up. I've seen some cars tear through OEM clutches at 700 wheel, and others go season without slip at 950+. Doesn't make sense that 924 wheel would slip Mcleod clutches2019 GT TT 924 RWHP Mc Leod clutches in the 10R80 smoked, no way it will handle 1200 RWHP without adding more friction plates. IMO TH 400 would be your best choice for a reliable trans at that horsepower level.
Tuning was done by Lund so I'd hope that's not the issue, once you dissect the 10R80 and understand what clutch packs are applied in what gears it becomes clear why it won't work with the stock clutch count. You also have to take into account that turbo cars generally make more torque but in this case it was only 741 lb ft, having the torque reduction turned off may also be a contributing factor. The fact remains it did smoke the Mc Leod clutches and no 2 cars are the same so what works for 1 car may not work on another, I am currently trying to get the steels machined down to allow for more frictions to be added. It should also be noted that the trans did NOT skip a beat and there was no indication of any problem, the shift points were bang on what was commanded in the tune. I am building a sleeved block and thought it was a good idea to tear the trans down while it was out to have a look, so these other cars that have no issues may seem that way but until a teardown is performed no one will know for sure if there is signs of slippage or not. I heard rumors of a new friction material coming out but a simple phone call to the Raybestos engineer confirmed that's BS. They said this was the first time any problem was reported and have stated the GPZ material is the latest and greatest, there is nothing on the drawing board at this time. I also contacted Exedy and the engineering department has had a 10R80 in their possession for almost 1.5 years and nothing has been developed as of yet so I wouldn't hold my breath on a better option anytime soon from either company.
I don't understand why your B was smoked it's only on in 1st, 2nd, 8th, 9th, 10th, & reverse, so either you are going WOT in overdrive gears or in reverse lol.
Possibly in 1st gear A, B, D, & E are applied, and in 2nd gear A, B, D, & C are applied you'd think that 4 clutch's being applied in both gears would do the job but who knows. You could leave in second but B would still be applied and probably have the same issues.
I’m also Lund tuned with the torque reduction removed. I’m sure that doesn’t help clutch life. But man when that next gear hits..... lol
