hmm
I dont know what the running temp of the tourque converter should be. But i do know that the 3.8L Supercharged engines are supposed to have electric lockup TCs. Just like turbo Buicks and other power aspirated cars, they dont produce constant torque unless your laying into the throttle, thus it is common for a non electric lockup to drop in and out of OD and 3rd. This creates a -thump- when driving at certian speeds, then a high rev them another -thump-. This can potentially really tear up an AOD. My friend had a modifed T-Type (Buick 3.8L Turbo non-IC) that someone dumped a Turbo-350 trans into. It suffored from the lack of torque problem at cruising speed, and eventually the dumping in and out of gear sheared off the bolts for the flexplate. When we dropped the orignal back in (came with the car when purchased) the problem whent away, cause it was adjusted for the fluxuations in torque. So In summary, if your expirenceing the randomly droping out of gear, its likely producing excess friction, and excess friction = Heat, excess heat = excess friction, excess fricton = even more heat. So Possibly thats the reason the TC is warmer than the rest of tranny. But this is only a shot in the dark, cause i dont know the running specs for the AOD in an SC. My SC locks up in OD at 45 and will remian there untill it slows to 40 (when crusing). ...Good luck