I'm looking for a clutch for my 87 supra with a W58. It is currently getting a motor rebuild and GTE electronic swap with numerous other performance upgrades to get it in the 350-400whp range. I'm looking for a clutch for my transmission and from the research I've done the only difference from 86.5-88 vs 89+ is the release bearing. However on Spec's website their stage 3+ clutch for an 87 non turbo will hold 380 tq but the 90 non turbo stage 3+ clutch is rated at 465. That is what has me confused, if only the release bearing is different why such the large gap in the ratings? Looking on ACT's site where they list out the p/n for pressure plate, disk, and release bearing the only difference from 87 vs 90 is the p/n for the release bearing and they rate the clutches the same for either year.
Link for Spec 87 clutch
http://www.specclutch.com/cars/Toyota/Supra/1987/Single
Link for Spec 89+ clutch
http://www.specclutch.com/cars/Toyota/Supra/1989/Single
Also if anyone has a good suggustion for a clutch that supports 400-450tq I would appreciate it. I would prefer a full disk(reason for looking at spec) but have also considered a 6 puck sprung like what ACT makes. I also understand it will be at the upper end of this transmissions power handling and do in time plan to switch to a r154. The car will be street driven with some autocross/drag racing on local track days.
Link for Spec 87 clutch
http://www.specclutch.com/cars/Toyota/Supra/1987/Single
Link for Spec 89+ clutch
http://www.specclutch.com/cars/Toyota/Supra/1989/Single
Also if anyone has a good suggustion for a clutch that supports 400-450tq I would appreciate it. I would prefer a full disk(reason for looking at spec) but have also considered a 6 puck sprung like what ACT makes. I also understand it will be at the upper end of this transmissions power handling and do in time plan to switch to a r154. The car will be street driven with some autocross/drag racing on local track days.
