Auto Supra TT Diff Installed (LSD and 3.76 gears)
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I installed a rear end (the entire pumpkin) from a 1997 automatic supra TT. The ONLY thing that needed to be swapped over from my stock sc300 pumpkin to the auto supra tt pumpkin was the yoke.
A 35mm deep socket is needed. It was a major PITA finding this, but a local Kragen had exactly what I needed. It only took a couple hours to swap the pumpkins. Very simple, straight forward, nothing too difficult. A friend helped me, cuz the rear diff is pretty damn heavy. It's definately easier with an extra pair of hands.
The car handles better, launches better, and overall feels a lot more solid. Oh, and it leave two nice 275mm wide rubber marks too if I feel like doing something crazy![Wink](https://www.clublexus.com/forums/images/smilies/wink.gif)
Not only do I now have a torsen limited slip diff installed, I'm also using the 3.76 gears. I couldn't stand the 4.27 gear ratio that came with my automatic sc300 rear end. This will increase my top speed from about 160mph (old gears) to a hair over 180mph (new gears).. not that I'd ever be doing anything like that anyway![Stick Out Tongue](https://www.clublexus.com/forums/images/smilies/tongue.gif)
LSD and longer gears are nice- it'll be definately to my advantage with a 67mm turbo. I'll be in each gear longer, and even be in the powerband longer. It's actually noticeably faster at higher speeds now![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
To clear things up, the rear end from an auto TT supra IS a direct bolt on "upgrade/mod" for a sc300- as long as the yokes are swapped.
-Allen
A 35mm deep socket is needed. It was a major PITA finding this, but a local Kragen had exactly what I needed. It only took a couple hours to swap the pumpkins. Very simple, straight forward, nothing too difficult. A friend helped me, cuz the rear diff is pretty damn heavy. It's definately easier with an extra pair of hands.
The car handles better, launches better, and overall feels a lot more solid. Oh, and it leave two nice 275mm wide rubber marks too if I feel like doing something crazy
![Wink](https://www.clublexus.com/forums/images/smilies/wink.gif)
Not only do I now have a torsen limited slip diff installed, I'm also using the 3.76 gears. I couldn't stand the 4.27 gear ratio that came with my automatic sc300 rear end. This will increase my top speed from about 160mph (old gears) to a hair over 180mph (new gears).. not that I'd ever be doing anything like that anyway
![Stick Out Tongue](https://www.clublexus.com/forums/images/smilies/tongue.gif)
LSD and longer gears are nice- it'll be definately to my advantage with a 67mm turbo. I'll be in each gear longer, and even be in the powerband longer. It's actually noticeably faster at higher speeds now
![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
To clear things up, the rear end from an auto TT supra IS a direct bolt on "upgrade/mod" for a sc300- as long as the yokes are swapped.
-Allen
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haha, that's awesome. thirrrty foo fifty! ![Stick Out Tongue](https://www.clublexus.com/forums/images/smilies/tongue.gif)
My speedo is off now. It reads 12% too slow (because of the change in gear ratio/ ring gear).
I ordered the YELLOW BOX (speedometer re-calibrator).
http://www.blackrobotics.com/
$100. Hope it works. A few s2000 friends of mine use this thing- and they say it works great. All I need to do is find the speed sensor pin on the ECU. Does anyone know which PIN it is?
![Stick Out Tongue](https://www.clublexus.com/forums/images/smilies/tongue.gif)
My speedo is off now. It reads 12% too slow (because of the change in gear ratio/ ring gear).
I ordered the YELLOW BOX (speedometer re-calibrator).
http://www.blackrobotics.com/
$100. Hope it works. A few s2000 friends of mine use this thing- and they say it works great. All I need to do is find the speed sensor pin on the ECU. Does anyone know which PIN it is?
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#10
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I believe the companion flange that connects to the driveshaft was all that needed to be changed: take off the Supra TT companion flange and attach the SC300 flange to allow for a connection to the stock driveshaft to occur. It requires a massive socket to break it loose, but it is not a very difficult surgery.
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I believe the companion flange that connects to the driveshaft was all that needed to be changed: take off the Supra TT companion flange and attach the SC300 flange to allow for a connection to the stock driveshaft to occur. It requires a massive socket to break it loose, but it is not a very difficult surgery.
![Egads!](https://www.clublexus.com/forums/images/smilies/pat.gif)
sc300max- thanks for the compliment
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97-SC300- Are you 100% sure? Come to think of it, I think it is a 3 wire sensor. I'll verify it when I get home, then I'll shoot them an e-mail. It's too bad they're all the way in Australia.
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4.76, you meant 3.76, right? Also, mating the 6spd getrag tranny to the Auto TT diff isn't an issue I assume? I hope not, lol, because that's the combo I bought!