Go Back   Club Lexus Forums > Lexus Model Forums > GS Models > GS - Second Generation > Performance
Sign in using an external account
Register Forgot Password?

Supra MKIV LSD 6speed Vs. 5 speed vs auto

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 07-09-14, 09:20 AM   #1
angus
Lead Lap
Trader Score: (3)
 
angus's Avatar
 
Join Date: Jan 2007
Location: WA
Posts: 518
Default Supra MKIV LSD 6speed Vs. 5 speed vs auto

Okay, so I know there are tons of threads talking about the auto MKIV diff swap, and I have this in my GS4.

What I would like to know is why the 6 speed TT (or 5speed JDM TT) supra diff doesn't fit the GS.

Is the manual supra subframe different? Is it the axles? Both?

Could one swap the entire subrame from a supra?
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
angus is offline   Reply With Quote
Old 07-09-14, 12:55 PM   #2
MotoEvo
Rookie
Trader Score: (3)
 
Join Date: Feb 2012
Location: CA
Posts: 60
Default

Aside from being physically larger, I believe the diff flange is different, and also the number of bolts are different. Ours are 10 bolt and the TT 6 speed is a 12 bolt design. I don't know what it would take to retrofit a 6 speed differential though. I'm guessing it would involve a subframe swap. The TT axles are larger in diameter, but I also don't know if the spline count is different. Hopefully someone with more knowledge and experience will chime in.
MotoEvo is offline   Reply With Quote
Old 07-14-14, 08:04 PM   #3
buckwheat
Driver
Trader Score: (0)
 
buckwheat's Avatar
 
Join Date: Apr 2011
Location: washington
Posts: 145
bucknuts562
Default

the supra auto lsd fits right in the lexus sc 300/400 setup
buckwheat is offline   Reply With Quote
Old 07-14-14, 08:29 PM   #4
buckwheat
Driver
Trader Score: (0)
 
buckwheat's Avatar
 
Join Date: Apr 2011
Location: washington
Posts: 145
bucknuts562
Default

Blk97SC300
Lead Lap
Trader Score: (4)

Join Date: Dec 2005
Location: CA
Posts: 760
Cool Auto Supra TT Diff Installed (LSD and 3.76 gears)
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

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

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

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
__________________

1997 Lexus SC300. 5 speed. T67 Turbo. 464 rwhp @ 20psi.
buckwheat is offline   Reply With Quote
Old 07-14-14, 08:29 PM
 
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
GA WTT Supra MKIV V160 Getrag 6 speed with ATF Stage 3 built Auto TT Transmission gerrb SC400 / 300 Classifieds 6 09-08-13 03:59 PM
Which mkiv supra fan and shroud do I need for swap? xspsi6 Performance & Maintenance 9 03-17-13 04:06 PM
Anybody instaled a MKIV supra diff??? (I just did and had a nasty suprise) rwdfreak Performance 17 01-01-13 09:52 PM
GA WTT : 97 Side Skirts Rear bumper Rear lights , s2000 seats , TT Auto Diff gerrb SC400 / 300 Classifieds 13 11-02-12 07:09 AM
Aristo - jzs147 - Torque converter moejz GS - First Generation 9 06-15-09 06:51 AM


Tags
376, lsd, mk4, sc, speed, supra, top

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 06:58 PM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info