Go Back   Club Lexus Forums > Lexus Model Forums > SC Models > SC 400/300 > Performance & Maintenance
Sign in using an external account
Register Forgot Password?

View Poll Results: Will Supra Auto TT LSD work in sc300 rear pumpkin w/ stock ring gear & pinion shaft?
Yes 77 90.59%
No 8 9.41%
Voters: 85. You may not vote on this poll

Supra Auto TT LSD Install in sc300 pumpkin?

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 03-26-10, 06:32 AM   #61
trancuongv
Lead Lap
Trader Score: (3)
 
trancuongv's Avatar
 
Join Date: Aug 2005
Location: Texas
Posts: 713
Send a message via AIM to trancuongv Send a message via Yahoo to trancuongv
Default

Quote:
Originally Posted by fastegg View Post
hi... what does 6mt, 5mt and 4eat mean ? i have a 1998 LS400 and are looking for LSD solution...

6mt=6 speed manual, 5mt=5 speed manual and 4eat=4 speed automatic transmission.
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
trancuongv is offline   Reply With Quote
Old 03-28-10, 02:47 AM   #62
fastegg
Driver
Trader Score: (0)
 
fastegg's Avatar
 
Join Date: Mar 2010
Location: Australia
Posts: 123
Default LSD swap

Quote:
Originally Posted by Blizzy View Post
Any SC rear end is compatible with the Supra TT Auto LSD. Any SC rear end is also compatible with the Supra n/a LSDs (both 5MT and 4AT).

The only Supra LSD that is not compatible with the SC rear ends is the TT 6MT LSD.

I have personally swapped a TT Auto LSD into an SC300 A/T rear end. I have a good friend on the forums who has done the same swap into an SC400 rear end.
are you guys just swapping the LSD torsen unit ?
fastegg is offline   Reply With Quote
Old 03-28-10, 02:54 AM   #63
fastegg
Driver
Trader Score: (0)
 
fastegg's Avatar
 
Join Date: Mar 2010
Location: Australia
Posts: 123
Default Pm ?

Quote:
Originally Posted by nate579 View Post
Nope it's Open DIff, but from my understanding, TRD LSD Auto will fit SC300/400, there are few 400 on the forum running them, do a search to find out who and you can pm them for more specific information.
you say "you can PM them for more specific info" .... what does PM mean ?
fastegg is offline   Reply With Quote
Old 03-28-10, 03:00 AM   #64
fastegg
Driver
Trader Score: (0)
 
fastegg's Avatar
 
Join Date: Mar 2010
Location: Australia
Posts: 123
Default Kaaz lsd

Quote:
Originally Posted by vntperform View Post
Dejacky: If your interested I have a used Kaaz LSD (Auto) out of my 97 Supra TT Auto with under 500 miles on the lsd for $650 + s/h.

PM me if interested, forgive me for hi-jacking your thread.

BTW, I love your videos on youtube.com
this KAAZ LSD you have should bolt straight up to my 1998 LS400 ring gear ?
fastegg is offline   Reply With Quote
Old 03-28-10, 03:03 AM   #65
fastegg
Driver
Trader Score: (0)
 
fastegg's Avatar
 
Join Date: Mar 2010
Location: Australia
Posts: 123
Default pumpkin

Quote:
Originally Posted by VincentLex View Post
Why don't you use the entire pumpkin? I have a '95 SC300 also and I want to go with a LSD. I was trying to double check to make sure that the pumpkin from a Supra TT is a direct bolt on and what the gearing is so I make sure I buy the right thing. Don't mean to hijack your thread but I'm looking for the same basic info. Any help is appreciated.
when you say 'pumpkin' what exactly are you referring to ?
fastegg is offline   Reply With Quote
Old 03-29-10, 05:50 PM   #66
suprus
Driver
Trader Score: (0)
 
suprus's Avatar
 
Join Date: Sep 2009
Location: arizona
Posts: 121
Default

I have a question... I am going to be using an r154 transmission from my stock w58 so will I be needing to use a different driveshaft if I swap the entire tt auto rear pumpkin???
suprus is offline   Reply With Quote
Old 07-11-10, 10:53 AM   #67
ronricorum
Pole Position
Trader Score: (0)
 
Join Date: Jun 2009
Location: WA
Posts: 398
Default

ok so i am thinking about getting the TRD LSD (3.76 is that right?) and which of the install kits should i get, the TT 5pd or the NA 5spd?

also, i originally was thinking about getting the Cusco RS LSD. what is the ratio for that?
also would i need the install kit?

would you recommend the TRD or the Cusco?

i hate making new topics so i decided to resurrect this one.

thanks for any inputs.
__________________
Lowered2Perfection
H A W A I I

1993 SC300 Diamond White Pearl NA-T // 2009 IS250 Truffle Mica [ML no nav] Stock with some JP stuff
ronricorum is offline   Reply With Quote
Old 07-11-10, 02:10 PM   #68
nate579
Lexus Champion
Trader Score: (4)
 
nate579's Avatar
 
Join Date: Aug 2004
Location: Maryland
Posts: 2,206
Send a message via AIM to nate579 Send a message via MSN to nate579 Send a message via Yahoo to nate579
Default

It's not the LSD that dictates the gear ratio. You can install a LSD in your stock pumpking and still retain your gear ratio. For example, I have TRD in my SC300 pumpking and still have the same gear ratio of 4.27. YOu have to change the ring gear to change the ratio. LSD is just away of getting the power to the wheels.

Some correct me if I am wrong., below are the gear ratio for some lexus and toyota cars. Thank you search function.

If you swap out the whole rearend (pumpkin) of your car with a supra or SC400, with LSD installed then you will have a different gear ratio. But just dropping the LSD in the stock pumpkin. No change, just more grip.

From Lextreme's forum
1993-1998 Supra TT manual - 3.133 (torsen)
1998+ Lexus V8 Cars VVTi - 3.266 (open differential only)
1990-1997 LS400 - 3.62 (open differential only)
1993-1996 Supra TT auto - 3.769 (torsen, 3.77 not the usual 3.76 quoted)
1997-1998 Supra TT auto - 3.769 (open standard, torsen available)

1992-1997 Lexus SC400 - 3.912 (open differential only)

1992-1998 Lexus SC300 manual - 4.08 (open differential only)
1997-1998 Supra non turbo - 4.08 (open standard, limited slip available)
1992-2000 Lexus SC300 automatic - 4.272 (open differential only)
1993-1996 Supra non turbo - 4.272 (open standard, limited slip available)
__________________

2001 GS430 BCP
:NV/ML,TRD SWB, LTuned Mufflers,Skirts and S/S,19x8.5/9.5 Linea Corse z2s,
2006 GX470 Cypress Pearl NAV/ML/DVD and Goodies
1992 SC300 1JZ/5spd:PTE 6262/550ij/264BC-Cams/429HP on the dyno.
2004 Nissan Titan LE/King Cab 4x4

Last edited by nate579; 07-12-10 at 03:53 AM..
nate579 is offline   Reply With Quote
Old 07-12-10, 01:55 AM   #69
mptjimmy
Pole Position
Trader Score: (2)
 
Join Date: Oct 2009
Location: ca
Posts: 223
Default

yup, correct!
mptjimmy is offline   Reply With Quote
Old 07-12-10, 04:48 AM   #70
ronricorum
Pole Position
Trader Score: (0)
 
Join Date: Jun 2009
Location: WA
Posts: 398
Default

ahhh wow haha thanks for clearing that up.

also, i have read that changing the pumpkin can lead to your speedometer not reading correctly. is this true? if so, how would you be able to remedy this?
__________________
Lowered2Perfection
H A W A I I

1993 SC300 Diamond White Pearl NA-T // 2009 IS250 Truffle Mica [ML no nav] Stock with some JP stuff
ronricorum is offline   Reply With Quote
Old 07-12-10, 09:10 AM   #71
cartmill
Lexus Test Driver
Trader Score: (2)
 
Join Date: Dec 2007
Location: Nashville, TN
Posts: 999
Send a message via AIM to cartmill
Default

Quote:
Originally Posted by ronricorum View Post
ahhh wow haha thanks for clearing that up.

also, i have read that changing the pumpkin can lead to your speedometer not reading correctly. is this true? if so, how would you be able to remedy this?
with something like this:
http://www.bluegauges.com/prod_yellow_box.htm

"How it works
The Yellow Box is installed in the vehicle and corrects the speedo signal
in real-time. It can be re-adjusted at any time to correct for changes in
gearing and wheel sizes."
__________________
99 sc300 - stock
93 RX7 - track
cartmill is offline   Reply With Quote
Old 07-12-10, 10:22 AM   #72
ronricorum
Pole Position
Trader Score: (0)
 
Join Date: Jun 2009
Location: WA
Posts: 398
Default

you are awesome! thanks! =D

now time to research where to buy a tt auto pumpkin!
__________________
Lowered2Perfection
H A W A I I

1993 SC300 Diamond White Pearl NA-T // 2009 IS250 Truffle Mica [ML no nav] Stock with some JP stuff
ronricorum is offline   Reply With Quote
Old 07-28-10, 07:13 PM   #73
boostgotme
Rookie
Trader Score: (2)
 
Join Date: Apr 2009
Location: fl
Posts: 77
Default

(auto sc300 pumpkin) so how do u swap the rear end and keep the stock auto tt gear ratio wanna have the auto tt gears...

would it be more cost effectly to just buy a whole working auto tt pumpkin
boostgotme is offline   Reply With Quote
Old 07-28-10, 09:12 PM   #74
spdrcr771
Lexus Test Driver
Trader Score: (12)
 
spdrcr771's Avatar
 
Join Date: Mar 2009
Location: Arlington TX
Posts: 1,536
Default

Quote:
Originally Posted by boostgotme View Post
(auto sc300 pumpkin) so how do u swap the rear end and keep the stock auto tt gear ratio wanna have the auto tt gears...

would it be more cost effectly to just buy a whole working auto tt pumpkin
yes that would be the most cost effective way, cause if you cant do the work yourself then you have to pay for the LSD intall. The problem is, the Supra auto TT diffs are getting kinda scarce. If you find one for sale there anywhere from 500-900 plus shipping. Kaaz lsd on eaby 800.
__________________

Mustang Dyno 8/14/11 98 SC430 (3uz PPE Ypipe)
rwhp=251 rwtq=253
Import Faceoff 2011 Ennis Tx 1/4mi
14.19 @ 98mph
Dallas Raceway 3/3/13 Crandall Tx 1/4mi
13.95 @ 97mph
PM questions about RSB
spdrcr771 is offline   Reply With Quote
Old 07-28-10, 09:18 PM   #75
spdrcr771
Lexus Test Driver
Trader Score: (12)
 
spdrcr771's Avatar
 
Join Date: Mar 2009
Location: Arlington TX
Posts: 1,536
Default

Quote:
Originally Posted by suprus View Post
I have a question... I am going to be using an r154 transmission from my stock w58 so will I be needing to use a different driveshaft if I swap the entire tt auto rear pumpkin???
No, you just have to change the coupler on the end of the diff to bolt to the driveshaft. Just use the one off your stock diff.
__________________

Mustang Dyno 8/14/11 98 SC430 (3uz PPE Ypipe)
rwhp=251 rwtq=253
Import Faceoff 2011 Ennis Tx 1/4mi
14.19 @ 98mph
Dallas Raceway 3/3/13 Crandall Tx 1/4mi
13.95 @ 97mph
PM questions about RSB
spdrcr771 is offline   Reply With Quote
Old 07-28-10, 09:18 PM
 
 
 
 
Reply

Tags
auto, automatic, change, differential, gearing, install, lexus, lsd, mkiv, ratio, sc300, sc400, stock, supra, tt

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
mk3 supra pumpkin into a SC poorsupra Performance & Maintenance 75 07-02-14 02:35 PM
OH Biggus Vertex Ridge Sc300 Part out Biggu SC400 / 300 Classifieds 44 11-17-13 05:43 AM
FL Supra TT auto LSD CCC-TT SC400 / 300 Classifieds 10 10-23-13 02:03 PM
TX FS: FueLab Fuel Pressure Regulator Kit (*NEW*) $110 shipped! dejacky General Classifieds 0 07-19-13 08:34 AM
CO 2007 IS350 X-Package 10k miles - Tungsten w/ white leather Redfire03 Lexus Vehicles Classifieds 38 10-21-12 08:08 PM

All times are GMT -7. The time now is 11:00 AM.

Join ClubLexus
Advertising


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


Get all contact info