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Discussion Starter #242
Which differentials is Driveshaftshop using for their kits?
The DSS kit for the Supra is a 100% aftermarket, drag race oriented setup based on Ford 9in rear differential geometry. You can use any ring & pinion for a Ford 9in with that setup.
 

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They should fit into the differential just fine, but be sure that the axle stubs will bolt to the axles - sometime in the '97 production year, NA VVTi cars went to a smaller diameter stub and wimpy little tiny ass axles.

If needed, the stubs and axles from a 92-96 SC400 work wonderfully in a JZA80 running a small diff.



97-98 NA's are still throwing wild cards at times. I suspect there's a difference between the auto and 5-spd cars. So far I haven't seen the diff code itself steer anyone wrong.

I strongly suspect you have a 4.272:1 being an A05A. The last letter is a clear and very consistent identifier for LSD or no, and the 'A' always means it's an open differential.

Is your '97 a factory NA 5-spd or NA auto?
It's a factory NA 5-spd. What I'm torn between is putting a TRD LSD in my 4.27:1 diff or buying a 4.08:1 NA diff instead (and putting the TRD LSD in it).

This would be for the Grannas T56 swap.
 

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Discussion Starter #244
It's a factory NA 5-spd. What I'm torn between is putting a TRD LSD in my 4.27:1 diff or buying a 4.08:1 NA diff instead (and putting the TRD LSD in it).

This would be for the Grannas T56 swap.
Personally I would get a later model Lexus 3.769:1 open (06-10 SC430, etc, other 3UZ-FE models with the 6AT trans) and install the TRD LSD in that. The later Lexus diffs have beefier casings than the Supra or early SC differentials anyway.

Get the close ratio Tremec Magnum XL offered by Grannas and you'll have a pretty kick ass ratio spread, assuming a 305/35/18 or similar ~26.5in tire. You could go as short as a 25in tire (295/30/18) without incident or making the gearing too short.

Few people want the later 6AT 3.769:1 open diffs, so they're cheap as unholy fuck. I've seen them as cheap as $200-250 shipped out of low mile Lexuses.
 

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So I have an 1993 NA. I'm getting ready to do a 6 speed swap in the next few months and I bought a rear diff off of an SC430 to have a better matching final gear. I dropped my diff out and compared the two and the flanges are the same size and the donuts can both be swapped over too. I put the sc430 diff up and it bolts in perfectly to the driveshaft. From what I read the NA diffs are small flange and the SC430 diffs are big flange so I was ready to swap them. Does anyone know the measurement of the flange so I can see if I been ripped off or if I bought my car with a big flange diff?
 

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Discussion Starter #246
So I have an 1993 NA. I'm getting ready to do a 6 speed swap in the next few months and I bought a rear diff off of an SC430 to have a better matching final gear. I dropped my diff out and compared the two and the flanges are the same size and the donuts can both be swapped over too. I put the sc430 diff up and it bolts in perfectly to the driveshaft. From what I read the NA diffs are small flange and the SC430 diffs are big flange so I was ready to swap them. Does anyone know the measurement of the flange so I can see if I been ripped off or if I bought my car with a big flange diff?
Did you confirm the SC430 diff came from an SC430, and did you confirm the 3.266:1 ratio? If so, do you know exactly what year SC430 it came from?
 

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Well let me start off saying that when looking into the history of my car which is NA 5-speed, it originally started life as an NA Auto and through its life had been turbocharged and converted to W58 5 speed and back to NA all before I took ownership. I can't say for sure that the diff that came with my car is original or not but based on the way it drives the ratio is definitely an NA diff and the flange looks like the smaller flange.

I had the "new" diff shipped to my dealership from a salvage yard that had a 2003 SC430. I seen pics of the car and we've dealt with them and they always have been great and honest so I never thought I'd have to worry about something like getting the wrong parts. When I got it the assembly was very clean and seemed to reflect the vehicle having low miles like they said at about 68k. It wasn't until I had both on the floor next to each other and I'm getting ready to zip the nuts off to swap flanges did I notice they appeared to be the same size. So I got the measuring tape out and found the same measurements and even swapped "donuts" and they fit perfect. I compared my measurements to this pic I found of someone installing a SC430 diff and showing their measurements. Both my diff's come out to the RED line, not the BLUE one labeled "SC430".


Anyway yesterday I said screw it and just threw it all together and took it for a drive. I've noticed a big drop in RPM. I was doing about 70MPH at 3k RPM in 5th gear where with my old diff I was closer to 4k. This is with a W58. So yeah I dunno if some SC430 had different flanges or what I'm kinda stumped.
 

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Discussion Starter #248 (Edited)
Well the RPM drop is consistent with being a 3.26, what isn't consistent is the picture showing the TT Supra as being a small flange, which was never the case in any market. I'm also unaware of any Lexus or other Toyota models that use any flange pattern beyond the typical 'big' and 'small' flanges.

The difference in size is consistent between big and small flanges, I'll measure a spare companion flange from a small diff when I get back home, and hopefully be able to shed some light on WTF is going on with your setup.


Edit:

A quick look comparing the Lexus and Toyota EPC data shows the same part number 41204-30040 for the TT Auto Supra 'big flange' & the following Lexus models:

GS F
2016
8 Cyl 5.0L
2URGSE; URL10

GS200t
2016
4 Cyl 2.0L, 4 Cyl 2.5L, 6 Cyl 3.5L
2GRFKS, 2GRFSE, 2GRFXE, 4GRFSE, 8ARFTS; ARL10, GRL10, GRL11, GRL12, GRL15, GRL16, GWL10

GS300
1998-2006
6 Cyl 3.5L, 6 Cyl 4.0L, 8 Cyl 4.3L
1UZFE, 2GRFSE, 3UZFE; GRS191, UZS160, UZS161, UZS190

GS350
2013-2016, 2007-2011
4 Cyl 2.0L, 4 Cyl 2.5L, 6 Cyl 3.5L, 8 Cyl 4.3L, 8 Cyl 4.6L
1URFSE, 2GRFKS, 2GRFSE, 2GRFXE, 3UZFE, 4GRFSE, 8ARFTS; ARL10, GRL10, GRL11, GRL12, GRL15, GRL16, GRS191, GWL10, URS190, UZS190

GS400
1998-2000
6 Cyl 4.0L, 8 Cyl 4.3L
1UZFE, 3UZFE; UZS160, UZS161


GS430
2001-2007
6 Cyl 3.5L, 6 Cyl 4.0L, 8 Cyl 4.3L, 8 Cyl 4.6L
1URFSE, 1UZFE, 2GRFSE, 3UZFE; GRS191, URS190, UZS160, UZS161, UZS190

GS450h
2013-2016, 2007-2011
4 Cyl 2.0L, 4 Cyl 2.5L, 6 Cyl 3.5L
2GRFKS, 2GRFSE, 2GRFXE, 4GRFSE, 8ARFTS; ARL10, GRL10, GRL11, GRL12, GRL15, GRL16, GWL10, GWS191

GS460
2008-2011
6 Cyl 3.5L, 8 Cyl 4.3L, 8 Cyl 4.6L
1URFSE, 2GRFSE, 3UZFE; GRS191, URS190, UZS190

IS F
2008-2014
8 Cyl 5.0L
2URGSE; USE20

IS250
2006-2016
350C, LUX
4 Cyl 2.0L, 4 Cyl 2.5L, 6 Cyl 3.5L
2GRFSE, 4GRFSE, 8ARFTS; ASE30, GSE21, GSE26, GSE30, GSE31, GSE35, GSE36, GSE37
IS350

2006-2016
350C, LUX
4 Cyl 2.0L, 4 Cyl 2.5L, 6 Cyl 3.5L
2GRFSE, 4GRFSE, 8ARFTS; ASE30, GSE21, GSE26, GSE30, GSE31, GSE35, GSE36, GSE37

LS400
1997-2000
6 Cyl 4.0L
1UZFE; UCF20

LS430
2001-2006
8 Cyl 4.3L
3UZFE; UCF30


LS460
2007-2016
8 Cyl 4.6L
1URFSE; USF40, USF41, USF45, USF46

LS600hL
2008-2016
8 Cyl 5.0L
2URFSE; UVF46

RC F
2015-2016
8 Cyl 5.0L
2URGSE; USC10

RC350
2015-2016
4 Cyl 2.0L, 6 Cyl 3.5L
2GRFSE, 8ARFTS; ASC10, GSC10, GSC15, GSC16

SC300
1997-2000
6 Cyl 4.0L
1UZFE; UZZ30

SC400
1997-2000
6 Cyl 4.0L
1UZFE; UZZ30

SC430
2002-2010
8 Cyl 4.3L
3UZFE; UZZ40


Differentials I've known to be swapped into MK4 Chassis have been highlighted in bold.


Meanwhile, the NA-sized 'small flange' Part Number 41204-24020 shows the following Lexus cross-reference:

GS300
1993-2006
6 Cyl 3.0L, 6 Cyl 3.5L
2GRFSE, 2JZGE; GRS196, JZS147, JZS160

GS350
2007-2011
6 Cyl 3.5L
2GRFSE; GRS196

GS400
1998-2000
6 Cyl 3.0L
2JZGE; JZS160

GS430
2001-2007
6 Cyl 3.0L, 6 Cyl 3.5L
2GRFSE, 2JZGE; GRS196, JZS160

GS460
2008-2011
6 Cyl 3.5L
2GRFSE; GRS196

SC300
1992-2000
6 Cyl 3.0L, 6 Cyl 4.0L
1UZFE, 2JZGE; JZZ31, UZZ30

SC400
1992-2000
6 Cyl 3.0L, 6 Cyl 4.0L
1UZFE, 2JZGE; JZZ31, UZZ30

Yes, the model numbers and displacements and chassis codes are inconsistent but the 6 cyl NA = small flange is consistent even in this secondary market website reference to the EPC, which is the best I can do at the moment.

Once I get home, I'll measure a known small flange that came out of my own '95 Supra SE and we'll see WTF is going on, hopefully!
 

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Wreckless, or others.. I know this is a couple months old since last reply but will the entire pumpkin work for all those or is it just the guts we're talking about?

Curious specifically for 2004-2006 LS430 3.769 differentials, 07-11 GS350 3.769, 06-10 SC430, will the entire pumpkin work in my 1st gen GS300 subframe?
 

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Hi Jeff,

I'm wondering if the 8" truck 200 MM gear/pinion is the same as the mk4 200 mm or the mk3 200mm there are plenty of pre tacoma's that have low ratios like 3.5 / 3.4 I've found and I'm wondering if I can use these ring gears.

For instance

part number 41201-39795 3.5
or 3.4 41201-80072
 

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one question i ha a 200mm jdm with 49 crown teeth and 15 teeth pinion is this a 3.26 o 3.76?
 

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when you take 49 and divide it by 15 you get 3.2666666666666666667
 

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I've been digesting most of the info in this thread. A diff rebuild is needed for our Supra. Since it is 3.133:1 (B07D?), I'd like it to stay that way but see that TRD diff parts are discontinued and other brands don't seem to be for the "big diff" (220mm ring gear differential) and big flange setup that we have. What are folks doing in this situation? I supposed we could just go the OEM route but I'm worried about reliability.
 

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Discussion Starter #257
I've been digesting most of the info in this thread. A diff rebuild is needed for our Supra. Since it is 3.133:1 (B07D?), I'd like it to stay that way but see that TRD diff parts are discontinued and other brands don't seem to be for the "big diff" (220mm ring gear differential) and big flange setup that we have. What are folks doing in this situation? I supposed we could just go the OEM route but I'm worried about reliability.
The OS Giken Super Lock LSD is a wonderful upgrade and superior to all other available options. Bearings and other support parts are still available.
 

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Discussion Starter #258
Hi Jeff,

I'm wondering if the 8" truck 200 MM gear/pinion is the same as the mk4 200 mm or the mk3 200mm there are plenty of pre tacoma's that have low ratios like 3.5 / 3.4 I've found and I'm wondering if I can use these ring gears.

For instance

part number 41201-39795 3.5
or 3.4 41201-80072
I should have responded to this earlier.

I'm a MK3 guy and I have a lot of MK3 stuff too. The G-series 8in MK3 diff and related components can be swapped with some Toyota truck applications and a few others like certain year Chasers, Cressidas, Altezza/IS300's, etc. But they are not cross-compatible in any way with the JZA80/Aristo style 200mm differentials
 

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Not sure if this information is relevant, but if anyone needs it, I made measurements of my driveshaft that's being used with my V160 and GS400 rear diff.

V160 flange to carrier bearing: 20"
Carrier bearing to diff flange: 27"
Total length: 47"

Hopefully that's helpful to some of you.
 
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