'Big Diff' refers to B0xx-series 220mm ring gear size differential
'Small Diff' refers to A0xx-series 200mm ring gear differential
'Big flange/Small flange' refers to the 3- bolt input flange (aka companion flange) that bolts to the driveshaft. This flange can be changed out on both 200mm and 220mm differentials
Picture: left B-series 220mm "big diff" right A-series 200mm "small diff"
US Spec:
| YEAR | CODE | GEAR | LSD/OPEN |
| 1993-1996 | A05A | 4.272 | OPEN |
| 1993-1996 | A05B | 4.272 | LSD |
| 1997-1998 | A02A | 3.769 | OPEN |
| 1993-1996 | A02D | 3.769 | LSD |
| 1993-1998 | B07D | 3.133 | LSD |
| 1997-1998 | A01A | 4.083 | OPEN |
| 1997-1998 | A01B | 4.083 | LSD |
JDM:
| MODEL | CODE | GEAR | LSD/OPEN |
| SZ (auto/5spd) | A01A | 4.083 | OPEN |
| SZ (auto/5spd) | A01B | 4.083 | LSD |
| SZ-R 6speed | A02A | 3.769 | OPEN |
| SZ-R 6speed | A02B | 3.769 | LSD |
| RZ Auto / GZ
|
A02A | 3.769 | OPEN |
| RZ Auto / GZ
|
A02B | 3.769 | LSD |
| RZ 6speed (93.5-96 V160) | B03B | 3.266 | LSD |
| RZ / RZ-S 6speed (96.5-02 V161) | A03B | 3.266 | LSD |
EURO / GCC (arab) / GEN (general):
| YEAR | CODE | GEAR | LSD/OPEN |
| 1993-1996 Auto EU Spec | B04D | 3.538 | LSD |
| 1993-1996 Austria/Switz Spec | B03D | 3.266 | LSD |
| 1993-1996 EU 6speed | B03D | 3.266 | LSD |
| 1993-1996 GCC NA 5spd | B04A | 3.538 | OPEN |
|
|
B04B | 3.538 | LSD |
| 1993-1996 GCC NA Auto | N/A | 3.769 | N/A |
| 1993-1996 GEN Na 5spd | N/A | 4.083 | N/A |
US spec vehicles:
92-00 Lexus SC300 auto---- 4.272:1, open, small diff, small flange
92-97 Lexus SC300 5spd---- 4.083:1, open, small diff, small flange
92-96 Lexus SC400 (auto)---- 3.916:1, open* small diff, small flange
1997 Lexus SC400 (auto) after MC but before going to 5AT trans - 3.916:1, open, small diff, BIG flange.
98-00 Lexus SC400 (5AT trans, VVTi)---- 3.266:1, open, small diff, big flange
93-95 Lexus GS300 (auto)---- 4.083:1, open, small diff, small flange
96-97 Lexus GS300 (auto)---- 4.272:1, open, small diff, small flange
98-00 Lexus GS300 (auto)---- 3.916:1, open, small diff, small flange (US Market)
98-00 Lexus GS300 (auto)---- 3.615:1, open, small diff, small flange (UK/Europe Market)**
98-00 Lexus GS400 (5AT auto)---- 3.266:1, open, small diff, big flange
02-05 Lexus SC430 (auto)---- 3.266:1, open, small diff, big flange***
06-10 Lexus SC430 (auto)---- 3.769:1, open, small diff, big flange***
I need verification on more of the 00-up Lexus models, anyone with a source of this info PLEASE let me know!
JDM vehicles:
91-97 Aristo 3.0V (2JZ-GTE model, auto)---- 3.769:1, LSD optional, small diff, big flange
91-00 Soarer 2.5GT-T (Auto and 5spd?)----- 4.083:1, LSD optional, small diff, small flange
91-97 Soarer 4.0GT (auto) ----- 3.916:1, LSD optional but rare, small diff, big flange
-------
Source: http://www.supraforums.com/forum/showthread.php?608545-JZA80-Differential-Info!
