All rear end ratios

**Kirk** · 06-01-2010, 03:33 PM

All USDM 93.5-96 2JZ-GE Supras had a 4.272:1, the 97 and 98 models both got the 4.083:1 ratio. This is both for the 5-spd and automatic cars. LSD was optional but rare.
All JDM 2JZ-GE Supras with the 5-spd got the 4.083:1 regardless of year, I am not sure about the automatics but I suspect it's the same. LSD was optional but rare.
The only 2JZ-GE cars to get the 3.766:1 ratio were the JDM SZ-R's that came with the V161 6-spd. The Torsen LSD was optional on the SZ-R

All USDM/Export TT 6-spd's got the 3.133:1 ratio in the 'big' diff with the 220mm ring gear.
JDM 6-spd cars made before May of '96 got the 3.266:1 ratio in the same 220mm 'big' diff.
JDM 6-spd cars made after 5/96 got the 3.266:1 ratio in the smaller 200mm diff pattern shared by the NA's and TT autos, but with the similar larger cooling fins and such found on the other 6-spd diffs. All TT 6-spds had a Torsen LSD from the factory.

TT autos all got the 3.766:1 diff in the 200mm 'small' diff pattern, usually with a Torsen LSD but not always. Some USDM 97-98 TT autos didn't have an LSD, and some JDM Supra GZ's didn't come with an LSD.

The 220mm 'big' diff found on the US spec 6-spds, etc, is definitely stronger than the 200mm 'small' diff. However, the 200mm diff is strong enough to survive big power and plenty of 600-800hp cars have the 'small' diff.
But if harsh launches at the drag strip under big power is in your cars future, and/or 900-1000+whp the larger 220mm diff would be a good idea.

Note that later NA's starting sometime either in late 96 or early 97 all came with much weaker axles, and these NA axles will fail very easily if used with a 2JZ-GTE. The early pre-96/97 NA's had the same bigger axles found on the TT Auto and are quite strong for an OEM part.