Where can i find the ratio of an isuzu tranny (92 sunbird )?

And if different ratio exist between years?

I need to change the ratio of the 3rd gear for oval racing!

Thanks for your help!

I can't beleive nobody have the specs for the ratio...

From v6Z24.com sorry in advance if this is a no-no

Transmission Gear Ratios
2nd Generation Transaxles

HM-282 (Muncie/Getrag) (RPO: MG2) and NVT 550 (New Venture) 5 speed
1st - 3.50 (driven gear 49 teeth, drive gear 14) 33mph @ 6000 rpm
2nd - 2.05 (driven gear 41 teeth, drive gear 20) 56 mph @ 6000 rpm
3rd - 1.38 (driven gear 33 teeth, drive gear 24) 84 mph @ 6000 rpm
4th - 0.94 (driven gear 35, teeth drive gear 33) 115 mph @ 5650 rpm
5th - 0.72 (driven gear 31 drive gear 43) 119 mph @ 4450 rpm
Final Drive Ratio - 3.61:1

TH125C (3T40) - 3 Speed Automatic (RPO: MD9)
1st - 2.84
2nd - 1.6
3rd - 1.0
Reverse - 2.067
Final Drive Ratio - 3.18

Isuzu 5 Speed Manual (RPO: MK7)
1st - 3.91
2nd - 2.18
3rd - 1.45
4th - 1.03
5th - 0.74

Isuzu 4 Speed Manual (RPO: M73)
1st - 4.01
2nd - 2.25
3rd - 1.40
4th - 1.00
3rd Generation Transaxles

Getrag F23 (M86/M94) Years: 2000+
1st - 3.58
2nd - 2.02
3rd - 1.35
4th - 0.98
5th - 0.69
Reverse - 3.31
Final Drive Ratio - 3.94

4T40-E 4 Speed Automatic years 95+
1st - 2.96
2nd - 1.63
3rd - 1.00
4th - .68
Final Drive Ratio - 3.91
Related Transaxles

TH440 (4T60) 4 Speed Automatic * (RPO: ME8)
1st - 2.921
2nd - 1.568
3rd - 1.0
4th - .705
Reverse - 2.385
Final Drive Ratio - 3.33
*Note: The TH440 tranny was NEVER used in the J-bodies. It can be found in the Lumina and other GM cars. This tranny could possibly be swapped into the J-bodies.


I looked but couldn't find the old post. I think the geo storms have a 4.10 FD and are swappable also the isuzu impulse. They have better internals if I remember correctly and different gearing. Also try the racing forum for future circle track as most people rarely check 2nd gen anymore. There are a few of us circle trackers on j-body