[hoser]

I believe these are the gear ratios of both transmission available for U.S. UZJ100's. I got the numbers online.

Not surprising, 1st gear of the 5-speed is lower and the top gear is higher. Reverse is lower as well. The 5-speed looks pretty sweet in terms of gearing.

A343F "4-sp Auto" (Effective Ratio=Gear X Diff gear)
- 1st Gear 2.804 (12.06)
- 2nd Gear 1.531 (6.58)
- 3rd Gear 1.000 (4.3)
- 4th Gear 0.753 (3.24)
- Reverse 2.393 (10.29)
Diff Ratio 4.3

A750F "5-sp Auto" (Effective Ratio)
- 1st Gear 3.520 (14.43)
- 2nd Gear 2.042 (8.372)
- 3rd Gear 1.40 (5.74)
- 4th Gear 1.00 (4.1)
- 5th Gear 0.716 (2.936)
- Reverse Gear 3.244 (13.3)
Diff Ratio 4.1

I have the A343F. What's interesting is if I install 4.88's, my effective 1st gear will be 13.68 versus the A750F/4.1 combination of 14.43

[e9999]

750 gears rule! I knew it!
and man, is that thing sweet to drive with! You 4 spd dudes will be amazed when you try it out!


and if somebody double checks these numbers, I'll put them in the FAQ!

[hoser]

Originally Posted by e9999

750 gears rule! I knew it!
and man, is that thing sweet to drive with! You 4 spd dudes will be amazed when you try it out!

Can I drive your wife's Cruiser?

[bjowett]

You should try the Touareg Aisin 6 speed automatic w/ 4.15 first gear, 2.66 t-case, and 4.56 gears. Lexus has a 6 speed auto in their cars, probably the same family.

[macneill]

Uhhh... man that is some complicated terminology, my brain hurts...

[calamaridog]

So how long is the A750F transmission compared to the A343F? Are they the same size? Is there any way to run the newer transmission instead of the older one? Would the old ECU work with the new transmission or is the transmission controlled separately?

Sorry, this is my first automatic I'm a manual sort of person.

[Greg B]

For you guys running the 5 speed transmission, you could re-gear to 4.30 diff gears. These are definitely available and would take your 1st gear effective ratio to 15.136 vs. 14.43. I don't know if the 5% increase is worth the price of re-gearing, but it is an option. Also, it should be pretty easy to source some used 4.30's at a pretty low price. If you were already going to install ARB's, it might not be that expensive to add 4.30's at the same time. Just a thought.

[Jim_Chow]

Originally Posted by Greg B

For you guys running the 5 speed transmission, you could re-gear to 4.30 diff gears. These are definitely available and would take your 1st gear effective ratio to 15.136 vs. 14.43. I don't know if the 5% increase is worth the price of re-gearing, but it is an option. Also, it should be pretty easy to source some used 4.30's at a pretty low price. If you were already going to install ARB's, it might not be that expensive to add 4.30's at the same time. Just a thought.

An alternative is to replace the entire front/rear diff w/ the 4.3's rather than sourcing the R&P's, especially if you can find a junk yard w/ a rolled '98-'02 100.

--Jim

[hoser]

Preferably the 4-pinion front (00-02)