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View Full Version : AX15 4.3 first gear


xtremeyj
09-18-2009, 07:10 AM
Found this on another site and thought it looked really helpful
seems to be easy swap, all you need 1st gear and countershaft from toyota r151 transmission (i dont know about U.S. models, mine is from LJ-70 cruiser)
just pulled both trannys to pieces, ill info later how this swap works.

toyota r151 gear ratio:

4.31 2.33 1.44 1.00 0.83 4.22

ax-15

3.83 2.33 1.44 1.00 0.79 4.22

toy 32 teeth on left , Jeep 31 teeth on right

http://s425.photobucket.com/albums/pp332/keyj/user631_pic15049_1230886525.jpg

http://s425.photobucket.com/albums/pp332/keyj/user631_pic15050_1230886525.jpg

Countershafts, lower is toy (11 vs. 12 teeth in first gear)

http://s425.photobucket.com/albums/pp332/keyj/user631_pic15051_1230886525.jpg

only difference is 5th gear locking, but same lenght in both axles. so that isnīt problem.
http://s425.photobucket.com/albums/pp332/keyj/user631_pic15052_1230886525.jpg

Tunabomber
09-18-2009, 07:41 PM
very interesting :confused0006:

xtremeyj
09-18-2009, 08:52 PM
86/87 turbo trucks and 4 runners Ive heard so far have that tranny in it.

Happypants
09-19-2009, 01:44 AM
Keep us updated

xtremeyj
09-19-2009, 08:30 AM
Apparently according to the guy that did this it worked well, brought crawl ratio from 64-1 down to 78-1. Im not doin this myself as I got a th400 goin behind my 350tbi. I was just puttin it out there for the rest of you jeep guys.