DWEINBERG01

I am looking to swap my A340H transmission for an A340F for the ability to get a gear driven case or duals. I am wondering what to do with the hydraulic lines that run back to the t-case. If I have been told correctly, the A340F does not have those lines to the case. Any help is appreciated.

tried4x2signN

http://www.4x4wire.com/toyota/tech/autocrawler/

yotaman85

thats a great link.

DWEINBERG01

Cool. Thanks for the link. I probably should have put this in the earlier post, but i'm gonna do a 3.4 motor swap at the same time, with ecu, harness etc. Will I need to still swap over all those parts in the link or will it just go together. I know I will have to do some work before going to duals but is all of the changes listed in the link required with the motor swap?

tried4x2signN

The 3.4 swap is a A340 issue, nothing to do with the TC...

Your H to f is a TC issue...


At least that's how that seems to me...

EDIT: ahhhh, the stupid H design makes the tranny and TC one unit. You can't separate the two. Why you do the H to F swap, is b/c you can separate that case from the tranny...

DWEINBERG01

Yeah, I basically want a whole new drive train. I have a line on motor,trans,t-case,ecu and wiring harness from an 03 taco. Motor wise, I know what to do (thanks to Yotatech). I am just wondering if I am gonna have to do anything transmission wise since I am swapping that also.

Basically, if I have the brain for that trans, what else needs to be done to get it to work?

tried4x2signN

Urine luck look what I just found looking for something else...

http://www.pirate4x4.com/forum/showthread.php?t=587521

Dual Transfer case options for the A340.

There is really only one option for getting a dual case setup behind the A340 tranmission to date.

Inchworm makes the only adapter available for the A340.

Taken from Inchworm's site:
[red]"It allows the use of Inchworm Double Transfer Case Adapters and Geared Cases behind factory automatic transmissions. Clockability allows stock rotation or up 10 degrees for added ground clearance. This adapter requires the use of a 23 spline input shaft.

This adapter does require a complete tear down of the factory automatic transfer case as well as some small part changing inside the transmission. Installation is available." [/red]

Link to their site
http://www.inchwormgear.com/store/pr...products_id=86

You will also need their 23 spline input shaft(which is a great upgrade anyway).
http://www.inchwormgear.com/store/pr...products_id=33

Then from there you can take your pick of using which gearing with the dual cases you would like.


Transfer Case options for the A340

While Toyota Tcase options are limited behind the A340, there is one more option that may appeal to you.

Jeep AW4s are basically the same at the A340, but with one major difference. They DO NOT have an integrated transfer case like the A340 does. The AW4 also has the removable bellhousing, so you can bolt a Toyota bellhousing to the AW4 for use in a Toyota chassis. So, that means that if you used the Jeep AW4 in a toyota, you have the option of going with other transfer cases. Two of which are the Dana 300, and the Atlas II transfer cases. Both of these cases offer a twin stick option to allow yourself the ability to disengage the front and rear axles for use on the trail. The Dana 300 offers a 2.62:1 gearing reduction in stock form, or the ability to get a 4:1 gearing option with either TeraLow gears from Teraflex or LowMax gears from Novak Adapters. The Atlas II offers the option of 3.0:1, 3.8:1, 4.3:1, or 5:1 sets.

The Dana 300 option would require a 5/8" spacer that you can buy from Novak Adapters. This adapter also allows you to clock the Dana 300 almost flat for more ground clearance. It also gives you the option of not needing to pull the rear driveshaft when flat towing, because the output bearing would now be riding in the gear oil in the Tcase.
Link to adapter with Novak:
http://www.novak-adapt.com/catalog/kit_153_aw4.htm

AFAIK, there is no adapter required when using the Atlas transfer case with the Jeep AW4.

DWEINBERG01

Right on. Thanks for the info. Hopefully it will all come together soon.

thefallman

inchworm isnt the only one Marlin makes one as well. Please people do a bit of research before posting questions like this. Most of the answers this guy is looking for can be found in MT Goats Build thread

https://www.yotatech.com/forums/f160...started-82145/

actually looks like everything can be found there please people again SEARCH function is your friend.