Topic: stock 3.0 auto tranny and t-case Q

[yota_krawler]

what can i do for crawling with an auto? It will be my wifes rig and I would like to put a geared t-case in it. any options?

[yota_krawler [OP]]

nothing?

[bigheadbenny]

there are only a few options, and none of them are very easy. i copied and pasted the t-case section from the auto tranny info and faq page on pirate.

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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:
"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."

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.
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