HZJ79L transfer-case used with R151F?

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Jun 5, 2013
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Hello Gents,

Trying to identify the transfer-case used on the 2010-now HZJ79 with the R151F transmission, as I would like to have a dual t-case setup for a mining truck project.

I found a spec sheet that lists a BF1B t-case, but I am not familiar with that model and have been unable to find any further details on it.

Attached is a photo and following is what I know thus far on transmission and t-case;

- transfer-case input shaft is 23 spline
- 1st = 4.313, 2nd = 2.330, 3rd = 1.436, 4th 1.000, 5th = 0.838, R = 4.220, t-case high = 1.000, t-case low = 2.295

Any details on t-case model, mating pattern, and input shaft details for making mod kit would be greatly appreciated.

Cheers,
Paul

HZJ79GBOXTFRASSY.webp
 
A few more images of the mating surface

From the images below, does this look similar to other transfer-cases that any of you have run across? For reference, the distance between the dowel pins is approximately 6 inches.

Cheers,
Paul

Toyota BF1B transfer-case.webp


Toyota BF1B transfer-case mating pattern.webp
 
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