I am finishing mapping out my transmission swap from an M5-OD to a ZF. I don't remember which T-case I have, the 13-45 or 13-56. I was wondering if these are interchangeable? Do these two have the same bolt pattern and input shaft? Hopefully these two tranny's used the same T-case. Is this true?

Also, as a side note, what are the gear ratio's of the ZF?

Rob
89 F150 4x4
300 I-6

 

OK, 1345 vs. 1356, here we go: Looking at my '91 Ford/Helm shop manual, here the really helpful difference I've spotted: the 1345 has an aluminum case, the 1356, magnesium.
I guess a magnet is out of the question, use a Zippo and see which case burns!
Seriously, the '56 has the 4wd indicator switch one the front drive side; the '45, on the rear.
I'm willing to bet they all directly interchange.
Eddie

 

Yep, the 1356 (both electric and manual) and 1345 are directly interchangable. Ford used the 1345 in a shortage of 1356's(I think)