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Fm145 to M50D Swap


belovedb2

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I am doing a trans swap frome fm145 to M50D. I found a great write-up on it from one of our members. I have it planned out but I have only one important question: The M50D trans is about 3 inches longer than the fm145 which means that the transfer case will need move back 3 inches. Of course, this also means that the rear drive shaft will need to be 3 inches shorter and the front shaft will need to be 3 inches longer. My question is "how is this accomplished?" Replacement shafts? Modified existing shafts?
 


mjonesjr

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You can get the front and rear drive shafts out of a newer Bronco II that had either the FM-146 or A4LD transmission and they will be a bolt in swap.
 

belovedb2

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Do you know what year would be compatible. My B2 is an 86.
 
mjonesjr

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Any Bronco II with those transmissions.

Make sure to look at even the 2wd Bronco II's for the rear drive shaft as majority of the Bronco II 2wd's had a dummy transfer case.
 
adsm08

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Yup. Any A4LD, or any 89 and up should have the shafts that you need.

Allegedly an 04-09 F-150 front shaft will work for the rear one too, but I don't have any proof of that.
 

belovedb2

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Any compatibility coming from an auto trans? Might be easier to find.
 
mjonesjr

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Nope.
 
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