Assume we're talking typical US-made 4WD trucks.
Are transfer cases typically an "add-on" to the transmission whose removal would allow the transmission to be used as a conventional rwd box, or is the transmission "dedicated" to the use of a transfer case and inherently inappropriate for use in rwd applications?
Typical is a different tailshaft and housing that the transfer case mounts to. Requires much disassembly and modification to convert to 2wd parts.
Somewhat rare are divorced T/C, with a 2wd transmission connecting to a stand alone T/C with a driveshaft.
All the makes I've seen take the tail shaft off, bolt on an adapter for the tcase and bolt the tcase to the adapter. But the output shaft is usually different spline/length.
Suzuki Samurais and Kaiser M715s are two of the only instances of "divorced" transfer cases I can think of quickly. I'm sure a few more exist, but often the whole rear end of the transmission is different.
In reply to buzzboy :
Fords up to the mid/late 70s had divorced cases. Np205's, offhand. Some were married...LOTS were divorced cases. Those are still a great transfer case. Heavy, but an excellent box.
Dodge up thru the same time frame also had divorced cases. 201s and 205s. Then later went to married 205s. Can't recall offhand how / when / where the switch was made other than late 70s into early 80s.
Most GM stuff had married cases in that era and still do.
Lots of IH trucks, etc. Etc. All had divorced cases. It wasn't up until the late 70s/early 80s that outside of GM married cases became the norm. Prior to that, they were the exception to the rule.
I didn't know for sure before reading the earlier posts, but it looks like once again it's the universal automotive answer:
"It depends. But probably means the part you want to use won't work the way you want to use it."
Usually all you have to change is the tail housing and the main shaft.
Changing the main shaft involves a complete disassembly, so it usually makes more sense to just sell what you got and get the flavor transmission you want.
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