Transfer cases

[Tony Smith]

Originally Posted by David_Hayward

I am right in saying that a Chev case will go in a Ford but not the other way round?

Well, strictly speaking, no it's the other way around. The Chev 2-speed transfer cases use a chassis crossmember to mount the gear selector and shift rods, whereas the Ford 2-speed design has the gear selector and shift rods mounted directly onto the case body. If you remove the selector from the side of the Ford case and use the chassis mounted selector, then a Ford case will mount into a Chev. If you mount a Chev case into a ford, although it will physically mount and the driveshafts will all line up, there will be no way to mount the gear selector.

The C8A/C8AX/F8A/C15A/F15A cases are single speed, and AFAIK they are the same dimensionally and internally, and being a single speed do not have the selector bracket issue mentioned above. That said, the case dimensions, driveshaft positions and many internal components are shared with the 2-speed cases. The basic difference is that the single speed cases lack the gear reduction components for low range, most of the other components being equal.