Transfer Case Input Gear Swap

[flint54]

Getting ready to take the plunge. Planning to install

a (tag says 90) 242 in place of the (tag says 91) 231.

As expected, the 242 has a 21 spline input gear and

the 231 has a 23 spline. I've reviewed the previous

discussions here on this swap, and have confirmed

that the protrusion is the same. I'm seeking advice

from anyone here who has done this swap to help

me avoid screwing up two T cases. Thanks !! (Yes

I've got the 242 shift gate, and also the Novak cable).

[mvusse]

Between 90 and 91 the input shafts should be interchangeable. Around 94 they changed some stuff, including the cut of the gears. Make sure you have a large clean work table to organize parts in such a way that you know how to put it together again. I've had a few 231s apart and they are not overly complicated, but I imagine a 242 to be just a wee bit more complex.

[Garvin]

I did the same thing except the opposite way without issues. I swapped an early-'94 242 input shaft into my '90 231. The reason I did is because I blew up my '90 trans and swapped an early-'94 AW4 in since I couldn't beat the deal.