Re: Transfer case swaps?
The 300, besides being a gear driven cast case, is a better canadate for a 4 to 1 conversion. The planatary gears of the 231 have given strength problems to the 4 to 1 swaps. If your thinking about doing it on your YJ, I just did it to my '93 with great success. I put the 300 and an NV4500 in and still ended up 2 inches shorter than the ax15 and 231 with a short shaft kit. Its a little noisey, a lot less refined, but brutally strong in a SWB jeep. I used an early (75) wagoneer 44 for the frt to get right hand drive along with ford and chevy parts to get 5 on 5.5. A scout II rear and I was ready to go. By the same token, if you don't need that excess, the 231 seems to do well with resonable size tires and a little care from the driver in the accelerator dept. Best of Luck!