242 to 231

i searched and found nothing but know there is info here somewhere... what does it take to swap a 231 from a 95 I6 auto to a 89 I6 auto that had a 242? is it bolt on? is the linkage or spline count different? is there a thead that i didnt find that would help? thanks in advanced

Spline count and length.

so the 242 is a 21 spline outout and the 231 is a 23? what length is different the output shaft or the case it self?

Check on that spline count. Late 1989 were 23-spline, I think the cutoff was August (but it's best to just visually verify.)

ok what about the length? do you know what length RCP is talking about?

What's he's referring to is "stickout length" - the length of the end of the input shaft from the mounting surface (at the transfer case) or the length of the output shaft from the mounting surface (on the transmission.)

I'm not sure if it wasn't just an issue with the BA-10 to AX-15 swap, or if it applied to the AW4 all around - but you might want to check at Novak Adapters or Advance Adapters for info - I'm sure one of them has covered it (I just haven't had time to go into it in any depth yet.) Both of them can be found through a brief Googling.

ok cool thanks. i think ill just look for another 242