I recently bought what I thought to be a T-18a (6.32:1) out of a CJ-7, to replace the early 1970's T-18 1B (4:1) that I have in my CJ-5..... but I do not know if what I purchased is exactly what I am looking for. The mount patterns are exactly the same, but the input shaft size is different.
The case that I bought has the Jeep style bellhousing pattern of the T-18 (with the offset mounting holes) whereas the Ford style is symetrical. However, I am not convinced that I have what I need and I am looking for some help.
Here are pictures of the T-18 1 B that I had previously installed in my Jeep. This came out of an early 70's CJ with a T-18 and does not have the granny low first gear. The bellhousing length is approximately 8" deep. This transmission has an input shaft length of approximately 9.43" from the mounting face, 1.125" main input shaft size, and .75" pilot bushing shaft size. This is a ten spline input.
The T-18a that I got has a shaft length of approximately 7.43" from the mounting face, 1.06" main input shaft size, and ~.68" pilot bushing shaft size. This is also a 10 spline input. The numbers on the side of this transmission read 13-01-065-906 with Borg Warner written underneath. I am also missing the front bearing retainer, and the one from the T-18 1B will not fit.
So did the T-18's in Jeep CJ's change shaft size and length? I really do not think that this is a Ford case, because it does not have the same Ford mounting dimensions. I can take more/better pictures if it would help figure this out. Any advice or help with this situation would be GREATLY appreciated. Thank you in advance.