Well, I am almost finished with my swap. Had a shell of an 88 YJ a previous owner had prepared for paint and a V8 swap, but decided to use a 98 XJ powertrain instead (4.0/AT/231)
What is left to do is the transmission mount, exhaust, drivelines, and interior electrical gages.
I was able to fabricate my own engine mounts (it had none) and have successfully swapped the transfer case linkage and AT shift assembly into the YJ. In terms of OBDII compliance, I swapped the complete engine harness from the 98 XJ into the 88 YJ, and the only problem is getting the code reader to work. Engine starts and runs fine, but when and if I have problems, it would be nice to get the codes. I may be looking to replace the entire harness with an aftermarket eventually if I have any problems.
My question today is angle of the transmission with the frame. Should the transmission (automatic) be level with the frame, or can it angle a bit do the rear diff? I am going to build a mount to attach to the transfer case shield and would prefer to get this right the first time!
Also, does anyone have the measurement (length) for a stock rear drive line? The YJ didn't come with one, and a stock one may work for now until I get a SYE and CV shaft installed. The AT tail shaft from the XJ is likely longer? than what would be on a YJ with an AT.
Thanks in advance for your help.