I have a 90 YJ that has a worn 258.I was wondering why you never hear of anyone putting a 304 or 360 amc engine in it.i would think you could even use the original 5 speed with the 304.I only do light off roading,it is a daily driver.
There are a few people on the bbs for run the 304, but a good number also who run the 360. Either way, you might not get the performance you want out of the ax-15 (which is what you have in yours right now).
If you don't mind a little more work, there are a lot of people here who have the SBC upgrades to 350's.
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