Swapping a 258 for a 91 4 cyl.
I have a 258 out of a 78 CJ5 with only 84K on it. I looking to buy a 91, 4cyl. with 199K. Can I put the 258 in without major reconstruction?
My advise, take it as you see it, is to keep the injected 4 cyl. My experience has been that they run just as well if not better than a carbed 4.2. They are geared for the motor so power is not a big issue. Another thing to consider is emission laws. The big thing about swaps is to go newer, not older. Just my 2 cents, Hamy.
One Way Up Racing
However, if you live in a state like mine, where anything 25 years and older is emission-exempt, go older and simpler with your swap, as long as your vehicle is 25 or more (see my '77 CJ-7, 25 years old this year, with the '72 360 in it, no emissions <img border="0" title="" alt="[Wink]" src="wink.gif" /> ).
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