head swaping - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 02-15-2002, 02:24 PM
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head swaping

I got a 87 yj with a 258 engine , and wanted to do a 4.0 head swap. The 4.0 head I got is off a 90 cherokee . And I have read that to get the 40+ hp the head needed to be a 91 or newer. Is head wasting my time,or should I look for a 91 or newer head?

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post #2 of (permalink) Old 02-15-2002, 03:46 PM
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Re: head swaping

The head is wasting your time. While it is possible to use the head you have, the water jackets won't match. Get a '91 and newer head, you'll have less problems.

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post #3 of (permalink) Old 02-15-2002, 10:50 PM
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