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Technical Advice and Questions / Re: Which 4.0's will bolt into my 1996 ZJ?
« on: July 12, 2009, 10:56:55 pm »yeah it was just too easy. arent the 4.0s alot narrower than a normal cj motor?
The straight six found in the CJ's is a 258 ci (4.2L) [Late 70's and 80's CJ's, older one's could have 232 ci, buick 225 v6, or 4cyl]. The 4.0L (242 ci) is the same block with shorter stroke on the crank. The hardest part of switching from a 258 to a 4.0L would be transfering the computer.