1985 cj7 w/4 cyl. swap out

dano12771

New member
I just purchased a 1985 cj7 w/ a 4cyl. and Im looking to swap out this motor for either a straight 6 or a amc 304. I would like to know which motor will bolt right in w/ the existing equipt. I have Trans etc. It has a hyd. clutch and a 4 spd man. trans. Any help would be appreciated.
 

depends on the I4. Do you have the GM 151 was or the AMC 150 I4? The motor changed sometime in 1984 so it could be either.
 
One of the identifying traits of the GM 151 CID Iron Duke is that it has a flow through head, so the intake manifold will be on one side and the exhaust on the other side. IF it is an Iron Duke, a GM 4.3L v6 will bolt right up. There are only a couple GM bellhousing patterns.
 
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