Brbrooks83 Posted February 24, 2014 Share Posted February 24, 2014 What year 4.0 will work in our trucks I got a 89 and would like to know what my year ranges are. Thanks Brandon Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted February 24, 2014 Share Posted February 24, 2014 87-90 ( direct bolt on ) 91-99 head, intake and flexplate are different 00-01 not a 100 % sure on those Link to comment Share on other sites More sharing options...
Brbrooks83 Posted February 24, 2014 Author Share Posted February 24, 2014 What would I have to do to get a 97 model Motor to work in my 89 comanche Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted February 24, 2014 Share Posted February 24, 2014 Use your old head , change the flexplate over , and if I were you I would buy a new temp sensor and put it in the 97 thermostat housing Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted February 24, 2014 Share Posted February 24, 2014 And all your 89 external parts should be bolted on your 97 block Link to comment Share on other sites More sharing options...
Brbrooks83 Posted February 24, 2014 Author Share Posted February 24, 2014 Ok guys thanks for the info I am going to look at this motor on Saturday it's in a Cherokee with no tranny so I can't drive it but I can hear it run. Anything that I should look for or any advise on buying a used motor? Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted February 24, 2014 Share Posted February 24, 2014 Check for lifter noise , oil pressure , clean oil , chech for sludge and antifreeze. What's the mileage ? How is the rest of the jeep maintained ? It kinda gives an idea as to how long you should get out of the motor in my opinion Link to comment Share on other sites More sharing options...
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