4.0 Cylinder Block Interchangeability

Rickyd said:
Read the first post
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I did read the first post and spent some time looking for an answer hence my question. I've not seen a clear answer to my question anywhere: will the newer model computer in my 99 be OK with a 98 block. I'm assuming it will but looking for helpful input please if this assumption is correct.
 
Bammo68 said:
I did read the first post and spent some time looking for an answer hence my question. I've not seen a clear answer to my question anywhere: will the newer model computer in my 99 be OK with a 98 block. I'm assuming it will but looking for helpful input please if this assumption is correct.
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The answer on block interchange is in the first post. If you are talking about cylinder heads and engine management that is something else. Depending on if you have a distributor or not there are other problems
 
Dluck36 said:
Can you tell me I have a 98 zj 4.0 runs drives fine just want to swap everything into my 98 tj wrangler with 2.5 is this possible thanks in advance
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Just wanted to know if a transmission from behind a 318 will bolt up and work on my 4.o 6 cylinder
 
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