4020 engine swap

Is the engine from the 6600 a 329 of 404? If it"s a 329 don"t even try. And what is wrong with the engine that is already in the 4020?
 
Guy from Indiana sells all the parts to do it. Calls himself "JUST JOHNS". Few tractor in my area that have had this type of swap. The 329 engine is better on fuel and starts better when cold. If you put the turbo engine from 7700 in they call that a poor mans 4320. Not sure all the work is worth it.404 parts are easy to find
 
I can tell you all you need to know to put a 6600 404 non turbo engine in your 4020,,easy and efficient swap..
 
Hire a good mechanic to atleast figure out where the anit-freeze is going. An engine rebuild is much better than throwing an unknown engine in your tractor. Again I would NEVER put a 329 in a 4020. A combine 404 is not that bad to put in if your engine is not rebuildable. The 329 has a history of block erosion (cavatation) and then puts the anti-freeze in the pan.
 
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