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So I have a guy asking me if I can swap a 2011 lml engine into his 2005 truck that had an lly in it. The crank broke on the lly and he got the lml engine for very cheap.

I'm not to keen on any details right now as I haven't looked into it much yet. I would like to know if this is even possible first.

So assuming he wants to use the 5 speed trans from the 05 with the lml engine what would all be needed. Would it be possible to use the lly heads on the lml short block? Quite sure he has the ecm from the lml ready to go not sure about pcm/bcm though. How hard would it be to make a stand alone harness to run the complete lml engine? Any info on this swap and whether or not its worth it would be appreciated.
 

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If I were going to do this, I would swap the ENTIRE POWERTRAIN (engine, transmission ECM, TCM, etc from the newer donor including the BCM. I think there will be lots of problems encountered no matter what you do.
 
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