Will a 5.9 work in a dodge truck that originally came with a 5.2 from the factory without?
I mean, I know it can work but what will be needed to have it work properly? will I need a new ecm or will the 5.2 work?

Thanks for any help!

 

I have done the swap.

Do a search this gets covered often. You can even search using my name as a criteria. I have explained what is needed a couple times.