How hard would it be to put a new 5.7l hemi in my 97 2500 with a 5.9l in it?

 

hard, just leave it at that lol

 

Hardest part would be getting the whole wiring harness, or the most expensive part ha

 

and tranny and making all the senors work

 

For what it will cost, cheaper to mod a 5.9 for the same power with a lot less hassel.
My 5.9 with , 52mm tb, m1, rt+10 cam, 1.7rr and all the bolt ons made the same hp as a hemi(270rwhp) but much faster cause our trucks are lighter and have much lower drag coeff.

 

well if you have the WHOLE wiring harness, which would be a bitch to get, and the PCM the sensors should work alright. Key word should .