I have a 2002 ram 1500 with the 4.7L and i just bought a engine and tranny out of a 2010 ram 1500 5.7L hemi with wiring harness and tranny all together i did not get the ecm or pcmwith the buy i kno that i will need to buy the computers but what do you guys think about the swap or have any of you done anything like this what elese will i need the plugs and conectors look diffrent. Will the 5.7 ecm plug into my exsiting harness on my truck now will i need any diffent fuel presures, lines, etc. and what about throttle body i kno that the 5.7 has the eletric throttle or that is what i have read on here so far just any general direction or info you guys can help with would be great i own a automotive shop and im a diesel tech for caterpillar so im pretty well good on the mechanic part just anything that you guys know that could help or point me in the right direction on where to start would be great

 

You kinda overshot the mark with the setup you got. Had you gotten everything complete from an 03-05 hemi ram you'd be ahead of the game. But you grabbed a 4th engine setup, CAN bus computers mating up with your PCI bus truck, the '10 engine has VVT and active intake manifold, you will have to find a way to get that PCM to integrate, gonna be alot of harness hacking. All hemis come with fly by wire, if you intend to use that engine as is you will HAVE to convert the pedal. It's going to be much more difficult than an 03-05 setup. Plenty of those swaps already running around.