2003 Dodge 2500 5.7 Hemi

[NMMEss]

I have an 03 2500 with a 5.7 hemi engine and was wondering what i would have to do to swap out the engine with a 7.3L Hemi Stroker and if it is posible. Thanks

 

[HemiLonestar]

Possible? Yes. Advisable, no, as 03 has the worst ability to custom tune to get that engine to run properly.

 

[NMMEss]

So i suppose it would take replacing the entire ECU/ECM to make it work

 

[chefred112]

is that 7.3 an older hemi? (440) or is it a stroked up new gen hemi?