4.7 to 5.7 engine swap

[Dalton Mayfield]

I got a 2004 1500 with a 4.7 in it and im wanting to swap the engine out for a 5.7 for more power I was wondering if the auto 4 speed trans would hook up to the 5.7 or if I would need to get the trans with the 5.7

 

[Johnny Paycheck]

If I was in your spot, I’d get an 8-speed with that Hemi. It would make much better use of the engine’s powerband than a 4-speed would.