Saying Bye to the 5.7 and installing the 7.4L! 1997 C3500 Dually Project! 

I’m looking at c2500s and c3500s right now. I’d prefer the 7.4L (I owned a 2002 8.1L before) but there are a few 5.7L 2500s & 3500s in good condition. Are the 5.7Ls really underpowered in the larger chassis?? It’d only be a daily driver and I work from home so not super worried.

Question bro in the same process of doing the same swap but i am currently stuck. Did you use the same wiring harness for the 5.7 to the 7.4 or did you swap the wiring harness as well ?

What type of gas you put in this

Are you going to sell the 5.7?

How do I know if I have super HD of regular

I’m doing the opposite as funny as that must sound Motor went out and I have a donor 5.7

It's gas