I've been comparing the 2 and understand that:
3500C&C has a different:
Auto (aisin)
frame (straight frame)
engine power output.

I am trying to compare the 3500DRW vs the 3500 C&C on the Dodge site..

Dodge reads a:
13.9" rotor size for 3500DRW
13.87" rotor size for 3500 C&C
23,000lbs GCWR for 3500 C&C
24k lbs GCWR for 3500DRW

It looks like you get more fuel capacity with the 3500C&C.
Otherwise, what reason would there be to get a 3500C&C over a 3500 SRW?

Different-easier frame to attach different boxes to, with a stronger frame?

Please enlighten me.

 

I think the rearend is different too. The C&C is bigger, I want to say 12.5" or something like that. I know that the C&C has more spring on the back then 3500. Fuel cell is 52 gal. and 3500 is like 35 gal.

 

The rear axle is a different width.

 

Oh, I thought they were saying that the diff. was larger, as in a 12.5" ring rear. As opposed to a 11.5 for the 3500's

 

The C&C has a different emission system making it very easy to remove it without problems,the C&C has a different cam,your options are limited for performance mods right now because most programmers will not work with the truck. The Aisin has a better warranty with a low,low first and reverse gear.