I had one 7.3 - in a '99 F-350 SC dualie.. Pulling a mere 12K# camper it struggled and took a LONG time to get to speed.. (Pure stock).. Only way to get it moving would be chipping it - and I just didn't wanna mess with all that stuff.. But that's just me.. My current 6.7 PSD would out pull that 7.3 by miles..
