Depends on the year, with the 6 speed you should have good performance, with the older 4 speed you will struggle with launching on steep hills. I used to have a driveway that was a 20% grade. My 2500HD with the 6.0 really had to grunt to start up my driveway loaded to 15K combined while my V10 E450 motorhome at 17K combined could go up barely touching the gas pedal. On a 6% freeway grade the Chevy had no problems maintaining 65 fully loaded (albeit over 5000 rpm in second gear) while the Ford struggled.