ib516 wrote:
My 2014 hemi 2500 laramie weighs a hair under 7000# (3000# payload); my coworkers 2014 hemi 1500 Laramie with the exact same options (4x4, leather, crew cab, 6'4" box, sunroof, no air suspension on either one, etc) weighs 5700# (1100# payload)..
My previous 2010 F150 5.4L Crew 4WD weighed 5770 lbs (7200# GVWR, 1430# payload), my 2012 F150 5.0L Crew 4WD weighs 5768 lbs (7350# GVWR, 1582# payload), the 2014 F250 6.2L Crew 4WD 6.5' bed truck weighed 7167 lbs (10,000# GVWR, 2833# payload).
Looks as though the Ram should fair better mileage wise being especially if you can stick to a standard model other than the luxury Laramie edition. That 1100# payload is what I was seeing on floor models as well, up to about 1200#s. Not enough for my modest trailer and family, so a Ram 2500 would be needed.
After seeing this Ram link, don't go with a 5.7L, you only get a 9,000# GVWR. The 6.4L has a 10,000# GVWR as does the Diesel.