(02-21-2013, 08:49 AM)kendawson link Wrote: Reviewing your primer at the location provided indicates the following:
F350 CC 6.0 diesel dually: and a full tank of fuel: 8360 lbs, and the GVWR is 14,000lbs. This leaves a payload of 5,640 lbs. A properly equipped EC 1160 wet is 5,565 and an EC 1165 wet is 5,767 lbs. With consideration for 500 lbs for incidentals, the 1160 is overweight by 425 lbs and the 1165 is overweight by 627 lbs. Both of these campers are too heavy for the F350. One would have to drop the diesel and drop the crew cab to meet weight ratings. 
You are correct, with one exception.
The F350 6.0 diesel came in the old 13,000 lb GVWR models built prior to 2013
If you own one of the older F350 models, it would be over weight by a whopping 1627 pounds!
So. . . we see how knowing the GVWR and camper weights is important.
I would venture that the "incidentals" weight will grow over time and a realistic number might be closer to 800 or 900 pounds.
Where does that leave us?
Unhappily, to be in strict accordance with the GVWR (NEW F350/GVWR:14,000lbs) it means no diesel engine or crew cab.
In my personal opinion, being 1-percent overweight isn't going to make a difference.
But being 10-percent over weight would be concerning and I'd never be able to drive in a fully confident manner.
And being over 10-percent may be downright dangerous.
That being said, there are truck camper owners with rigs at or over the 10-percent mark.
And I've never read of an axle failure with these rigs.
And I've also read that the factory tests run as much as 45 to 50-percent over the GVWR before axle failure occurs. These test are run on a flat track - not over railroad crossings, bridge crossings or potholes.
Carrying this post a little further. . .
Having been down this GVWR road before, I looked at upgrading to an F550
My current conclusion is that the different transmission in the F550 is geared too low for sustained interstate highway speeds.
The one TC owner that I personally know who has an F550 with an aftermarket gear kit installed has experienced several failures with the kit over a period of several years. The gear kit allows for greater highway speed.
At the moment, I've ruled the F550 out and believe that the newer truck models with a 14,000 GVWR will be the most suitable for many campers.
But I still have not made a personal decision on which camper would be my choice.