Edd505 wrote:
36ft 13,000 SRW F350 with the 6.7 diesel. The gas F350 shouldn't be a problem, your more interested in how much weight it can carry, what it can pull is useless.

Well with a gas engine, it is less about what the truck can carry, than what it can pull.
Towing ratings are derived by pulling a flatbed trailer loaded to a determined weight. Most of the time because the gas engine is lighter and has less pulling capacity than their diesel counterpart. In addition there is the limitation of frontal area for gas engines. Most towing guides have limitations on frontal area for gas engines. I didn’t see any in the owners manual for our 2001 Ram CTD, or for the 2016.