Based on the year of your truck as listed, you should have a 6.7 liter diesel ... check your signature.
I'm not an expert so, when it comes to trucks and what they can tow I rely on what I read AND my own experience.
READ: I read that the only difference between F250 and F350 is one overload spring. I added air bag levelers on mine to help balance the level.
EXPERIENCE: I pulled a 35' 5th wheel over 60,000 miles in the four years we owned it with an F250 Super Duty, short bed. Never had any white knuckle experiences though we crossed the Rockies back and forth in
every state except NM and in all kinds of weather. Montana is filled with 5er's. Most of them are pulled by 3/4 ton and 1 ton trucks. Most do not opt for the duallies. If yours is set up with the tow package and the
tow/haul feature, it ought to handle a full time 5er.
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