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04 F250, 4x4, 6.0L, Crew Cab, short bed
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With normal options, full tank of diesel, no driver or passengers, and with absolutely no mods such as bedliner or trailer hitch or toolbox or anything stored behind the back seat that Ford didn't put there:
7,150 to 7,200 pounds.
Add normal mods, toolbox full of tools and jack(s)s and extra fluids, cooler full of cool, driver and Sweetheart and maybe a big dog or kid in the back seat, and you're quickly over 8,000 pounds.