A trucks GVW is not exclusive to the amount of weight it's bed is designed to carry. A portion of that potential GVW is represented by its tongue weight capacity, for example. When referring to a truck as a 3/4 or 1 ton one is specifically calling out it's bed capacity. A F-350 is not a 1 ton. Depending on set-up (dually, for example) it might be able to handle up to say 7,500 lbs in the bed. Most stock, basic type F-150s are 3/4 ton. Stock, basic F-250s step up to just over a ton. I think the terms 3/4 and 1 ton are just generic carry overs from long ago that are still common in today's vernacular.I had an F350 way back in 76 and the gross vehicle weight was 10,000 lbs. The truck weighed in around 2.5 tons, so it would haul 2.5 tons. I don't know why they call them 1 ton trucks, since thats only 2000 lbs. Does anybody know?