Why do they call them a half ton, three quarter ton and a one ton pickups???
Yep. Old school. Really
old. In fact, it goes back to the Ford Model T days - about 80 years ago.
Back then the trucks really were rated as half-ton, three-quarter-ton, and one ton. And two ton and deuce-and-a-half. Because of the limits of available tires and wheels back then, for one reason.
And the names stuck. The Model A's and Bs were a little tougher. The new Fords during WW-II and into the 1950s were tougher still. Then the new Fords each few years just got more and more payload.
I still remember when Ford came out with the F-150. It had a heck of a lot more payload than an F-100, which was called a half ton even though it had more payload than 1,000 pounds. Dad called the F-150s 5/8ths ton for a while, but that didn't stick. So everyone continued to call them half tons. But it was just a name, no longer an indicator of payload.
But in those days almost all pickups had regular cabs and gasser engines.
But then Ford came out with the SuperDuty PSD, and my three-quarter-ton pickup has a net payload of almost exactly 1,500 pounds. 8,800 GVWR minus 7,300 pounds for my pickup with just me and a toolbox in it leaves a net payload of 1,500 pounds.
Of course, I used up a lot of payload for options, such as a heavy CrewCab body and a heavy diesel engine. At least I didn't spend 400 pounds on 4x4 drivetrain.
If I had a regular cab gasser F-250, I'd have a heck of a lot more net payload than 1,500 pounds.