What is the damn difference?

Depends on the year, but in general, not much. I have an '05 350 Powerstroke, my son has an '05 250 V10.

As best as I can tell the 350 has heavier springs and that's it. It's rated at 11,400 lbs GVW. The son's 250 is 9 thousand and something GVW. His rides much smoother, but the 350 isn't a bad rider either.

I think (other than engines) everything else (brakes, etc.) is the same, but I am not sure. The 350 stands about 2-3 inches higher than his ... although my 20 inch wheels might have something to do with that. (Harley Edition)

RCE

100

If you are talking a F250 vs a F350 SRW, very little. Same frame, axles, brakes and tires too (if F250 has 265's) and just a little more spring in the rear and a different door label and a higher price tag too. If you take the time to modify rear spring (if need be) and have the proper tires under it too, a F250 SD will carry just as much weight as a F350 SRW and just as safely too. BTW, the rear axle assembly itself in that truck is rated at 8k capacity be it a F250 or F350, only springs and tires are the limitation as frames are the same even on a F350 DRW.

100.

Key point. Nor does it change towing capacity or GCVWR.

I originally looked at F-250s to tow a fifth-wheel camper. Because the fifth-wheel's max legal GVW was 15,400 lbs, I had to get the F-350 to be legal on the road. The F-250 was rated at around 12,500 lbs capacity (fifth-wheel) and the F-350 was at 15,500. (Both being SRW, not duelies)

RCE

Springs.

This is how it used to be....

An F-250 is a 3/4 ton.

An F-350 is a 1 ton.

Functionally, for most people's use, they are basically the same.

The 1/2, 3/4 and 1 ton references don't reflect capacity anymore though. My F-350's (crew cab, 4x4) max GVW is 11,400 lbs. Curb weight (with fuel, etc.) is around 7,200 lbs. So, rated capacity is the difference, or about

4200 lbs. Actually, I think I remember it being less, like 4100 lbs, so maybe the curb weight is higher. But still, that's over 2 tons for a rated load capacity, including passengers, junk and whatever you are hauling. I think the F-250's crew cab, 4x4 is rated at a max GVW of around 9,600 lbs.

However, just because that's how they are rated, doesn't necessarily mean you should load 'em up that way. I think all the light duty truck manufacturers are a bit optimistic in their published ratings.

RCE

THis is highely debatable because Detriot has been putting less springs in newer model trucks than older one to make them ride more carlike for sale while uping the GVW rating too. TIres are your major concern with weight and I have never seen nor heard of the first person "busted" for beong over weight in a 3/4 truck. If you have one bring it on. Also bear in mind that if you are realy into this weight police thing that when you get a diesel option, you redcue youe "legal" load capacity by 500 to 700 lbs beause of the added weight in the same chassis.