I've been comparing the 2004 specs with the 2005 specs. Ford increased the GVWR for 05 but it may not be as much as you think. Various models have different ratings, this is what I configured: F250, 4x2, Crewcab shortbed, V10.

2004 8800 GVWR 2955 payload
2005 9400 GVWR 3100 payload

So you gain 600 pounds in GVWR but only 145 pounds in payload. Is the other 455 pounds in the new frame, brakes etc?

Same truck but 4x4:

2004 8800 GVWR 2525 payload
2005 9600 GVWR 2800 payload

800 pounds more GVWR but only 275 pounds payload.


If you jump to a F350 (SRW) the numbers are a little better. F350, 4x2, Crewcab, shortbed, V10:

2004 9900 GVWR 4060 payload
2005 10600 GVWR 4300 payload

700 pounds more GVWR and 240 pounds payload

Same truck but 4x4:

2004 9900 GVWR 3630 payload
2005 11000 GVWR 4200 payload

2000 pounds more GVWR and 570 pounds payload

It appears that the 4x4's gain capacity from the new axle weight rating. Interestingly, the 2005 payload stays close to the same with the PSD option but the GVWR increases by 400 pounds. No huge loss in payload like in 2004.

I had decided that my next truck would be a F350 but hearing that the 05's had higher GVWR's I thought that a F250 might work. After running the numbers, I think I still may get the F350 just to have a good margin of capacity. NOTE: I got the specs from the CostCo Auto Program site I dunno if they are correct or not.

 

Those differences look very appealing to me, and probably to anyone who hauls a camper in the bed. 660 pounds here, 800 lbs there, it all adds up. Upgraded brakes are always a good thing. For load haulers (payload) the 350 is the only choice.

Now if they can get the 6.0 to be reliable....