That would depend on what year you are comparing them. I have a 02 and they are basically the same for that year; however, different years will give slight variations. If you do a search, this topic has been discussed extensively.
02 F250 4X4 7.3, PC 6 ˝ lift, Centerline wheels, PC 37x12.50R-17's, Warn PP HD Winch, Jotto Console, Scanner, Icom HAM radio, 91 Gal. Aux fuel cell, Diamondback HD bed cover, Warn Hubs, dual steering stab, Step2 Bed steps, Warn FF, AIS, 4" t/b exhaust with Aero turbine muffler, backup buddy lights, Mag-Hytec diff cover & tranny pan, SGII, 6.0 T Cooler, ELF7405 with oil By-Pass, IH bellowed ups, Gen 2 FRx, HPx, CCV Mod, CAT ELC, ez down t-gate, Fumoto drain, Rev/Cargo LEDs, 4 pillar gauge with ISSPRO, DP Tuner
On the 7.3's, the only difference is the F350 has a 4" block in the rear, while the F250 has a 2.5" block. Now, there are some options available on both like rear overload springs, but that is the only consistent difference. My truck is an F250 with the rear overloads and I added the 4" blocks from an F350 when I installed a 2.5" leveling kit up front. In essence it is the same as a SRW F350 now.
-Bob-2003 F250 Lariat 7.3PSD CC SB FX4
Kwik (6637) Filter, RE leveling kit, IssPro EV2 Gauges, PHP tunes fined tuned by Cody (cleatus12r), Hutch&Harpoon, FRx, HPx, John Wood Trans, Swamps HV/HF IDM, Firestone Airbags, RiffRaff Rear Diff Cover, Van turbo w/ported housing, non-ebp outlet and pedestal, Magnaflow SS 4" Exhaust
Been down this path here in Australia.
SRW F250 vs SRW F350 pros & cons. (99.5 - 2003)
Found the same as you fellas that the only differences are.
1. F250 has approx 2" block rear and the F350 an approx 4" block. For more spring travel and an increase in payload hence increase in GVM (GVW).
3. Higher registration fee and because GVM (GVW) is over 4,500kg (9921lbs) you also require a Light Truck licence to drive it. (I had one but wife had to got do an upgrade on her licence).
I got my F250 ungraded with HD springs and subsequent engineers report to increase the GVM (GVW) to better than an F350 rating.
Seeing I'm paying extra for the registration and have higher GVW than the F250, I've now re-badged mine as an F350..
But like all things there is a trade off. One is as mentioned above the higher registration cost and bigger licence.
The other is that even with a upgrade there is 'no' change to the GCVM (GCVW). That is the Combined weight of the truck and what it is towing.
Nor is there any difference between the factory GCVW for the SRW F250 and the F350.
This is simply because there is no difference in the actual components. Same springs, differential, drivetrain and brake size etc.
So the trade off is even though you can load more into and onto the F350 you can still only end up with a GCVW of 9071Kg (20,000lbs) (same as F250).
A few people who have done GVW upgrades have been trapped by this.
They have loaded up the truck to the new GVW and then hooked up the trailer, caravan, 5th wheeler. They've been pulled over and put over a set of scales and found to be over the legal GCVW.
It's just a point to remember if anyone is thinking of doing this.
The reason I when for an upgrade was that I found with the added accessories on the F250 (canopy (shell), bull bar, rear bar, longrange fuel tanks full, bigger heavier tyres etc; that I'd eaten so much into the payload without putting anything in the back that it was too restrictive. So needed to increase the GVW and hence payload.
Reg “Political correctness is a doctrine fostered by and illogical and irrational minority, who hold forth the proposition that it, is entirely possible to pick up a turd by the clean end”
--------------------------- Aussie spec Brazilian built 2005 (US 2003) F-250 Superduty 4x4 7.3Ltr Powerstroke: PHP FU2 6 Pos’n Chip, 6 x ISSPRO Promax Guages, AIS Intake, Zoodad, Cowl Hood, AIH Delete, DIY CCV, BTM muffler, MBRP 4” Black Tip, RiffRaff FRx,HPx,OCR, JWVB, ARB Air Lockers Front & Rear, V10 Tranny cooler in series with Stock Tranny cooler, Deep Tranny Pan, ARB Bull Bar, Edge Evo (for PIDs & Codes only), Long Range Fuel Tank, VMS in Dash GPS Street & Off Road Nav, Toyo OPAT AT 305 70R 16”on 10” Rims, Moog Greasable Ball Joints, Tough Dog Steering Stabiliser, HD Suspension for GVWR (GVM) Upgrade to 5,000Kg.
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