This is just an information request post. I had a 2005 6.0 truck configured identical to this truck. (SRW F-350 4x4 SB CC) Back then, I believe the front and rear axles were the same for the f-250 and 350 SRW. The front was a Dana 60, and the Rear I believe was Sterling. Only difference between trucks besides the badge was on the F-350's they had a spacer block on the rear to allow 2" more spring sag before contacting the overloads. I was told this is not the case on the 2012's.

Does anyone have some more definitive information?

I am also very curious about the different GVW ratings of these trucks. My truck I believe has an 11,300 GVW, the guy I was talking to has the identical truck to mine but a camper package, it has an 11,500 GVW, and when looking at them I saw similar trucks all the way down to 10,000 GVW. I know someone told me the lower GVW was for states where licensing requirements drove the lower limits, but what physical changes differentiate the different GVW ratings on F-350 trucks?

 

The 10,000 lb rated trucks are the first package when you build one on line. I have that and I believe it is the same as a standard F350. No DOT numbers or inspections and easier insurance.

 

The axles are identical, see below:

 

The axles are identical, see below:

I am missing something, I see nothing below. Did you forget to attach something or am I really that dense? (My wife thinks so!)

 

If you're checking at work, your network admins are probably blocking photobucket (I do).

Here's Tom's post with the image on FTE's web server.

 

The rear axle rating on the F350 according to Toms chart is 1000 lbs more, I am tired and eyes are sore. Rear Axle differences for F-250/350 include: Max Rate 6200/7280, Axel Shaft Spline Minor Dia. (in.) 1.36/1.50, Spline Major Dia. 1.50/1.57, No. of Splines (hub end) 35/37. While the F-350 SRW, F-350 DRW, & F-450 pickup are class 3. F-350 SRW rear axle has thicker axle tubes. Sources are Wikipedia, Ford Tech spec, and 2011 F series builders guide. The overload spring above the spring pack? Not sure if the F250 has that. I just know my F350 doesnt sag when I put 2500 lbs of pin weight on it. I have seen posts of some complaints of bad sag on F250s. After some further reading, it appears the F350 axle carries more weight and the springs need more flex room thus the big blocks and overload spring. looks to me like the two vehicles have dif rear axles but identical frot axles. mike

 

You bring up a good point, we've had this discussion every few months over the last several years it seems.

Unfortunately I don't have the thread to reference, but this has been covered in the past a few times. See below:



Note how there is a different spline count and shaft diameter listed for the F350 SRW and F250, but nothing listed for the DRW trucks? One of our members that works at a Ford dealer parts department went into his system and determined that the part numbers for the components for each axle is identical. The axle shafts are the same, there is no difference between their spline count or diameter. What most of us believe is that the larger spline count and diameter is actually for the Dana M-80 that's used in the DRW trucks. The axles are identical.

As far as the overload spring, it comes standard on every F350 SRW trucks but it also comes on all F250s with the camper package.

 

Thank You for the information.