Correct. You can use your F250 springs with the dually axle. Same spring perches, spring width, spring mounts. Everything.

I swapped springs and all when I did mine. Bolted right in.

 

so are the rear ends all the same back into the 80's too?

 

As far as I know. They started using the 10.25 in 1985??? I think.

Some of the 80's dually's still used Dana 70's and Dana 80's though if I remember right. You need to have the 10.25 rear because of the VSS.

Basically, you can swap the whole dually axle, or use spacers to fit the dually wheels on your stock axle.

 

I have been thinking about a real cool project where I could make the DRW fenders removable, and just use the spacers for the rear and we were talking about. Then when you're driving normal, you can have a SRW truck so you don't have the DRW stickin way out there like some folks don't like, and when you need to haul a heavy load or a big trailer, you can slip it all on there and be stable and safe... That is why I have been trying to see if you can make a SRW axle work as a dually setup and still see all the same strength and benefits. I think that would be a pretty sick mod...

 

dually 4x4 in these years are sexy.....

 

County garage has a 4X4 dually, white dump truck, with a 5 spd, waiting for them to put it up for auction.

 

there are 6 differences between a F250 and f350 SRW
1 The fender badge
2 the door jam sticked
3 the 4" (f350 block) vs 2.5" (F250 block)
4 D60 (f350) vs D50 TTB (F250)
5 flat front springs(f350) vs Recurved front springs (F250)
6 The 1000 more to have your truck say it can carry 1500 lbs more

 

well, the 4" block in for the 350 has to be due to the higher front end if you run the D60.. I do believe the front springs are the same on the 250 and 350 as I was comparing exactly that on my front end vs. a buddies 350 front end. And the 350 is technically only rated for 500lbs. payload and 1000 lbs. more towing capacity both due to the D60 vs. D50. Essentially they are the same truck with a different front axle. (both being SRW that is)

 

The F250 front springs are different. They are stiffer and tapered to acount for the different flex of the D50 front end.

F350 front springs are actually not as stiff.

 

hmmm... god I hate this D50, why did ford have to do that...

 

They're not bad axles... just need to keep the stock geometry if you lift it and keep the ball joints and everything maintained.

 

well the only way to lift a D50 is through a cheese-ball drop bracket lift. which essentially makes the lift useless because all you're doing is moving pivot points in the stock suspension. (I hate drop bracket lifts if you couldn't tell) I only want it lifted a couple inches.

And the D50's are horrible, the way they cycle, you can't really keep the tires on the ground straight so you always end up scrubbing tires with a truck this heavy. Sucks, stupid design. The D44 TTB and D35 TTB were ok on the smaller lighter stuff, but the D50 is designed a little bit different and doesn't work nearly as well. It's more prone to binding in offroad situations as well because of the super short drivers side axle housing.

 

So here is what I have found out when it comes to the differences between the two different axles (DRW and SRW).. 4" total in length.

F-250 SRW


F-350 DRW


Now, as soon as I can find my tape measurer, I can get numbers for longer distances. From what I was able to with my micro ruler, was that there is 2" more on each side of the spring mounts to the hubs, giving a total of 4" wider. I want to make sure that from the differential to the spring mounts, the measurements are the same between the DRW and SRW. When I ran a rope measurement end to end, the DRW is 4" wider.

I cant believe I cant find my danged tape measurer!!!!

 

huh! well would ya look at that... it looks like the distance is all from the spring perch out to the hub. The distance from the punkin to the spring perch looks pretty much the same on the two. Wonder if I can find a set of dually rims that will still let me do my removable DRW setup, or if just a set of 2" wheel spacers would do the trick?

 

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