Dually to SRW conversion
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Joined: Jul 2008
Posts: 11,231
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From: Thomasville, GA
Dually to SRW conversion
Has anyone here done a conversion from a dually to a single rear wheel on their truck?
I have a '95 F350 dually, got a great deal on it so I couldn't pass it up, but it's a Dually and I really don't need it to be. I'd rather have SRW.
What must I do to convert it to SRW, besides the obvious (new bed, different wheels)?
I have a '95 F350 dually, got a great deal on it so I couldn't pass it up, but it's a Dually and I really don't need it to be. I'd rather have SRW.
What must I do to convert it to SRW, besides the obvious (new bed, different wheels)?
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
From what I've read here the dually is a narrower frame and axle, changing to single wheels would look funny.
Swamping housings would require the spring perches on the axle relocated inboard.
Myself I'd leave it a dually before going through all that, above and beyond swapping a bed and wheels on it that is.
Swamping housings would require the spring perches on the axle relocated inboard.
Myself I'd leave it a dually before going through all that, above and beyond swapping a bed and wheels on it that is.
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
<i>dually rears are wider than stock- at least the one I got of the E350 I had is. it is about 6" wider than a stocker.</i>
Yea overall with the wheels on is wider, but from what I read here the backing plate to backing plate is narrower to allow for the dual wheels IE; shorter axle tubes.
That and the springs are inset closer together to allow room for the inner wheels. I'm not sure what else is different but I think it was said that the frame is narrower in that area to.
Anyway it didn't sound like switching one to single wheels would be a "quick and easy" task from what was posted on the subject.
Yea overall with the wheels on is wider, but from what I read here the backing plate to backing plate is narrower to allow for the dual wheels IE; shorter axle tubes.
That and the springs are inset closer together to allow room for the inner wheels. I'm not sure what else is different but I think it was said that the frame is narrower in that area to.
Anyway it didn't sound like switching one to single wheels would be a "quick and easy" task from what was posted on the subject.
Posting Guru
Joined: Apr 2008
Posts: 1,249
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From: Jersey Shore
Wrong year for the truck.. at least in my case, I took the budd wheels off of my 77 crew, the fender/flares were bolt on to a stock bed, check to see if yours are, the rear is the same width as the SRW, but they do make different width rear diff., my 88 f350 4wd mason dump has a wider rear diff than my buddies 4wd mason dump, by at least 6+", my advice, check your width and go from there, the budd adapters, I believe unbolt from the front rotors. It seems that the 33's that i put on my crew were more expensive than the 16" tires that were on the budd wheels, only now I save on tolls and I only have to buy 4 tires instead of 6, so I guess you save in the long run.
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Postmaster
Joined: Dec 2003
Posts: 2,833
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From: Honkytonkville
<i>dually rears are wider than stock- at least the one I got of the E350 I had is. it is about 6" wider than a stocker.</i>
Yea overall with the wheels on is wider, but from what I read here the backing plate to backing plate is narrower to allow for the dual wheels IE; shorter axle tubes.
That and the springs are inset closer together to allow room for the inner wheels. I'm not sure what else is different but I think it was said that the frame is narrower in that area to.
Anyway it didn't sound like switching one to single wheels would be a "quick and easy" task from what was posted on the subject.
Yea overall with the wheels on is wider, but from what I read here the backing plate to backing plate is narrower to allow for the dual wheels IE; shorter axle tubes.
That and the springs are inset closer together to allow room for the inner wheels. I'm not sure what else is different but I think it was said that the frame is narrower in that area to.
Anyway it didn't sound like switching one to single wheels would be a "quick and easy" task from what was posted on the subject.
The backing plates may be narrower, but on this axle I have the distance between wheel mounting surfaces is wider than stock. If you put straight wheels on it, not budds, and put it next to another axle, it will be about 6 inches wider. I can get pics to prove it, it is sitting right next to a 10.25 axle from a SRW truck. There are huge drums on this thing, and small spacers. These axles have to be wider. If you look under most trucks, there isn't enough space between the tire and leaf spring to bolt a budd wheel on it. I don't think you realize how much difference there is from a budd wheel to a straight wheel. I mean it looks obvious, but they are close to 7-8" difference in offset, that's a huge difference. I am going to experiment later, I have a SRW truck outside sitting on budd wheels facing out(because they are short and it's the only way it fits in the barn LOL- it's orange truck in my sig) I will unbolt one wheel and see if it will turn around and face inward like the inside on a rear dual would, and see if it rubs the leafs or not. I will update later.
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Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
Quick search of the forums shows the difference is 4", yes the dually being exactly 4 inches wider then the single wheel counterpart, backing plate to backing plate.
One poster took the measurement on both single and dual sterling axles and posted the exact numbers.
One poster took the measurement on both single and dual sterling axles and posted the exact numbers.
Postmaster
Joined: Dec 2003
Posts: 2,833
Likes: 0
From: Honkytonkville
I didn't measure backing plates, I did measure from where the wheel mounts on both axles. The SRW dana 60 measures 66" even. The DRW dana 70 measures 72 3/4". Almost 7" wider track width on the duallie axle. Also, on my 82 3/4 ton, the duallie wheel will not bolt down because the tire/wheel hits the leaf spring, as I suspected. Hope this helps any confusion.
Fleet Mechanic
Joined: Nov 2003
Posts: 1,500
Likes: 2
Okay, a couple of useless blerbs from me while I'm here. Everyone talked about the problem while I didn't see anyonbe identify the problem.
1. Dually's are usually dana 70's in the F350 in that time period and, yes, they are wider. The Dana can be told by the 10 bolt cover.
2. Dana's are NOT found all the time under these trucks. I picked up a 1989 F350 with a Sterling 12 bolt Dana under it.
3. I have swapped out the Sterling Dually under my 1989F250 for a 1989 Dana 70 and it is 4" wider but everything bolted right in (sping pad mounts, ETC.)
The biggest problem I ran into is the size of the req'd hub for the Dana 70 in this application. It was NOT a regular size Dana 70 hub due to the increased diameter of the tubes:
IMG]http://img.photobucket.com/albums/v639/mgawat/lengthofinnerportionofhub.jpg[/IMG]
Hope this helps.
1. Dually's are usually dana 70's in the F350 in that time period and, yes, they are wider. The Dana can be told by the 10 bolt cover.
2. Dana's are NOT found all the time under these trucks. I picked up a 1989 F350 with a Sterling 12 bolt Dana under it.
3. I have swapped out the Sterling Dually under my 1989F250 for a 1989 Dana 70 and it is 4" wider but everything bolted right in (sping pad mounts, ETC.)
The biggest problem I ran into is the size of the req'd hub for the Dana 70 in this application. It was NOT a regular size Dana 70 hub due to the increased diameter of the tubes:
IMG]http://img.photobucket.com/albums/v639/mgawat/lengthofinnerportionofhub.jpg[/IMG]
Hope this helps.
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