Dually to standard axle

Kilroy

Adventurer
Anyone know how big a deal (work, cost) it is to convert a dually to a regular 2 wheel axle?

I'm looking for a dodge diesel and keep seeing dually's around, but don't need or want them. Want to use a flatbed to mount camper so changing bed will not be an issue.
 

Overdrive

Adventurer
The rear axle housing for a dually is about 6" wider than a SWR. You'd have to get the SWR housing from a junkyard and then it should bolt in.

As for the front, the hub extension just unbolts so you can put on regular wheels, but I believe you have to remove the rotor to unbolt it. (This is for <2002, don't know if it's the same for >2003.) about.)
Scott
 
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edcasey

New member
I converted my 2000 Dodge 3500 about 2 years ago. Just like you I got a great deal on it but didn't want a dually. I participate in many forums (Cummins, Dodge, campers...) and get asked about the conversion all the time. Here's a write up about the conversion. I know you aren't interested in swapping beds so just ignore that part. This covers all second generation Dodge 3500 from 1994 to 2002. The 2003 and newer have different axles and I can't help you with those.
The conversion is actually very simple. As far as the front end goes just remove the wheel spacers and install a set of rims from a 2500. You'll also need different lug nuts. I bought a set of 32 lug nuts from Ebay that were used but in perfect shape for $20. The dealer wanted $8.00 for each one. I bought four used wheels off of a Ram 2500 from Craigslist for $200.
The rear end is just as easy. Pull off the dually wheels and install the 2500 wheels and lug nuts. The only other thing that I had to do was shorten the wheel lugs because they are too long to allow the wheel center cap to fit. You could change the lugs to 2500 lugs but I just cut them with a cut-off tool and then removed the lug nuts to clean-up the treads. It only took 10 minutes and the treads are perfect. The dually axle on the Dodge( I'm not sure about Ford or Chevy) is about 4 inches wider than a 2500 axle. Most people assume it is narrower but it's actually wider because to the large offset of the dually wheels. I know 4 inches sounds like a lot but it's not noticeable. The rear wheels on a stock SRW are two inches closer together than the front wheels (one inch on each side). On my truck, the rear wheels are two inches farther apart than the front wheels. So if you look at my truck from the rear, the rear tire is sticking out one inch farther than the front.
The only other difference from a stock SRW is the size of the brake drums (see pics). It's not a functional problem but you do see more of the brake drum. Both the Dodge 2500 and 3500 have weak rear brakes. It's a common complaint among Dodge owners. Without the rotating mass of four rear tires, my rear brakes actually work very well but aren't excessive.
The harder part of the conversion is the bed. You could take off the dually fenders and fix the bed but it would take a lot of body work. If you look at the attached photo you'll see several small holes that the bolts went through, a two inch hole for a marker light, a large hole for the fuel fill and a portion of metal removed above the wheel opening. I found it much easier to replace the bed. I got very lucky and found a bed and tailgate on Craislist for $350.00. It had on very small dent and the paint was failing on the passenger's side but that wasn't a problem for me because I needed to paint it to match any way. There were just a few other things I had to do. I to cut a few inches off of the rubber fuel fill hose which was done with a razor knife. I also had to swap the fuel fill inlet (because of the large hole needed for a diesel fuel pump nozzle) but that was only 4 small screws. The last thing was to extend the rod that lowers the rear wheel. It needed to be about one inch longer. I understand this wouldn't have been necessary if the replacement bed was the same year as the original bed.
I sold all the old parts on Ebay. I actually made more than enough money to pay for my paint job and some body work. The dually fenders are a real money maker. Dodge wants a lot for them. I found a lot of people wanted them because theirs where cracked and they couldn't get a state inspection stick until they where replaced.


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Kilroy

Adventurer
Great write up. Thanks. Just bought 3500 single wheel though. I'm sure others will find your write up quite valuable.
 

WKCwith5

Adventurer
I would like to try this conversion on my 2003 3500. Do you know what the diffrence in axels are and has any converted the 2003 as mentioned above. I would like to mount 19.5 tires.
 

edcasey

New member
The only one I know of who has completed a conversion on a 3rd generation Dodge can be seen here http://www.cumminsforum.com/forum/show-time/101130-new-look-no-more-dually-shes-clean-shavin-lol.html It came out looking awesome. I believe he swapped parts with someone who had a SRW Dodge. I can't give you any info on 3rd generation Dodges because they use AAM axles instead Dana so it's completely different from my swap. If you go to the above link and PM the author I'm sure he would be willing to give you information. Guys on the Cummins Forum are usually very helpful.
 

Wanderlusty

Explorer
I actually like that it sticks further out in the rear, as I have never really liked how most trucks the rear is narrower. It visually throws off a vehicle, and I don't really get why that the trucks are done that way. I would think the wider would actually be an advantage, stability wise?
 

lmaynard

New member
Fat_man,

I like the wider rear track as well, but I had heard in the past that the narrower rear track is done so that you don't get hung up. If your front end makes it through, then the rear will too??

I know that this is very true of mountain bikes (obviously not the same, 2 wheels vs. 4, stability, all that) where they tell you to have the wider and more aggressive tire on the front instead of on the rear where you'd normally think it would do more good.

I don't know this for a fact, but am throwing it out there for consideration and possible correction by someone who does know. I've never quite understood this argument, as some dually setups obviously have a wider rear width than front.

Does anyone know if this narrower rear setup is for tracking purposes, or exactly why does it exist?

Thanks in advance for any information!

Fat_Man said:
I actually like that it sticks further out in the rear, as I have never really liked how most trucks the rear is narrower. It visually throws off a vehicle, and I don't really get why that the trucks are done that way. I would think the wider would actually be an advantage, stability wise?
 

bftank

Explorer
bringing back the dead i know,

i also have a dodge 2001 dually, planning on converting it to single wheel hopefully this fall. i will be using hmmvv 12 bolt rims. they have 7" of backspacing and are 16.5"x9". just throwing it out their as an option.
 

wyocoyote

New member
Fat_man,

I like the wider rear track as well, but I had heard in the past that the narrower rear track is done so that you don't get hung up. If your front end makes it through, then the rear will too??

I know that this is very true of mountain bikes (obviously not the same, 2 wheels vs. 4, stability, all that) where they tell you to have the wider and more aggressive tire on the front instead of on the rear where you'd normally think it would do more good.

I don't know this for a fact, but am throwing it out there for consideration and possible correction by someone who does know. I've never quite understood this argument, as some dually setups obviously have a wider rear width than front.

Does anyone know if this narrower rear setup is for tracking purposes, or exactly why does it exist?

Thanks in advance for any information!
I'd like to know that as well. I believe having different rear track could present some off road problems in judgement. I hear the most common blowout is the rear right inside sidewall hitting a rock (on left hand drive cars, eh) because that is the hardest to judge. I'm about to go from dually to single and guess I may end up with nominal wider rear track. I bet I'll be more likely to mess up the right rear sidewall parking is all, but it sure wont be as far out as when it was dually.
 

GHH

New member
Anyone watching this old post? Could you not solve the offset issue by adding a 2” spacer in the front to make up for the 4” increased space in the rear and then end up with “normal” tracking front to rear just wider?
 

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