how much wider is a dually rear - Ford Powerstroke Diesel Forum
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Old 12-18-2009, 02:26 PM
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how much wider is a dually rear

Does anyone know how much wider the dually rear end is then a srw?
I have been told 1.5 inches a side. That would be 3 inches wider total? Wondering if anyone has actually measured or knows for a fact. I am making mine a srw.
If its 3 inches total I can use 05-07 wheels and get a normal stance due to the 1-7/8 more back spacing. I need an actual factual number.
thx for the help
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Old 12-19-2009, 03:27 PM
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bump........
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Old 12-19-2009, 05:24 PM
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Much wider. The fenders are about 4" on each side.
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Old 12-19-2009, 05:56 PM
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what do you mean fenders? Maybe it was the way i asked.I am only concerned about the rear axell, not fender width. The fenders are coming off.
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Old 12-20-2009, 03:25 AM
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The 99-04 DRW uses a Dana 80 rear end which, WMS-WMS is 67.5" wide. The 99-04 SRW uses a Sterling 10.5" rear end that has a WMS-WMS of 68.875" wide. All of our trucks, 99-04 uses some variation of the Dana 60 front axle either full Dana 60 or at least a Dana 60 housing with Dana 50 inards and it has a WMS-WMS of 69.25" wide. The outward differences come from the wheels that are used and there is a substantial step out on the DRW bed, but if all you want to do is run a SRW bed/wheel combo you would simply need the correct set of wheels to have a factory spec rear tract width. A 1.375" spacer with factory wheels will do that for you. Hope it helps.
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Old 12-20-2009, 03:31 AM
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are you saying the dually dana 80 is narrower then the 10.5? I thought it was wider?
whats WMS stand for?

Last edited by melmount; 12-20-2009 at 03:37 AM.
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Old 12-21-2009, 01:20 PM
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wheel mounting surface
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Old 08-18-2010, 07:27 PM
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resurrecting this thread. I am thinking of converting my 02 dually. So let me get this straight. Get a set of 1.375" spacers for the rear, pull the spacers off the front, new lugs for the front. New set of wheels...
Now for converting the bed...

I can either hunt down a srw bed or pull the dually fenders off. If I pull the fenders off, is it just a matter of patching the mounting holes and a respray? Or are the beds totally different?
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Old 08-19-2010, 02:53 AM
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only dually rears from cab and chassis are narrower. A regular dually rear is wider! I am positive. I went back and forth trying to gather info.
If you get wheels for an 05 and up truck they have 1 7/8 more back spacin g then 04 back factory stuff. You will need front 2 inch spacers after removing the large ones up front. The back needs none. Its wider.
As far as the bed just fix holes and the cut out at the bottom.
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Old 08-19-2010, 04:02 AM
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Hey any of you that want to convert from dually to SRW I have a rear out of my truck worked great makes the swap eaiser then all you have to do is pull the front spacers off and bolt up some wheels an go. just make an offer
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