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Labor Day Putting down your wrenches or time for MORE wrenching? 
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| | | Forums66 Topics128,018 Posts1,055,259 Members48,417 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jun 2005 Posts: 168 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 168 | What are the differences between the front axles and rear axles of the single rear wheel 3800's and the dually 3800's?
Did the front axles have a different hub, or was it the same axle as a single rear wheel 3800 but with an adapter bolted on to move the mounting surface out?
I'm also curious about the rear axle. Was the hub the only difference, or was the axle narrower or wider than the single rear wheel version?
Liquidated my projects Now looking for a decent '47-'55.1 3100, 3600, or 3800
| | | | | Joined: Aug 2018 Posts: 1,004 'Bolter | | 'Bolter Joined: Aug 2018 Posts: 1,004 | A while ago I tried digging through parts books to figure this question out I think the only difference on the rear axle is the studs pressed into the axle are longer to accommodate the extra thickness of two rims And I need to track down a set of these longer studs for one on my trucks
The front axle I’m not sure as my dually lost it’s special dually front bits long ago and is single wheel style on the front now.
But i also look forward to the definitive answers that hopefully will follow. -s | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy whateverpratt, the dually front axle hub is a one piece unit and is obviously different than the single wheel front hub, there is no "adapter" to space the dual wheel out. As far as I am aware the rear axle is the same for either single wheel or dual rear wheel application. the only exception is the one noted by 2ManyTrucks, longer wheel mounting studs for the dual rear wheel application, hope that helps | | | | | Joined: Jun 2005 Posts: 168 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 168 | Thanks guys, that's what I was looking for
Liquidated my projects Now looking for a decent '47-'55.1 3100, 3600, or 3800
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