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<<< THE GAUGE WHORE...
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Discussion Starter #1
The 2WD truck I am driving right now I think has a LS rear end, a few questions...

1. The 10.5 is on all superdutys correct? Whether 2WD or 4WD? (thinking axle swap)

2. What is easier, swaping axles or swaping the diff's???

This is all assuming the rear end is a 3.73 ratio...
 

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All done now
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22,486 Posts
Except duallys.
 

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OBS junkie
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Duallys had the Dana 80 like the Dodge or the old F450 (Superdutys).
I think you might just be better off swapping the axles. It's harder for us around here just due to the amount of rust we get on everything. Look for a tag on the the diff cover & look for 3.73 or 4.10 somewhere on it. If you can't find the tag just drive it, what are the RPMs in 4th gear (OD) going 55mph? A set of 3.73 will usually run 1600rpm or so. A set of 4.10s will run about 1900rpm or so.
 

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Corona Killa
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Swapping the axle would be 100X easier and is as straight forward as it can get and you don't have to check backlash and gear mesh.
 

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OBS junkie
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that diff isnt a dropout pumpkin,it would take a guy that knows rearends about 4-5 hrs to pull the old one and install and set tollerences,thats if you understand what you are doing....
Only tools needed for that are 1-2 extra guys, torches, impact wrench, 6 pack, jack, jack stands, spare axle & a few hours.
 

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It didn't take me 4 hours to setup my diff when I had my last one apart? There isn't any trick to setting up a diff, no black-majic. I'd just put a good LS in your housing. If you pull yours apart you can put a good LS in instead of the clutch type OEM you'd get by swapping an entire housing. Unless you want a clutch LS, some guys really like 'em.
 

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<<< THE GAUGE WHORE...
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Discussion Starter #10
It didn't take me 4 hours to setup my diff when I had my last one apart? There isn't any trick to setting up a diff, no black-majic. I'd just put a good LS in your housing. If you pull yours apart you can put a good LS in instead of the clutch type OEM you'd get by swapping an entire housing. Unless you want a clutch LS, some guys really like 'em.
I can swap the 2wd for free...:D
 
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