Darkrider
Dexter
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9.25 is the clean one, 8.25 is the dirty one (not my pics, I nicked them off the 'net)
If you see this:
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when you take the hub center off, you have a GM corporate 14 bolt full float axle.
If your differential cover has 14 bolts and does not look like the picture above, you have a 14 bolt semi floating axle.
If your differential cover has 10 bolts, you've got the little brother that GMT400's came factory with.
The confusion arises at the 2500 level. GM made a "half step" model with the lighter GVWR 2500's. BAsically, it's 1500 with a little heavier spring rate and the 14 bolt semi float read axle. The rest of the truck is pure 1500.
The "all in" 8600lb GVWR 2500 is nearly a 3500 mechanically....for the nit pickers, notice I said NEARLY.....
Great info there BJ!
Just to add: The "Half Step" 2500 that BJ mentioned is our F44 packaged 1500s. I think GM realized the confusion at one point and simply just started throwing 1500 badges on these so called 2500 LDs
Now i have a question for you BJ would the 8600 GVWR 3500s be considered 3500 Light duties then kind of another Half step like they did with the 2500LD/F44 1500?