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Discussion Starter #1
I have an 85 f250 6.9 diesel. The door code for the axle reads 73 which translates to Dana 3.55 #6300. I was under the impression I had a D60 full floater but then I found out that the Sterling 10.25 is rated at #6250. That leads me to believe I have a D70. Any thoughts on what this axle may be?
 

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post a picture of the diff cover.
 

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Discussion Starter #5




I know they arent the best pics, but maybe they can help out. And it seems like the axle tubes are probably around 3.5 in.
 
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