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Unknown rear axle...help!

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Old Jan 18, 2004 | 12:24 PM
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Unknown rear axle...help!
Hey guys, I recently bought my '74 F100 (2WD) and the previous owner told me that "a buddy of his" put in a bigger rear axle than the stock one. So I was wondering if I could get some help figuring out what axle it is.

The only numbers I could see on it were on the front (toward front of truck) side: D2SW-C ,and lower down: 2649. Its a 10-bolt cover that opens from the front also, so there's no rear cover.

Lemme know if I need to search for other numbers or anything else to help figure this out. Thanks
 
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Old Jan 18, 2004 | 12:48 PM
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If the bolts are on the front, it sounds like the stock 9 inch rear that came in it!
The third member (the removable housing with the gears in it) might be modified though.
 
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Old Jan 18, 2004 | 04:42 PM
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The truck might have originally had a D44, then the 9" would be an upgrade.

Justin
 
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Old Jan 19, 2004 | 02:00 AM
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A 1974 F100 would have had a 9 inch in it.
 
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Old Jan 19, 2004 | 11:19 AM
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I thought the D44 was an option clear into the 70's.

Justin
 
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Old Jan 20, 2004 | 03:11 AM
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"I thought the D44 was an option clear into the 70's."

On the front, for sure.
But I dont think so for the rear.
 
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Old Jan 20, 2004 | 06:50 AM
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Some F-100's did have rear Dana 44's. I have only seen one that I can remember well.
 
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Old Jan 20, 2004 | 01:10 PM
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the upgrade was probably from a 28 spline 9" to a 31 spline 9". the read you stated is a 9" since it has the removable 3rd member like already stated. if i had to bet on it, i'd bet it was upgraded from 28 to 31 spline rear.
 
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