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Rear Diff????

Old Nov 10, 2006 | 01:53 PM
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Plummer_62
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Rear Diff????

I have a 77 250 Highboy. I've got a bad pinion seal. I can't ID the rear end though the tags are so rusted they can't be read. I even tried to clean them up and to no avail. There is no model number cast on any of the webs either. Can't get a bill of material or date of the tubes either.... What do I do to figure this bad boy out? It is a dana I believe due to the shape not round like the ford 9". Hopefully someone can help. Thanks
 
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Old Nov 10, 2006 | 01:58 PM
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If it has an 8 bolt wheel mount it is a Dana.
What engine is in it ?

How about the data plate on the door does it have an axle code number ?

or
what is the GVWR of the truck ?
 
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Old Nov 10, 2006 | 02:23 PM
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the gvwr is 7700 and the axel code is 24J where do i locate what the code means? also it has a 351M in it..
 

Last edited by Plummer_62; Nov 10, 2006 at 02:24 PM. Reason: adding info
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