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Old 12-07-2011, 07:07 PM
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GM 26015047 10 bolt rear identification

I have a 1984 Olds Ninety Eight. The previous owner replaced the original rear with a 10 bolt posi rear with the casting numbers 26015047 with "4 H" cast above them. There is also a "175" casting. On the right axle tube there is casted "CFD" The rear measures 56" from left to right. And there is an electric plug (assumed to be some kind of speed sensor).

I am looking to identify this rear (what year & model it came from) so I can identify & replace the axles. Simple as it is to pull them for identification, I prefer to attempt to identify the correct axles (length, spline count etc.) prior so I only have to pull them once.

Thanks for any help,

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Old 12-08-2011, 10:51 AM
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Try Google that Casting #. None of the #s you listed are the Date Code.
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