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Gm rear casting #26015047

3K views 1 reply 2 participants last post by  SSedan64 
#1 ·
I am trying to identify a posi rear that was put into my 1984 Olds NinetyEight prior to my purchase. I was told it came out of a 78-79 Impala or Caprice (I can't confirm this). The casting number is 26015047 with a "4 H" casted above that number. I am trying to purchase new axles (current bolt pattern is a 5 on 5", looking for a 5 on 4.75")

Can anyone tell me if I can determine the spline count & axle length without going through the trouble of pulling the axles?
 
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