07-08-2003, 01:26 PM | #5 |
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Join Date: Apr 2000
Location: Leesburg, GA
Posts: 746
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Hollanders shows KAA as a 3.07 non-posi 12 bolt out of a 74-79 C-10. KKA is a 3.73 14 bolt non-posi used in a 74 C-20 and 81-83 C-30. Since you said it was in a 1/2 ton it must be the 3.07. It doesn't show how a 74-79 rear ended up in a 72 GMC. Hope this helps.
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