i am having trouble finding another rear diff centre for my 3.9 ratio 1984 N/T sierra. The one in it is welded so i cannot rebuild and i can only find a 4.1 ratio secondhand.
Does anyone know if the spider centre is interchangable between the 3.9 and 4.1 ratio diffs.
This way i can buy a 4.1 and just use the spider gears of it.
Does this make sense/work????????
Does anyone have a diff centre i can buy???
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Sierra rear diff
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