Correct 12 bolt pinion flange for LS-6 rearend ?
I was comparing my 12-bolt rear end to my friends the other day and I noticed we both have the same numbers stamped on the flange which is 9210 GM..
Mine is a 12-bolt with 4:10 heavy duty posi, and his is a 12-bolt with 3:31 posi.
They are both 1970 Chevelle SS one with the LS-6 and the other with 396-350 h.p.
Which rear end has the correct pinion flange?
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