Re: 12 Bolt rearend identity
They share the same center section, which is what the casting number is from. You'll have to look for other cues as to what the entire unit originally came out of. Look for a series of stamped numbers on the pass side axle tube, facing forward. There's a 2 or 3 digit letter code that will designate the original application and gear ratio.
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1969 Chevelle SS396 L78 M22 4:10 Tuxedo Black
1970 LS3 Malibu 400 BB convertible
1970 LS3 Malibu 400 BB coupe
1970 Chevelle 300 series LS3 400 BB coupe, special order Monaco Orange
1970 Chevelle Concours Estate LS3 400 BB wagon
1970 Chevelle SS396 L78 M21 3:55 Tuxedo Black
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02-01-2006, 04:54 AM
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