Thread: GM NOS 3967811 7115 6223 Crankshaft Casting change
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Old 06-15-2017, 12:43 AM
bugsy bugsy is offline
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I believe 7115 is a 427 crank and 6223 is a 396 crank also i belive the counter weights are 7/8 think for 427 and 3/4 on 396. just my opinion.
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