Torque Converters for Internally Balanced vs Externally Balanced Small Blocks

Detroit Iron said

Here's another thought..... what if.... when the balancer was being rebuilt, they got the clock positioning off when it was put back together. Hmmm...

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The offset weight is one piece with the hub that is keyed to the crankshaft so even if the outer ring was indexed wrong or slipped the balance would still be right. However the tdc mark could be incorrect. This is a picture of a stock balancer. It appears to be in good shape but no guarantee it is correct.