I have a fairly low mileage 1970 455 motor (66K miles) I am cleaning up. I have the timing chain cover off and the timing chain seems to have a fair amount of slack. Should there be any slack? If so, how how deflection is acceptable?...meaning, if one side is taught, how much should the other side deflect and still be OK? Mine "loose" side deflects about 1/4". Thanks for any help!
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