I have a 440 block that supposedly came out of a 1970 6 pack cuda. Casting 2536430. production date 11/10/69. I can find no serial number, possibly warrant replacement? Plate by distributor has stamping S 440 and 5 11 2, not familiar with these numbers. Any ideas? Is there a difference between a 6 pack block and standard block? I am thinking not, so without a vin, block would be nothing special?
