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casting date vin

  1. Stock Chevy Discussion 55-56-57
    First question (pic below): cast dates on my '57 283 intake and block are "G1057" So what is that date? 1-05-57? It can't be 10-5-57 because the car rolled off the line in August of 57. And 1-0-57 doesn't make any sense. Help? Body numbers - each Fisher body has a unique number, I am told...