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Casting codes.

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Post Fri Jul 13, 2007 1:40 pm

Posts: 2677
Location: Los Angeles, CA
Does anybody have a clue to the casting codes used on the 1937-1939 cylinders? I have the formula for the 1940 and later ones. Something like a large letter B then a boss with 12-7. But the earlier ones like 13-5 on a boss without a letter are a mystery to me.

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