Help with ZL1 Block casting marks - The Supercar Registry

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Help with ZL1 Block casting marks

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02-11-2005, 07:22 AM

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Yenko Contributing Member

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Location: Houston, Texas

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Help with ZL1 Block casting marks

I am in need of help deciphering some markings on a 3946052 undated ZL1 block. The letters SYEH are stamped in the block as well as stenciled on the back. Also the letters KPT CST are cast into the back of the block just to the right of the casting number 3646052. It would be great if someone could help me decipher the meaning of the markings.

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Rick

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