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1969…Numbers Matching?

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Old Dec 6, 2025 | 10:27 AM
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Default 1969…Numbers Matching?
I believe this to be the original engine to my 1969 convertible 427. It was rebuilt and blueprinted by Clay Smith Cams(came with the documentation) in California but the deck was resurfaced to the point that the stamp is difficult to read. (See pics) seems like enough numbers match to validate but any thoughts? Are there other methods to validate other than the front passenger deck area? Thanks!



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Old Dec 6, 2025 | 11:25 AM
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Originally Posted by Pilotmike65
I believe this to be the original engine to my 1969 convertible 427. It was rebuilt and blueprinted by Clay Smith Cams(came with the documentation) in California but the deck was resurfaced to the point that the stamp is difficult to read. (See pics) seems like enough numbers match to validate but any thoughts? Are there other methods to validate other than the front passenger deck area? Thanks!


Look for casting number and date back of block
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Old Dec 6, 2025 | 11:39 AM
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Another place to check is the transmission, passenger side at the rear of the main case.



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Old Dec 6, 2025 | 02:39 PM
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you can use a weak acid to raise the numbers, its been done in gunsmithing for identifying damaged, destroyed and removed serial numbers for decades.
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Old Dec 6, 2025 | 03:25 PM
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Don't put acid on it, you will only raise doubts.

Last edited by AOS_L79; Dec 8, 2025 at 08:15 AM.
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Old Dec 7, 2025 | 01:22 PM
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Ping DKS-106
He owns Corvette Validation Services and is the C3 expert on stampings
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Old Dec 7, 2025 | 03:14 PM
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Look at the back shelf and identify the block casting number and the casting date code.
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