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Weird Code On 460 Block

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Old Jul 2, 2025 | 09:56 AM
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Weird Code On 460 Block

I have a 460 block that I'm working on right now for a customer. It is just a typical D1VE-A2B block with an early 1973 casting date code. On the back of the block it has this mark:



I wonder what that meant at the foundry?
 
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Old Jul 2, 2025 | 10:57 AM
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Australian? not likely, but ranger there was px

Maybe that was a flag for it as a core block? (part exchange)
 
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Old Jul 2, 2025 | 12:00 PM
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I didn't look at the foundry mark but it should be the one for Flat Rock on a D1 block. Sometimes you see things like an X or what looks like a C or a J on an FE block but I don't think that I've ever seen a 385 series block marked like this. It must mean something about the pattern at the foundry.
 
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