KB167 vs KB399

Claudius said

The block is wrapped in plastic after its dip in the hot tank so I cannot look it over clearly until the weather warms up and I can unwrap it for further work/paint. Can anyone please tell me where a 318 block might be stamped with some kind of a serial number so that I may be able to determine the year of the casting? Also, could a link to a suitable decoder be made available

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The place where they are the numbers are stamped onto the block is driver side front under the cylinder head, next to the timing chain cover.

I don't know where there is an online decoder, but I am sure if you post all the numbers you find on the block on here some one can figure it out. I have a HPBooks on rebuilds that is pretty decent for identification that might help.