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The casting number will not tell you the casting date. You need to find the casting date information from another area of the block. Since there are multiple locations and multiple ways this information can be stamped on the block you should review the site http://www.mortec.com for a detailed list of locations and examples of what you are looking for. The site will also help you decode all the information.


My 1981 350 sbc casting date and where it was made is on the front of the passenger side head just below the alternator. Write those numbers down and go to MSA-1.com for your answer.
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15y ago

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