250 to 350 conversion - The 1947 - Present Chevrolet & GMC Truck Message Board Network

NicoSlam · 01-04-2011, 10:03 PM

ok, so I removed te overs and took pics. Did not find any casting numbers but did find the following. First two pics show the "saw tooth" and "hump" shapes which are used to identify if you have 906 or 062. As you can see, each head has both marks go figure.
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the last pics show the stamps on the head which dont look like a GM stamp. Does anyone know what they mean?
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01-04-2011, 10:03 PM	#16
NicoSlam Registered User Join Date: Nov 2009 Location: San Antonio TX Posts: 251	Re: 250 to 350 conversion ok, so I removed te overs and took pics. Did not find any casting numbers but did find the following. First two pics show the "saw tooth" and "hump" shapes which are used to identify if you have 906 or 062. As you can see, each head has both marks go figure. the last pics show the stamps on the head which dont look like a GM stamp. Does anyone know what they mean?

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