I was looking at some old posts on engine id trying to figure out what yr my engine is.The block number on the drivers side 2806830-9 according to the chart says its from 68-75, but I couldn't find any info for the number on the passenger side mine starts with a number not a letter ( 3 225 4506 )any Idea's on this number or am I not seeing it right?

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1984 d150 super 6
1979 aspen super 6

3: Model year 1973
225: Self explanatory
4506: November 28, 1973...way too late to be an original engine in a 1973 car; could've been a warranty replacement.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks for the info Dan That helps some.

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1984 d150 super 6
1979 aspen super 6