How did they come up with this

leemccarthyn

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Mar 31, 2019
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mbx
my engine block cast is 3970010 which is 350 ci but my block stamp in front shows VC305CCC which is 307
block is 1968-1988 the front stamp shows flint march 30 1975 I want to know what components GM used to get 307 with this block????
 
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