427 Engine Suffix Codes

Please help identify this engine code suffix 427 Engine identify suffix code please help corvetteforum reply I have a 427 big block motor casting numberwith heads number 3931063

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1967 327 engine code help Block casting big 427 number motor chevy chevrolet specs 396 1969 heads size tell nnn horse nnnn me Code gm engine suffix cant find codes

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Please help identify this engine code suffix 427 .