Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - any idea?? casting # 3978044 sbc
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Old 01-22-2006, 06:47 AM
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I too cannot find anything on this number...? Are you sure its correct...? Can tell you the 397 series of blocks were early 70`s... Do a bore measurement (just lay a ruler across the center of the bore) and give a rough diameter which may help...?
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