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10-01-2011, 04:08 PM
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casting number help
well I'm new to this but I got my engine today the casting # block is 3970010 I found out a little about the block on the net but the heads # 3998991 and I can't seem to find anything on them if they are good head or not the owner said he Dino the engine at 400 hp but now after buying it I ran the numbers and don't think he is tell the truth but then again I got the engine for 150 $ so I think I can still make something out of it if anyone knows if them heads are good or not plz let me know thanks very much Vince
ps sorry its a sbc 350 
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10-01-2011, 04:37 PM
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Head # info. 3998991....72-73...307/350......75cc chambers .
Cole
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