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Old 12-03-2016, 01:10 AM   #23
moggey01
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Join Date: Apr 2011
Location: Houston Texas
Posts: 315
Re: Best headand cam combo for 421 SBC

Sorry when I saw this post originally I did not see the power you were looking for. 550 h.p. will not require a whole lot of cylinder head on 421 inches. A 220cc casting will be more than enough to get you there.
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