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Old 04-12-2011, 05:59 PM   #12
BigBlocksRule
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Join Date: Jun 2008
Location: Lubbock, TX
Posts: 2,047
Re: vortec heads on a carb motor?

Yeah, it's very rough, not conducive to good flow at all. A good performance 3-angle valve job will pick up at least 10cfm and a few ponies. The factory valve job is almost square, performance is a lot more rounded/radiused.
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