07-29-2015, 05:45 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,496
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No - Holley makes a 4bbl with vacuum secondaries rated for 390 cfm I believe. Several are using them on 289 series small blocks.
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