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    Upgrading a 2 barrel Rochester to a 4 barrel

    I have a 3 litre GM OMC with a 2 barrel Rochester Carborator and I am looking to find out if anyone has converted their engine to a 4 barrel Carborator in order to increase horsepower. Any thoughts or suggestions ???? I was thinking of a 4 barrel of approx. 490 CFM for this 180 cubic inch...
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