Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - my 671 isn't making boost?
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Old 04-24-2008, 05:19 PM
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carsavvycook carsavvycook is offline
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Twin 600's are too much for a 350CID, or 383 for that matter. You are most likely over carb'ed, and running too much air/fuel for the street. Switch to twin 500's to cut down on the volume of air and rejet to 107's, with 73-42(part #1455) metering rods with 8"(silver) step-up springs. This combo gets a full boost of 20 earlier with a 1.1 blower drive.

Last edited by carsavvycook; 04-24-2008 at 05:26 PM. Reason: additional wording
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