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you will be over-carbureted,it will have poor throttle response and bog and hesitate at low speeds and won't run well until very high rpms. poor fuel economy and bad emmissions

500-600cfm for stock or mildly modified,650-750cfm for large cam and or head work, 800 cfm+ for full race applications

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2012-02-10 16:22:38
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Q: What would be the effects of installing to large of CFM carb on a SBC?
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