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Old 04-12-2014, 02:12 PM
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beemergary beemergary is offline
Ultimate Warrior
 
Join Date: Mar 2003
Posts: 1,415
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Sounds like a high idle with choke on adjustment. Don't worry about the carb size if it runs good. Run 2-750"s on my 421's and they run just fine. If you did the math, 1-750 would be too big.