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Old 10-24-2014, 01:09 AM   #5
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
Re: Help deciding between 750 mech and vac on my 454

I agree with a 600 to 670 cfm carb being sufficient. Quite often guys will go with a bigger carb instead of actually tuning the correct size carb to the engine it is installed on. Sometimes the work just right out of the box, other times they need a little tuning.
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