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I'm building a 383 with a forged bottom end, 10-1 compression, lunati roller with 573/585 lift, 1.6 scorpion roller rockers and a victor intake I've been told that a 750 cfm was max for a small block on the street but don't know about high rpm, I've also run 1/2" fuel line with holley blue pump. Thinking of a 850 cfm mighty demon, is that to much?
 
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