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Is 280 main's to big?


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Customer brought me an 01 shee. There is 120psi compression with a ARA racing head, dome size unknown. fmf riva's w/ power core 2's. Stock box w/ lid and Single K&N. Those are the only mods with stock ports, crank & pistons. Stock carbs have 280 main's. Is that enough mods to go that much higher in jetting?

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