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The carb metering the fuel is, obviously, undecided at this time, but Nelson assures us it will be a Carb Shop unit. This particular carb is representative of what Tom will test, as this particular mixer began life as a Holley 1050 Dominator, and was then put through the Carb Shop's proven performance gauntlet (in this case, their "Stage V" treatment) so everything on the carb that can be adjustable is. With so many tuning variables, the elusive killer tune up is most certainly in there somewhere, it's "simply" up to Nelson to find it. "This carb probably flows somewhere around 1,250 cfm now, and I'm thinking this is the right one for the Challenge. Testing will tell for sure, but I'm confident I can run the big carb and adjust everything around it to perform well on this engine." Considering there's only 470 inches to feed, and the redline rpm of 6,500 isn't truly high, tuning this carb to its full potential is a challenge unto itself. Nelson will also experiment with HVH Super Sucker carb spacers. View Related Article
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