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How many pulls did he make and what changes did he do between pulls?????? Change cam timing? Ign curve? Headers? carbs or jetting?? Intake manifolds??

He made timing changes it is at 40 degrees, and jetting are 83 front and 94 back , made 5 pulls on it he got a great name on builds all he ever done , my buddy got one like mind at 10.8 to 1 an he dynoed at wheels 620 hp , an I have Howard's cam 640 lift. Diffent guy done my buddy's build he got same lift cam but is a lunati