if you were to go from a 520 final to a 539 final how many rpms would you gain is thier some sort of formula to find out?
5.39/5.20=1.036 x current rpm = new rpm at the same speed If you were turning 7000 rpms before you'd now be turning 7256
Good, quick work Czar. Simple Rule-of-Thumb? For every .1 final ratio change within the drive-train, the engine rpm will change, up or down, right at 125 rpm. -Dave-
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