The 19-year-old Whitt ran a lap of 173.933 mph to surpass the mark of 170.845 mph Timothy Peters set in leading qualifying at last year's Too Tough To Tame 200.
Kahne was second at 173.613 mph and will start alongside Whitt in Saturday evening's race.
Last year's Darlington winner Todd Bodine qualified 12th.
Copyright 2011 by The Associated Press
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