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Old 03-15-2007, 07:34 AM   #8
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Drives: Chevy 1500 5.7L Vortec
Join Date: Jan 2007
Location: FL, Go gators!
Posts: 172
They might be like bump shifters. After you get so much HP out of an engine you are wasting alot of it in a drag because it takes time for you to shift gears manually. But you can shift at more opportune points with manual. So it could just be a speedy manual.
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