What tires are on it now? If they are shorter than that you will have an even slower Et. I went from 26x10.50's to 28x12.50's and you'd be surprised how much it affects your car.
What does redline of the cam mean? Redline of the engine maybe, but not cam. Unless you had it on a dyno? Have you? Do you even know where it makes power or are you just going by the goofy cam specs? I.e. 2500-6500 powerband?
My car makes peak HP at 5600RPM. Run it through the traps in 3rd vs. overdrive at 6200 and it goes .5 second faster ET.