5.1 gears, anyone?

im looking to change the 3.55 in my rear, to something wild,
i have an option of a 5.1 richmond, and im worried that as its a 1/8th mile gear ratio, how it would work real time on a 1/4 strip

anyone have experience of real time on this, i know by the calculators im up in the revs, but...... i would like real advice.
oh, and im on 26.2'' hoosiers