"cheater slicks"

Let me asking this with a higher gear for example I have 2.76 now to get more "gear" out of the hole I need a short tire correct?? So virtually using a taller tire is gonna hurt me on the bottom end?
I don't think they make a small enough tire to help a 2.76 geared car. lol a good street gear would be 3.55 0r 3.73.