gearing vs mpg

just doesn't run real smooth, its real choppy and doesn't really have any power below that rpm. with 3.91 gear and the 9 1/2 dynamic converter the car was great on the street. the 3.55 gears were ok but you could tell the difference when pulling away from a light. the 2.94 would have been fine on the highway because the rpm would have been fine. but around town with that cam with 2.94's it would have been miserable to drive.