with your current rear gears you can probably run the big cams suggested,(torque motors?- thats a term usually denoting good torque at a lower rpm) but without those ratios a good mod would be to remove your doors so you can help push it away from the stop lights. Inches have a more beneficial effect on torque than anything on a natural breathing motor, and 250 aint a lot.

I've run 2.54 low B/W T-10s with stock cam 194 and 230s and feel that they kept the motor too strung out, but allowed fast shifting due to closer ratio spacing, whereas the std 2.94 three speed allowed the motors to come back down to a better rpm level at every (though slow) shift. A radical cam will work better closer ratio'd tranny and vice-versa.