I am building a 1980 camaro as a drag car. It has a high revving 355 (~7000 7800 rpm's) and Im having trouble deciding on what gear to go with. The powerband for the Cam is 4000-8000, and for the intake it is 3500-8000. and I will probably be usuing ~3500 stall.

1) does anyone know of a good gear ratio calculator?

2) What is it going to take to get a 9" rear end to work in this car

Thanks
PHIL