Dan, what would be a good rear gear ratio for this trans and 340 B-1 headed engine with a comp cam 550 lift 306 duration. Mostly street with some racing.
Close ratio 4-speed likes more gear in the back, but it also depends on the tire height and what RPM you can live with on the street. This is a good tool to play around with picking tire size and rear ratio. Calculate GEAR, RPM, MPH, TIRE DIAMETER