Trying to get Power out of a 225

Keep in mind when You pick a torque converter they are advertised w/an "avg" stall range, read smallblock V8, so say a 350/360 inputs 50% more Tq than the little /6.
You've got to pick around 1K above to get what you want, more if the cam is real big..........so think 4200 rating & up.