Depends on the application. Street car with near stock power likes a 2800 stall. Drag race set up is way different. So many variables to consider in terms of powerband, peak torque, gearing, tire height, tranny gearing, etc. You really want to work the peak torque and thus for racing you want your stall to be in the range of where your dyno sheet says you are making peak tq. If the stall is too high then a lot of power coming from the motor wont make it to the tires.