I am kinda curious why you would build for torque, assuming a race or even a pleasure motor. If you look at all the torque and horse power figures, torque on a decent motor is always within about 10% of HP. When you get like a nail head Buick that makes 350 HP and 450 pounds of torque, or a diesel that makes 300 hp and 600 ft pounds, well that's either a failure to rev or something else wrong.
I have heard guys talk and say it’s the torque that moves the car. Well, would you want 10,000 pounds of torque at 5 RPM? I don't think so, it wouldn't get you anywhere. I'd like to hear other opinions on this, but if it’s a race motor, you want power, don't you? That equates to RPM's and torque put together. Build for horse power and the torque will come.