torque is directly rated to the amount of air/fuel you can get into an engine.

the opel vectra race car (yes it is a real car, not just in GT3) spins 13,000 rpm, but it is only 3.0 liters n/a. produces close to 600hp, but still only makes 250 ft/lb or torque. of course, the torque at the wheels can be increased due to extremely low gearing that the high rev limit has. that is what makes it compete against BMW V8's.