Originally Posted by codprawn
You can work it out easily enough
torque = 5252 x horsepower / rpm
Whilst you can indeed calculate the torque from rpm & power, it only gives you a torque figure based on the peak power rpm, and gives no idea of the max torque, which will of course be quite a bit higher than that at max power point, and also gives no idea of the 'torque curve' at all, which is all important. For that you need a proper graph derived from dyno testing.