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I think the formula is torque x rpm /5252 = HP. Or HP / rpm x 5252, which is why the formulas always cross at 5252. Others here have said it, if you make more HP, you will make more torque at that particular RPM, it may or may not change the HP you are making at the peak torque RPM, which would affect your peak torque number. In plainer language, trading low RPM HP for high RPM horsepower will typically lower peak torque, but you'd need to chart it to be sure. This is why you'll often find a Harley making 65 hp at 4K has higher torque than a 600cc sportbike making 100 hp at 11K (about 85 vs. 48 ft. lbs).
 
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