470 hp 370z greddy tt finished!!!

billydsz

Well there's handling it, and then there's the question of motor life. I would imagine you are dramatically reducing the expected mileage to a rebuild.

As you increase the stress on mechanical components, you reduce their fatigue life dramatically. So highly stressed parts are going to fail alot sooner. If you keep the stress level low enough, those same components may last for an infinite amount of time. So when Nissan engineers design these components, they are shooting for x number of cycles to failure (maybe 300,000 miles at an average rpm of 3000 as a guess) at about 270hp max to the wheels. So if you double the max HP, you probably decrease cycles to failure at least 5-10 fold maybe more is my guess. But you'd have to know the actual increase in stress and the material types of each component to know for sure.