What is the displacement of a car with 300 horsepower?

You can't do that. If a turbo supercharger is added to the modified car, the whole set of intake and exhaust horsepower will be doubled immediately, and the horsepower can be adjusted, which is balanced and restricted with the torque. The same engine horsepower increases, and the torque needs higher speed to explode, and vice versa. If the average civilian car has 300 horsepower, the displacement is at least 3.5. If modified, it can reach about 500 horsepower, but it will shorten the life of the engine. Every car is different, and cars are different from off-road vehicles, gasoline vehicles and diesel vehicles. No one can make cross-country like a coupe. ) and after the engine is changed, the suspension must be adjusted or even replaced, otherwise it will be too dangerous to run.