How much is a 3.5 liter convert to horse power?

To convert engine displacement from liters to horsepower, you can't use a direct conversion, as horsepower is a measure of power output, while liters measure engine size. However, a rough estimate is that a typical gasoline engine produces about 30 to 40 horsepower per liter. Therefore, a 3.5-liter engine might produce approximately 105 to 140 horsepower, depending on various factors like engine design, fuel type, and tuning.