* Manufacturer: Different manufacturers (Ford, Chevrolet, Toyota, etc.) tune their engines differently, resulting in varying horsepower figures.
* Year of Manufacture: Even within the same manufacturer and engine displacement, horsepower can change from year to year due to design improvements or emissions regulations.
* Engine Modifications: Aftermarket modifications (exhaust, intake, tuning) can significantly increase or decrease horsepower.
A 5.0L V8 could produce anywhere from 250 horsepower to over 700 horsepower depending on these factors. To find the horsepower of a *specific* 5.0L V8 engine, you need to know the make, model, and year of the vehicle it's in.