* Design: The engine's architecture (V8, V6, inline, etc.), the specific components used (camshafts, pistons, etc.), and the overall engineering all significantly impact power output.
* Aspiration: Naturally aspirated engines (using only atmospheric air) produce less horsepower than turbocharged or supercharged engines (which force more air into the cylinders).
* Tuning: The engine's computer programming (ECU) plays a huge role. A performance-tuned engine will produce more horsepower than a stock engine of the same displacement.
A 5.0-liter engine could produce anywhere from under 200 horsepower to over 700 horsepower depending on these factors. You need to specify the *make, model, and year* of the vehicle (or the specific engine) to get a precise horsepower figure.
