* Design: The engine's design (naturally aspirated, turbocharged, supercharged) significantly impacts horsepower. A turbocharged 3.6L will produce far more horsepower than a naturally aspirated one.
* Technology: Features like variable valve timing, direct injection, and the materials used all affect power output.
* Manufacturer: Different manufacturers will tune their 3.6L engines differently, resulting in varying horsepower figures.
You'll find 3.6L engines producing anywhere from roughly 200 horsepower to well over 400 horsepower, depending on these factors. To find the horsepower of a *specific* 3.6L engine, you need to know the make, model, and year of the vehicle it's in.