How much horse power 6.0 litter Chevy 2003?

The horsepower of a 2003 Chevy 6.0L engine varies depending on the specific model and trim level of the vehicle. There's no single answer. However, it generally ranged from around 300 to 360 horsepower. You'll need to consult your vehicle's owner's manual or a reliable automotive resource like Edmunds or Kelley Blue Book to find the exact horsepower for your specific 2003 Chevy with a 6.0L engine.