How much horsepower does a 2010 Chevy 5.3 engine have?

The horsepower of a 2010 Chevy 5.3L engine varied depending on the specific vehicle and configuration. It generally ranged from 310 to 320 horsepower. To know the exact horsepower for a particular 2010 Chevy with a 5.3L engine, you'd need to check the vehicle's specifications or the engine's sticker.