The horsepower output for the 2010 Ford F-150 with the 5.4L 3-valve V8 engine varied depending on the specific trim level and configuration. However, it generally produced around 310 horsepower.
Here's a breakdown of some common configurations:
* Regular Cab: 310 horsepower
* SuperCab: 310 horsepower
* Crew Cab: 310 horsepower
* King Ranch: 310 horsepower
* Harley-Davidson: 310 horsepower
Note: These are approximate figures. It's best to refer to the owner's manual or a reliable source like the Ford website for the exact horsepower rating of your specific F-150 model.