Remember the 2010 Ford Harley-Davidson F-150 revealed last week in Chicago? We really should have popped the hood. Turns out the engine was a "BOSS" 6.2-liter V8 engine, and not the expected 5.4-liter V8.

Luckily, the boys over at Autoblog got a shot of the engine. Although even they didn't realize it was the 6.2-liter under the hood until Mike Levine over at PickupTrucks.com noticed it last night. Remember, this truck's only supposed to get a 5.4-liter V8.

Kudos to Levine for noticing Ford's pants down. Similar tip o' the hat to Drew Phillips at Autoblog for taking the shot.

[PickupTrucks, Autoblog]