The Ford Barra 4.0 ... though it's the later turbo beasts that are among the more powerful inline-6 engines every gearhead wants under their hood. Oh, and there is a Barra V8, but no one talks ...

Ford's twin-turbo 2.7-liter V-6 has been around almost as long as Good & Plenty (okay, give or take 120 years). Introduced for the F-150 in 2014, the turbo-six was a bit of an outlier as it was ...