Four California dynos tested the same Mustang Dark Horse and couldn't agree on what Ford's 500 hp claim means at the wheels ...

"Dyno verified" can mean different things, depending on which dynamometer that car was rolling atop.

What happens when you shoehorn a Godzilla engine in a 1986 model year C10? Enter Jody Gunter from Gunter Specialty, the proud owner of a superb-looking Silverado with a lot more oomph than expected.

We suspect that for just about anyone firing up a new engine on a dyno for the first time, the anticipation is something akin to buying a lottery ticket—you're not sure what to expect, but hope for ...