Last month we built a mild street engine using a factory Chrysler 383 block, crankshaft, rods, and cylinder heads combined with some aftermarket goodies from Comp Cams and Summit Racing Equipment, and ...

The 2007 Subaru Impreza STi delivers a fierce EJ25 turbo soundtrack on the dyno with 524HP, equal length headers, and a ...

Ford’s Godzilla 7.3-liter V8 is a potent performance engine-swap option. Brian Wolfe fortified one for boost, and it belted ...

According to RM, this dyno was initially purchased from the Ferrari factory in Maranello by Belgian dealer Jacques Swaters in 1953. The setup had previously been used by the automaker for testing and ...

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 ...

“With no changes, it’s no surprise that the 2025 Yamaha YZ250F engine delivers on all expectations,” test rider Allan Brown said. “The Tuning Fork brand’s advancements over the past few years have ...

We’ve all been there, right? There’s a modified sports car on Bring a Trailer. It’s supercharged, lowered, and on the right wheels, plus there are the words “dyno verified” in the listing. That gets a ...

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.

It didn’t take long after getting our hands on Big Red’s largest-displacement dual sport motorcycle before we strapped it to our in-house Dynojet 250i rear-wheel dynamometer to find out how much ...