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2020 Shelby GT500 Dyno Test Shows 705 HP At The Wheels

motor1 logo motor1 12/5/2019 Christopher Smith

Is the supercharged 'Stang packing more power than advertised?

The 2020 Ford Mustang Shelby GT500 produces 760 horsepower, or does it? Now that production cars are finally getting into the hands of buyers, we have what appears to be the first private-owner GT500 dyno pull, or at least, the first one on camera. The clip comes from Speed Phenom on YouTube, and there’s no other way to say it – with 705 horsepower at the wheels, the run suggests the GT500 is underrated by a wide margin. However, let’s not jump to conclusions just yet.


A 65-hp difference at the crank – while significant – isn't extreme. A dyno that reads a bit high combined with a DCT robbing a bit less engine power could cut that number in half. And honestly, we'd have no trouble at all believing Ford's supercharged 5.2-liter V8 makes 30 more hp than advertised.

a car parked on the side of a building: 2020 Shelby GT500 Dyno © 2020 Shelby GT500 Dyno

We've reached out to Ford and asked several questions about power ratings and DCT efficiency for the GT500. Representatives are looking into it, and we'll update this article once we hear back.

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