Ford rates the Mustang Dark Horse at 500 horsepower and 418 lb-ft of torque at the crank. That’s the figure on the spec sheet, but crank horsepower is measured at the engine, before drivetrain losses to friction. What actually matters to the person behind the wheel is wheel horsepower, and that’s where things usually get interesting. Based on typical drivetrain loss figures, most people expected the Dark Horse to land somewhere around 440 wheel horsepower. A reasonable assumption, and one that turned out to be only sort of right. Because the figures depend entirely on who was doing the measuring.
Ford
The Number on the Spec Sheet Isn’t the Whole StoryRoad and Track took the same Dark Horse to four different chassis dynos across Southern California, keeping everything e …
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Author: Simran Rastogi
