Steve Turner, editor-in-chief that 5.0 Mustang & super Fords magazine, placed a 2013 Ford Shelby GT500 top top a dyno and also got some impressive results.

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At the push launch because that the 2013 Ford Shelby GT500 critical week in Braselton Georgia, Steve Turner, editor-in-chief of 5.0 Mustang & at sight Fords magazine, wanted to operation his own dyno check to check out just how much horsepower the brand-new muscle auto has, and was able to sneak among the car away for a fast test. Apparently also after driving among the super quick Shelby GT500‘s, he required to check out for himself if Ford’s insurance claims were true.

As we reported right here on torque News, just a month ago, Ford announced that the 2013 Ford Shelby GT500 had been officially SAE certified v 662 horsepower and also 631 lb. Ft. That torque. This to be a dramatic rise over the remarkable 650 horsepower that Ford had announced back in November of last year. This make the brand-new aluminum block 5.8-liter the most an effective production V-8 in north America. However, as reported through Mustangs Daily, those numbers may not also be specific representation that what type of horsepower the 2013 Ford Shelby GT500 is pumping out.

The 2013 Ford Shelby GT500 goes on the dyno

In in between laps in ~ the roadway Atlanta track and also making quarter mile passes at Atlanta Dragway, Turner took one of the new Shelby GT500’s and also put the car on the dyno because that a fast test. After acquiring the auto up over 6000 rpm’s Turner discovered that the 2013 Shelby GT500 was putting out 609 horsepower at the behind wheels.

But as soon as you factor in a typical 10-20 percent loss v the transmission, driveshaft, and differential, with a 15 percent loss, the super load 5.8-liter V-8 is actually creating closer to 715 speech at the flywheel. Through a much more conservative drivetrain loss of ten percent, the muscle car is pumping out more than 675 horsepower, i m sorry is still an ext than the SAE certified number.

As is typical with most auto manufacturers, castle report horsepower and torque numbers the are generated at the flywheel and not the rear wheels. So it isn’t uncommon to watch horsepower and also torque be an ext on a dyno than what the carmaker is advertising. Yet what this does display is the Ford has done an incredible task of updating whatever in the drivetrain to do the 2013 Shelby GT500 an ext powerful and efficient.

Ford upgraded ever part of the powertrain

Ford designers looked in ~ every component of the powertrain once they designed the brand-new car, beginning with a bigger and much more efficient supercharger which forces an ext air right into the 5.8-liter V-8. Following they concentrated on the internals giving the V-8 brand-new cross-drilled block and heads, an all-forged engine rotating assembly, updated camshaft profiles, and upgraded head gaskets.

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In order to mitigate friction with the drivetrain, they gave the new Shelby a new carbon fiber driveshaft, an upgraded clutch, transmission and axle. The results of every the transforms made to the 2013 Ford Shelby GT500 room truly spectacular.