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We don't know why Karl Geiger is fascinated with American performance cars, but we're sure glad he is. The 2010 Shelby GT500 is the latest muscle car to go under the German tuner's knife, and the results are nothing less than impressive. Thanks to a larger Whipple supercharger, larger throttle valves, upgraded fuel injection system and ported cylinder heads, the 5.4-liter V8 produces an incredible 799 horsepower and 697 pound-feet torque. Geiger claims a top speed of 220 miles per hour, but with the Mustang's aerodynamics we would peg that number as more theoretical than anything.

To cope with extra horsepower, Gieger has also fitted the GT500 with a three-disc carbon clutch and reinforced the six-speed transmission. Handling improvements have been made through a "racing chassis" (we're not sure what that means), a panhard rod with polyurethane bushings and adjustable lower control arms. Finally massive 15-inch, six-piston front brakes help haul the Shelby down from inevitable high speed runs. You can see the full press release after the jump, and high-res images courtesy of Gieger can be found in the gallery below.















2010 Geiger Cars Shelby Gt500 — Autoblog