German tuner Geiger Cars’ boss Karl Geiger seems to be obsessed with American Cars – a rare combination indeed. Nonetheless, Geiger’s love for American performance cars has gave many of us something to be excited about. Following the 701-hp Ford GT, 592-hp Corvette Z06, 890-hp Corvette Z06 and the 568-hp Camaro SS – Geiger is back with a modified version of the Mustang Shelby GT500.
Geiger’s engineers worked on the already powerful V8 of the Shelby GT500 but added some upgrades including a 3.3L compressor, a 1.6 bar supercharging pressure, a modified injection system, larger throttle valves, a 100 millimeter air flow meter and machined cylinder heads. All that allows for an output of 799-hp with a peak torque of 697 lb-ft.
Geiger is so confident and proud of what they’ve created that in their press release they say: “Perhaps this Mustang Shelby version would also put the fear of God into the US racing legend Carroll Shelby!”
What do you think Shelby?
GeigerCars 2010 Ford Shelby GT500:
Alongside the Ford Mustang V6 and its V8 brother Mustang GT there is the crowning glory of the series the wild Mustang Shelby GT500, which is equipped ex factory with 540 PS, an aggressive body and traditional double stripe paintwork. Anyone who remembers the American racing legend Carroll Shelby will be able to instantly imagine how uncompromising and purist the Shelby GT500 factory settings already are. The US car specialist Karl Geiger from Munich has now got its hands on this vehicle and take a look at how the upright Cobra has been transformed into an almost untameable monster!
810 PS, 945 Nm engine torque
As usual the engineers at GeigerCars.de from Munich operated on the open V8 heart of the American muscle car and in the process left no stone unturned. For more pressure they donated a 3.3 litre compressor to the 5.4 litre aluminium engine block which with its 1.6 bar supercharging pressure provides real fire in the forged crank drive. Larger throttle valves, a modified injection system, a 100 millimetre air flow meter and machined cylinder heads also guarantee that the inner organs are fine tuned. Additional coolers for charge air, coolant and engine oil ensure that the eight cylinder can always work at the perfect temperature range despite massively increased power.
Thanks to the massive changes the Geiger Mustang Shelby GT now generates a legendary 810 PS at 6,700 rpm, whereas the maximum engine torque of 945 Nm at approx. 4,300 rpm pulls on the increased differentials. Of course with so much engine torque the transmission also had to be reinforced and in the same step its 5th and 6th gears were shortened. A 3 disc carbon clutch produces smooth power transmission. A special manifold with racing catalytic converters and customised sport exhaust guarantee that exhaust gases are disposed of properly according to type.
High end chassis engineering
So that so much power can also be transformed in acceleration, GeigerCars.de fitted the Shelby with a special racing chassis as well as a Panhard rod made from chrome-moly steel including polyurethane bushes on the ends to balance the axial offset and new reinforced and adjustable trailing arms for improved rear axle directional stability. For the all-important contact to the asphalt surface four classic OZ alloy wheels in 8.5 and 10×20 inch guarantee adequate grip thanks to Michelin high performance tyres in 245/35ZR20 and 285/30ZR20. The upright Cobra is slowed down using 6 piston high performance brakes on the front axle with 380 millimetre large drilled or optionally slotted brake discs.
Perhaps this Mustang Shelby version would also put the fear of God into the US racing legend Carroll Shelby!
– By: Kap Shah