The last time we put the Jeep Grand Cherokee SRT8 up against the mighty Porsche Cayenne, it wasn't exactly a fair fight. The Porsche was packing twin turbos on top of its 4.8-liter V8 engine, while the Jeep was forced to get by on its 6.4 liters of displacement alone.
OK, so it's hard to cry any tears for the Jeep, but this time around the Porsche in question has a little less help. Instead of the mighty Cayenne Turbo, we used the latest Cayenne GTS, a lightly modified version of the standard V8 model. There are no turbochargers to help this time, only a few minor tweaks that bump its output to 420 horsepower and 380 pound-feet of torque.
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