" The new Porsche 991 GT3 is more technologically advanced
than the 997 GT3 RS 4.0. The 991 GT3 ditches the GT1 based flat-6 for a newer direct injected unit, adds a PDK dual clutch transmission, and also features rear wheel steering. The technology update has come with quite a price
but is the new the GT3 a better performance car than the top dog 997 GT3 RS 4.0? The previous generation car is the more powerful one quoted at 500 horsepower but it is severely underrated
The 991 3.8 liter flat-6 is smaller than the 997 GT3 RS 4.0 liter mill but it revs higher to 9000 rpm. Can the higher redline and quicker shifting PDK gearbox help it overcome its 25 horsepower (on paper) disadvantage? The 991 GT3 not only has less power but it also is the heavier car by 110 pounds.
Well, the new 991 GT3 is not only faster in a straight line it is significantly quicker around the roadcourse. German publication Auto Bild tested both cars on the Sachsenring and the 991 GT3 crushed the 997 GTR RS 4.0. Here are the laptimes:
991 GT3: 1:32.97
997 GT RS 4.0: 1:34.53 min
Just over 1.5 seconds a lap is a huge improvement. The new car clearly handles better but what about the acceleration figures? The 991 GT3 is the superior performer here as well with an 11.37 second 1/4 mile sprint compared to the 997 GT3 RS 4.0 11.75. Acceleration from 0-200 kph favors the 991 GT3 which accomplishes the task in 11.2 seconds to the 997 GT3 RS 4.0 11.8 seconds. "