The front end of the new 2013 SRT Viper GTS-R

A closer look at the 2013 SRT Viper GTS-R race car

We have known since the debut of the new 2013 SRT Viper that there would be a Viper GTS-R that would put the supercar back into factory backed LeMans racing and while information was short at the New York Auto Show debut – more information has quietly been posted on the DriveSRT website giving us a good look at what the SRT team to get the new Viper into the 2012 American LeMans Series.

While most race models in racing classes like the GT class of the American LeMans Series are higher performance versions of production road cars, the 2013 SRT Viper GTS-R is actually tuned and – technically – lower performance than the 2013 SRT Viper that will arrive in showrooms later this summer. The 2013 SRT Viper and Viper GTS that will appear on American roads this summer are powered by an 8.4L V10 that churns out 640 horsepower. Unfortunately for the Viper race teams, the ALMS GT Class has a limit of 5.5 liters and 500 horsepower so the engineers behind the GTS-R from Chrysler Street and Racing Technology group had to meet with ALMS officials to find out what they had to do in order for their V10 powered supercar to be legal to return to the ALMS. The result was cutting the engine from 8.4 to “just” 8.0 liters and adding a sort of restriction system to limit the power output to right around 500 horsepower. While the initial Viper GTS-R race cars that dominated the GT Super Class in 1999 and 2000 had 8.0L V10 engines so they did not have to cut engine volume – even those old school race Vipers had to keep power at 500 with the use of unique race-only components.

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