Take a look at the 2013 SRT Viper GTS on the dyno!
The first copies of the 2013 SRT Viper to reach consumers
may not arrive until February as the Chrysler Group works to make sure that
there are no “bugs” in the first batch of production supercars but thanks to
the folks at Edmunds.com, we get a look at the 2013 SRT Viper GTS on the dyno
for the first time. The results are
right about where we would expect the new Viper to be in terms of wheel
horsepower with an output of 558 horsepower and 528lb-ft of torque but more
importantly – these figures put the Viper slightly ahead of the Corvette ZR1 in
terms of the amount of power available at the wheels.
The 2013 SRT Viper GTS tested by Edmunds is rated as having
640 horsepower and 600lb-ft of torque but that number is at the transmission –
not at the wheels. Due to the fact that
the power has to travel from the engine through the transmission, down the
driveshaft, through the rear differential and along the rear axles en route to
the asphalt, there is a given amount of power that is lost and that figure is
referred to as drivetrain loss. In a
rear wheel drive car, we generally assume a drivetrain loss of 12-15% so in
theory, the 640 horsepower Viper should make between 544 and 563 after that unavoidable
power loss. The figure of 558 horsepower
is in the middle of that range and 558 wheel horsepower from 640 horsepower at
the crankshaft gives the Viper a drivetrain loss rate of just 12.5%.
I looked around the internet a bit and found that
CorvetteForum.com, those who have dyno tested their stock Corvette ZR1 have
seen wheel horsepower numbers in the range of 540-550 horsepower so while it is
only a small margin – the 2013 Viper seems to have a slight advantage in how
much power it puts to the road. Also,
based on the fact that the Corvette ZR1 offers 638 horsepower at the
crankshaft, it seems as though the Viper is more efficient in terms of putting
its available power to the road.
We are sure to see more test results like this for the 2013
SRT Viper – especially once the privately owned models begin reaching the hands
of owners, racers and performance shops around the country as soon as next
month. The battle with the Corvette ZR1
is going to be a tight one and according to Chrysler, fitting the new Viper
with the right driver will allow the new Mopar supercar to best the top of the
Check out the video below of the 2013 SRT Viper GTS on the
dyno from the folks at Edmunds and Click here to talk about the 2013 SRT Viper in the Viper section here on DodgeForum.com!