2008 Dodge Viper ACR on the Dyno

Is the Dodge Viper trying to pull a Nissan GT-R?

The 2008 Viper ACR was recently put on the Dyno for a little testing. According to the results, there was 546 hp and 510 lbs-ft of torque to the rear wheels. With a 15 percent driveline loss this represents an engine that puts out 642 hp and 600 lbs-ft at the crank. Dodge’s claimed rating for the Viper ACR is only 600 hp. So either someone had a little fun with the engine or the good ’ol days of manufacturers underrating horsepower is back!