
The 2010 Dodge Viper SRT10 ACR-X is powered by the SRT-developed 8.4-liter V10, equipped with factory headers and a low-restriction exhaust system, that produces 640 horsepower. The suspension also is tuned and upgraded specifically for on-track usage, while the weight is lightened by a full 160 pounds to take on even the most challenging road course. Additional aerodynamic upgrades improve downforce, while enhancing stability and significantly improving...

At the heart of the 2010 Dodge Viper SRT10 remains the venerable 8.4-liter (510 cu. in.) V-10 engine that produces 600 (450 kW) horsepower and 560 lb.-ft. (760 Nm) of torque. Benchmark performance numbers, including 0-60 mph in less than 4 seconds, quarter-mile time in the mid 11-second range and 0-100-0 mph in 11 seconds flat, and a top speed of 202 mph, continue to prove how the serious, race-inspired, street-legal two-seater performs without apology....

Chris Winkler, an SRT vehicle dynamics engineer piloted a black and red 2010 Dodge Viper SRT10 ACR (American Club Racer) to a lap record of 1:33.915 as recorded by Motech in-vehicle data recorder (1:33.944 – as unofficially recorded by trackside clock) around the 2.238-mile, 11-turn course, shattering the previous lap record by more than 1.1 seconds. New for the 2010 model year is a shorter fifth gear ratio (changing from 0.74 to 0.80) for improved...