These Naturally Aspirated Vehicles are divided into categories by number of cylinders.

Four:  242 whp

Norma Race Car

Horsepower: 242 whp          Torque: 166 ft-lbs

Six: 293 whp

2009 Nissan 370Z

Horsepower: 293 whp          Torque: 241 ft-lbs

Eight:  740 whp

Pro Stock 1956 Chevy Truck

Horsepower: 740 whp          Torque: 661 ft-lbs

Ten:  678 whp

2008 Dodge Viper SRT-10

Horsepower: 678 whp          Torque: 779 ft-lbs

Twelve: No Record Available