The Modified Tractor (MOD) class is an engineer’s dream, as the goal is to get four Hemi’s, three Turbines, or Allison Aircraft Engines to sing in harmony, in a pursuit of putting the power to the track. Tipping the scales at 7,400 lbs, the competitors in this class must use every ounce they have to their advantage. Fans from across the country, pack the stands for a chance to watch these machines throw dirt with the power of over 10,000 horses.