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NHRA U.S. Nationals Stock and Super Stock Runs Excluded From Automatic Horsepower Factoring System

NHRA has announced that the Automatic Horsepower Factoring system will not be used during this year’s NHRA U.S. Nationals. As a result, runs made by Stock and Super Stock competitors at any time during the event will not count towards class averages, nor will they be used to trigger index or horsepower adjustments.


This decision was reached as the result of competitor requests. During those discussions, a significant number of competitors expressed the desire to show the full performance potential of their cars during NHRA’s most prestigious event without fear of future horsepower and/or index penalties.


The AFHS will remain in effect for all other NHRA Mission Foods National, Lucas Oil Series divisional events, and JEGS SportsNationals.