11/01/2016
As the result of runs under the Automatic Horsepower Factoring System (AHFS) 1.20-second under policy at the Toyota NHRA Nationals event, the following changes have been made.
The horsepower rating for 13-15 Chevrolet COPO, entries with the 350 cubic inch engine and a factory rating of 305 currently rated at 355, has been increased by twelve horsepower, to 367 horsepower; for Stock Eliminator.
The horsepower rating for 2010 Ford Cobra Jet, entries with the 330 cubic inch engine and a factory rating of 435 currently rated at 488, has been increased by sixteen horsepower, to 504 horsepower; for Super Stock Eliminator.
NHRA's 2016 Automatic Horsepower Factoring System outlines that any run of 1.20-seconds or more under the index will receive an immediate index decrease or horsepower increase. These changes are effective November 01, 2016.