As the result of runs under the Automatic Horsepower Factoring System (AHFS) 1.20-second under policy at the NHRA Summer Nationals event, the following change has been made.
The horsepower rating for 2008 Ford Mustang Cobra Jet, entries with the 330 cubic inch engine and a factory rating of 425 currently rated at 456, has been increased by fifteen horsepower, to 471 horsepower; for Super Stock Eliminator.
NHRA's 2014 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 June 2, 2014.