As the result of runs under the Automatic Horsepower Factoring System (AHFS) 1.20-second under policy at the NHRA FOUR-WIDE event, the following changes have been made.

The horsepower rating for 68-69 Chevrolet Camaro, Nova, entries with the 396 cubic inch engine and a factory rating of 375 currently rated at 399, has been increased by thirteen horsepower, to 412 horsepower; for Stock Eliminator.

The horsepower rating for 93-98 GM Camaro, Firebird, entries with the 350 cubic inch engine and a factory rating of 275-285 currently rated at 346, has been increased by twelve horsepower, to 358 horsepower; for Stock Eliminator.

NHRA's 2015 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 March 31, 2015.