11/05/2018
As the result of runs under the Automatic Horsepower Factoring System (AHFS) 1.20-second under policy at the NHRA division 7 event, the following changes have been made.
The horsepower rating for 16-18 Chevrolet Copo, entries with the 350 cubic inch engine and a factory rating of 580 currently rated at 580, has been increased by thirty seven horsepower, to 617 horsepower; for Stock Eliminator.
NHRA's 2018 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 Nov. 05, 2018.