NHRA officials announce Pro Stock electronic fuel injection system rules and requirements
The sanctioning body has named Holley as the sole provider of the components of the electronic fuel injection system.
The complete rules and requirements are available from NHRARacer.com for download.
The changes in the category will make the engines more relevant from a technology standpoint. In order to reduce and control costs for the race teams, an NHRA-controlled 10,500 Rev Limiter will be added to the fuel injection systems.
The change to EFI in the factory hot-rod category is among several changes to the category. NHRA required teams to back their racecars into the pits and leave engines uncovered beginning at the NHRA Sonoma Nationals. A rule was also created to discontinue the practice of crew members standing beside the cars to hold them in place as they begin their burnouts. It was also mandated for teams to create automobile manufacturer identification headers visible on the racecars’ windshields up to a maximum of 4.5-inches high, but not smaller than 2.125-inches.
Beginning in 2016, NHRA also will require Pro Stock teams to remove all hood scoops and reduce the length of the wheelie bars to a length specified by the NHRA Tech Department.