New class in competition category for 4 cylinders engine
 

Change with the creation of the new L/D and L/DA class for the 4 cylinders 4 valves at 7,50 pounds, 850 pound minimum weight
(F/D and F/DA 4 cylinders, 2 valves engine only, 7,00 pounds per cu.in. 850 pound minimum weight. That part of rule staying the same).

Re: New class in competition category for 4 cylinders engine
 

Is this something that is actually happening or something you would like to see? I think it is a great idea. I have been hoping they would add classes for more modern 4 valve OHC engines. Thinking it may get some of the import, NMCA, etc, racers to compete.

Re: New class in competition category for 4 cylinders engine
 

You will find here the link in the 2024 rulebook amendments.
https://www.nhraracer.com/Files/Tech...Amendments.pdf

Re: New class in competition category for 4 cylinders engine
 

Are the Indexes posted for L/D and L/DA? Thanks.

Re: New class in competition category for 4 cylinders engine
 

No, still waiting for them to be published.

Brian

Re: New class in competition category for 4 cylinders engine
 

Index are: 8,69 for L/D and 8,85 for L/DA.
(Info from Pat Cvengros NHRA Pacific Division Tech. Director)