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Old 12-24-2023, 11:26 AM   #1
Charles Stewart
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Default 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).

Last edited by Charles Stewart; 12-24-2023 at 11:42 AM.
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Old 12-27-2023, 09:53 PM   #2
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Default 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.
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Old 12-28-2023, 10:50 AM   #3
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Default 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
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Old 01-05-2024, 11:29 AM   #4
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Default Re: New class in competition category for 4 cylinders engine

Are the Indexes posted for L/D and L/DA? Thanks.
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Old 01-05-2024, 03:14 PM   #5
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Default Re: New class in competition category for 4 cylinders engine

No, still waiting for them to be published.

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Old 01-17-2024, 02:41 PM   #6
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Default 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)
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