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3258 · 12-17-2009, 02:29 PM

It seems like everybody uses a throttle stop in the form of restricting air flow into the intake manifold in the .90 classes to kill ET.

I was looking at the NHRA rule book, and I did not see anything that prohibited other forms of slowing the car down, or that said that airflow restriction is the only acceptable method of killing E.T. Can somebody set me straight on what is, and is not acceptable for super class racing? Maybe I am not looking in the right part of the book.

12-17-2009, 02:29 PM	#1
3258 Junior Member Join Date: Dec 2009 Posts: 23 Likes: 0 Liked 0 Times in 0 Posts	Super Class rule clarification It seems like everybody uses a throttle stop in the form of restricting air flow into the intake manifold in the .90 classes to kill ET. I was looking at the NHRA rule book, and I did not see anything that prohibited other forms of slowing the car down, or that said that airflow restriction is the only acceptable method of killing E.T. Can somebody set me straight on what is, and is not acceptable for super class racing? Maybe I am not looking in the right part of the book.