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RJ Sledge · 09-06-2019, 06:19 PM

If the head in question casting number is listed in the blue print specs it is a legal head to run.
Just because there is no runner volumes published doesn’t matter. It is not racers responsibility to publish them. It’s NHRA job.
They gave you a list of legal heads to run and it’s there job to publish specs on head.

RJ

09-06-2019, 06:19 PM	#3
RJ Sledge Senior Member Join Date: Jun 2007 Posts: 783 Likes: 503 Liked 288 Times in 90 Posts	Re: Accepted S/SS Cylinder Head Volumes If the head in question casting number is listed in the blue print specs it is a legal head to run. Just because there is no runner volumes published doesn’t matter. It is not racers responsibility to publish them. It’s NHRA job. They gave you a list of legal heads to run and it’s there job to publish specs on head. RJ