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Old 02-20-2018, 06:35 PM   #44
Dwight Southerland
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Join Date: Dec 2001
Location: Arkansas - In the middle of everything.
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Default Re: Titanium Valves in SS

Quote:
Originally Posted by fredjohnston View Post
Dwight - with all due respect, there is only one method and that's to look at what it says in the NHRA classification guide, see that it says 7.65 @ 411 and to abide by it. No need for a calculator.
As I said, I have been having this conversation with a variety of people at NHRA Tech for a long time and the method/opinion has changed back and forth depending when and who you talk to. I agree that the current consensus is to use the P/W factor found in the Class Guide to determine the class, and use the power factor to multiply to find the race weight.

It has not always been that way.
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