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Old 12-25-2013, 11:11 PM   #4
Adger Smith
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Join Date: Dec 2001
Location: Texarkana Ark/TX
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Default Re: Rocker Arm Ratio

Dave,
The specs you see in the NHRA Blueprint guide list it as "Valve Lift".
Valve lift is measured at the valve. I have never seen a lobe lift listing in the NHRA Blueprint specs that I usually deal with. That is not to say they(lobe lift specs) may be there for some XXX engine that is or could be under the watchful eye of Billy Nees. (wink,wink)
Since you are new to this I would suggest you visit with a NHRA Tech inspector and ask questions while watching what goes on. It might help you and keep you from a costly mistake or two. See it never hurts or is bad to ask questions.
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