Why did nhra change the cam and valve spring rule in 1985? - CLASS RACER FORUM

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Why did nhra change the cam and valve spring rule in 1985?

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07-05-2010, 07:43 PM

#27

SSDiv6

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Re: Why did nhra change the cam and valve spring rule in 1985?

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Originally Posted by Rick Leininger Jr.

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IF you use the ceramic lifters.

Yep...in the past I have addressed the subject of valve train dynamics and camshaft lobes in the Tech section...there is a lot more on new camshaft designs that do not require the high spring pressures being used today...

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