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Old 07-02-2010, 05:59 PM   #1
Ed Fernandez
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Talking Re: Why did nhra change the cam and valve spring rule in 1985?

This topic is very amusing to me.I think that the standard shold be 130#/350# as my springs meet the parameters.Does this mean that all those intimidating ABC cars are
going to be slower bearing down on little old me?
I think if it can be proven that the seat pressure is higher than 130#/350# from the factory then that should be the standard for that combo.
Bill,nice comeback.
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Old 07-02-2010, 06:16 PM   #2
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Default Re: Why did nhra change the cam and valve spring rule in 1985?

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Originally Posted by Ed Fernandez View Post
This topic is very amusing to me.I think that the standard shold be 130#/350# as my springs meet the parameters.Does this mean that all those intimidating ABC cars are
going to be slower bearing down on little old me?
I think if it can be proven that the seat pressure is higher than 130#/350# from the factory then that should be the standard for that combo.
Bill,nice comeback.
I dont know how hard the blown Mustangs turn their combos and what kind of spring pressures they use but maybe they would only blow by you at 145 MPH instead of over 150+ MPH.......LOL.
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Old 07-02-2010, 06:24 PM   #3
Billy Nees
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Default Re: Why did nhra change the cam and valve spring rule in 1985?

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Originally Posted by X-TECH MAN View Post
I dont know how hard the blown Mustangs turn their combos and what kind of spring pressures they use but maybe they would only blow by you at 145 MPH instead of over 150+ MPH.......LOL.
OHC engines use very little valve spring pressure. They don't need it.
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