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Old 04-20-2013, 07:25 PM
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Valve Spring question

I'm using a hydraulic flat tappet cam with .515 lift

I was wanting to get these valve springs, they are suppose to be good to .550 lift.
http://www.summitracing.com/parts/sum-174000

Is that enough of a safety margin with the springs?

Thanks guys.

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Old 04-20-2013, 07:39 PM
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Should be good for your application. Keep closed seat pressure around 110 lbs.
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Old 04-20-2013, 07:41 PM
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Quote:
Originally Posted by BOBCRMAN@aol.com View Post
Should be good for your application. Keep closed seat pressure around 110 lbs.
Alright, thanks.

I read about having a .060 safety margin, so does that mean with a .515 lift cam, I need springs that are good to .575 lift? I may be doing the math wrong.
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Old 04-20-2013, 07:54 PM
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Those springs have a safety margin already figured in.
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Old 04-20-2013, 07:55 PM
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Quote:
Originally Posted by BOBCRMAN@aol.com View Post
Those springs have a safety margin already figured in.
Alright, thanks. I didn't know that.
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