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ZO6 Valve spring limit

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Old 03-30-2006, 07:07 PM
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Default ZO6 Valve spring limit

What is the "accepted" rpm that the factory ZO-6 valve springs should be good for? I am talking with a stock cam so don't confuse aftermarket lobe design, also using the stock ratio rocker arms, no exotic stuff. My concern is to use on an automatic car, so the "missed shift" issue should not be a major concern.
Old 04-04-2006, 09:09 AM
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Originally Posted by Red98C5
What is the "accepted" rpm that the factory ZO-6 valve springs should be good for? I am talking with a stock cam so don't confuse aftermarket lobe design, also using the stock ratio rocker arms, no exotic stuff. My concern is to use on an automatic car, so the "missed shift" issue should not be a major concern.
If you have the lightweight LS6 valves they are good to about 7400 rpm. If you have standard stainless valves they are only good to about 6200rpm.




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