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Old 01-11-2010, 08:24 AM   #1
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Car: 1992 Camaro RS
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When to use longer valves?
I am trying to decide to rebuild a set of stock heads and I am curious as to when or if you need longer than standard length valves? I'll be using comps XE268 cam (flat tappet), so there is not really that high of a lift. I will also be using the springs the Comp calls for to match the cam.

I am keeping this on the cheap since I already had these heads laying around. I hope in the near future I'll be able to get some better heads.
Thanks
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Old 01-11-2010, 09:17 AM   #2
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Re: When to use longer valves?
You need longer valves when you use a camshaft that requires a valve spring with a higher installed height. Using longer valves also requires different length pushrods to maintain the valve train geometry.
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Old 01-11-2010, 04:31 PM   #3
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Re: When to use longer valves?
Thanks ... I have to check my pushrod length anyways because of the block being decked (I think .009).

Is the factory spring height is 1.70?
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Old 01-11-2010, 04:31 PM
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