If you are using the cam I recommended, then true lift at the intake valve will be closer to .475" (you must deduct the valve lash from the static lift). Even still, you should have around 255 lbs or so spring pressure. Good enough for 8600-8800 rpms or so, which is way beyond your peak rpm power anyway. So you'd have a margin of safety. Sounds like it will work.Originally Posted by markandson


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123 WHP @ 6800 RPM
One wrong move and you can do some major damage $$!!. I have smaller diameter burrs I am using when I get close to the valve seats, Yep I'm chicken!!! 
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