Khaos
Bed Dent Club Founder
I should have said, if the combo runs out of hp before 6100rpm....then theres no big need for a 6600rpm stable valvetrain. Springs ive said like 8 times with an article link. Psi1511ml
Worth a read if you increase valvetrain weight and want to turn rpm How to Maintain Valvetrain Stability - LS7 Exhaust Valves - VETTE
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Excellent article. I was always under the assumption also that dual springs were better, but I can see why they aren't always the right answer.