Long valves on W2's with .600 lift?

Wyrmrider said

good vibes on the pushrods yr stiffer is better
more so for circle tack
yr also observes that the springs dance around
so what for spring seats?

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Not sure about seats or locators... not that far right now.


I'm pretty sure I'm going with PAC 1220 beehive springs... 1.440 diameter at the base. After seeing how much a regular spring dances around at speed the conical or beehive is a big improvement.