At the dyno it appears I'm experiencing valve float symptoms with my Zex Stage 2 cam 105300 and the Zex Valve Spring kit, is there any better valve springs that will work well with this cam?

I was thinking of going with Crower, but considering the similarity in the cam lift i don't want to experience to the same symptoms, should I try Skunk2 valve springs? or is there anything better?

 

I'd suggest looking at the specs for the Zex springs (seat pressure, pressure at max lift, etc.) and then compare them to another manufacturer to determine which springs will fit your needs. Good luck.