[HWYSTR455]

That was my impression, it is cam specific, but in general, @ 10 degrees diff between HYD & solid. Or should one say 'performs as if it's 10 degrees difference'?

The 919 does give up earlier than one would expect though, you may just be seeing typical results. With your setup, you can easily go bigger.

My understanding is that with iron heads, depending on the porting, you generally don't see much flow gain over around .500-.525 lift. So duration is your friend with iron heads. In stock form, iron heads' flow rounds out @ .470-.490 lift. At least that's my understanding.

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