big

now where exactly would u find valve springs for this cam?

Crane Cams 1448041 - Crane Rapid Ramp Camshafts - Overview - SummitRacing.com

I believe most of the dual springs are rated for that.

.714???

ok, the comp doubles are rated at .675... I was thinking it was .7 for some reason.

lol..yea thats a crazy amount of lift

Not only that, you may have to run a longer valve.

holy crap!!
operating range = 4600-8800rpm

i dare somebody to DD that!