Chris6060
I'm Awesome
Im doing the same thing. Using an Edelbrock 2116 manifold and a Camaro LT1 cam. Save yourself some money and just use these springs.
http://www.alexsparts.com/valve-spring-kit-sb-chevy-vortec-hi-perf-hyd-roller/
They're Summit Racing's Vortec heads. They come with new valves, springs, and all that installed already for .520" of valve lift.
If I had a set of stock Vortec heads, thats what I'd go with though!