The Dodge Challenger Message Board

Does anybody knows the clearance from piston to valve using 88cc open chamber edelbrock heads and trw 2295 domed pistons?
Is possible install 1.6:1 instead 1.5:1 roller rockers using this combo?
On this article http://carcraft.com/techarticles/116_0111_mopar/
they are using this ratio with 2255 flat pistons and 84 closed chamber heads with 0,110" intake valve to piston clearance.