That combo could easily make more than 800 hp with the big bore size and good heads. You would need to port the intake to make the bigger numbers and the cam will have to be right on the nose. The cam specs seem too big for that engine but if Dwayne picked the cam then it should work. He knows his stuff.

My 514 with EZ heads made well over 800 hp with a smaller cam, but I had 1.85 Jesel rocker arms so it isn't a direct comparison.