Best 273 and 318 builds (NO 360's please)

rumble, thats a very good point you have....I wonder why edelbrock recommends 1.5 ratio with the rpm cam? I think with that cam which is 488/510 is plenty for my 318...how much more would it be with 1.6 rocker arms? do you think that would be too much lift altogether for my 318, with those heads/springs?