Those heads won't work with the F-cam. it has little to do with the valves if there isn't any stroke. I kow a few people who run Victor Jr.'s (2.055" intake valve) on 302's. The problem is the springs. The F-cam .512 lift with the stock rocker arms and the springs are only good for .500 lift according to the website. 1.6 rr's will give you about a .530-.540 lift ( I use to have the exact number), but anyway for the price of those heads you could get a set of GT 40's and 400 dollars more gets you Trick Flow, Edlebrock, Brodix, World, AFR. What ever head you by make sure it has a lift minimum of at least .550" The higher the lift, the better the flow.