I think I need more cam

Thanks for all the responses. But to tell you the truth, I wanna go racing. Im building it all to spec and everything. I mean occasionally I'd drive it on a Sunday when the weathers nice, I'm not very concerned about making it very streetable. It will just happen to be street legal. The place I work it is very good at doing so.

But I believe I have a decently solid engine build, cept the cam. 418 cubic inches. I know I have a strong rotating assembly Eagle forged crank/rods and Diamond Pistons. My heads are Indy Eldelbrocks with 2.05 intakes and 1.60 exhaust valves: 57cc chambers. I'm polishing the stock port castings. Aluminum roller 1.5 rockers, not sure what brand off hand. I was planning on a Demon carb. I kinda want to run two small ones. And I dont know if you'll believe me. But I'm going to build my own sheet metal intake manifold. Thats why I can either go one or dual quads. So I can make it short for low rpm usage, high rise, or crossram. Same with headers. Build my own, whatever size or shape. I bought a barely used Dynamic Trans/Converter, with a ridiculous 4000-4500 stall. And i think its a 3.23 posi.

The cam I have now is a mechanical flat tappet. I like the 110 lobe separation and it seems like it would have enough torque, but It seems like I need more rpm for my combination. I almost bought a roller. But I read somewhere that the angles of them suck in a small blocks. But I want a fast car I have the ablity to set it up for more rpm. I just want to be sure that 4" stroke can handle the rpm. And of course my other concern was piston to valve clearance, what can i get away with?

Thanks for all the help though.