i've never had a motor with over 500 inches, mostly 482 and 440 so the cam selection will take some more research. since i plan to run injected methanol, like i have in the past i think the compression ratio should proably stay around 13.0 to 14.0. with the 4.10 gear i think the rpm should be around 6800 to 7000 but i also have a set of 488 if i need to increase that. i've noticed alot of engines that are using the 4/7 swap cams, i'm going to check them out. i've used isky, crane and lunati in the past. ihave a comp cans solid flat tappet cam in my steet camaro... i haven't had bad luck with any of them.