Originally Posted by IN2H2O
I think there is more to it than just cams and an intake though. Pretty sure you need a new or reflashed ECM and a few other goodies.
Youre right about needing more stuff. In a pushrod engine (HEMI, or most chevys), you have to take into consideration, rockers, springs, pushrods, lifters, timing chain along with crank & cam sprocket, and a tune. Make sure you get the cam degreed an upgraded oil pump (if needed), and to get the best out of any cam, youll also need gears and a torque convertor (if auto), and a tranny cooler, for the higher stall. And if you wanna go all out, get your heads and intake ported. However all this really depends on the cam, and the engine its going in.
Now all this is just for a pushrod engine. 1 cam. A dual over head cam will have 4 cams therefore more expensive, and will have a different setup. I dont know much on DOHC engines, but they get rid of the pushrods and tend to spin at higher rpms.
To the OP, im guessing youre not going all out with your setup, but i hope youve researched all this previously, and have enough support on your valvetrain to handle the cam(s) of your choice. Again. i dont know much on your engine so this is all i can help with.