Meep-Meep is right....BUT, the low compression/big cam combo CAN be made to run well, although it will not be as powerful as a smaller cam with the same compression, or more compression and the same cam.
Here's the reason. The Edelbrock carburetors use metering rods. Metering rods operate off of vacuum signal. That camshaft doesn't have enough vacuum signal at idle for the metering rods to operate correctly. You can get a spring kit and TRY to tune the carburetor to the cam, but I suspect it is out of the range of a spring kit.
My advice would be to get a Holley 600 vacuum secondary carburetor. You will be much happier even though the carburetor is smaller. A smaller carburetor will always work out much better than one that's too big. Also, since the Holley lacks metering rods, it is much more tunable with a low vacuum signal. If you have a friend that knows about the Edelbrock carburetors, or want to give it whirl yourself, I am sure there's room for improvement with what you have, I just don't know how much. I KNOW a Holley would make it run pretty good.
Changing the camshaft would be the ultimate way to correct the problem, but if you're constrained by budget, it might not be the best way for you. I think I would try tuning the Edelbrock first. That would be the cheapest thing, and might actually end up working.
Here you go.
http://www.ebay.com/itm/Carter-AFB-...Parts_Accessories&hash=item2a2a4572fd&vxp=mtr
That's a CHEAP metering rod spring kit. They actually go down farther than I thought in vacuum signal. What you need to do is see where your vacuum is idling. I don't know a lot about tuning Edelbrock/Carter AFB types, but here is a nice article about it. I just never have liked them, but that doesn't mean they aren't good units. Good luck.
http://www.carcraft.com/techarticles/carb_tuning/