Bought a rebuild 327 with Camel Hump Heads 64CC thats going to go into my 81, Its a 1967 327 small Journal, steel crank, Here is what has been done to the engine
-Sealed power Teflon coated .30 over flat top pistons
-ARP Rod bolts
-Moly rings
-Double roller timing set
-Felpro gasket set
-Rod bearings
-Cam bearings
-Frost plugs
-Oil pump
-Lifters
-HP camshaft L-79 Hydraulic 447 Lift
-Reground Crankshaft
-Valve spring
-2.02 and 1.60 stainless steel valves
-Edelbrock Air Gap polished Intake

Do you think i can run this carb on this engine?
http://www.holley.com/0-80457S.asp

 

Nice color on the engine!
There are a lot of factors that affect cfm requirements such as, h.p. rating, maximum rpm's, compression ratio, size of the cam, rear gearing, auto or manual trans, etc. Too big of a carb, and low-mid range driving will suffer, too small and the engine will starve out at higher rpm's. Calculations show your 327 flow capabilities to be 567 cfm @ 6,000 rpm's, and 615 cfm @ 6,500 rpm's. As you might guess, your engine is going to be stretching the 600 carb to it's limits, and maybe even a little beyond. So with that, I would say a 600 cfm carb is too small, and consider slapping a 650 on instead.