[Ironangel]

Run your valves again to verify you dont have one or more hanging open. Use the EOIC method, never mind cutting a valve cover. Secondly, maybe I missed it but what cam & lifters are you running? Thirdly, find a proven functional carb off another small block with comparable cam and heads just to verify a carb problem. Surely a friend or board member, perhaps a local speed shop or drag racer has a carb laying around to loan for a couple of test hits?...Lastly, read up on mods to the accelerator pumps on those AFB carbs. With those heads and a comparable semi race cam a stock 600 cfm AFB squirter aint going to cut it. I'm thinking either more volume of the squirt, and/or a longer duration of the squirt will make your 327 snap to attention...I'd loan you a proven Cliff Ruggles Quadrajet if you were closer and running a spread bore intake...Good luck, your well on your way to becoming an expert AFB guy!