Yes, another question. Now that the 383 is rebuilt, I put a Edlebrock intake, cam and carb. 600 cfm on it. Seems to run fine but I have a hard time keeping it to idle when it is warming up. Once its warmed up its fine but, if I put my hand over the front top of the throat to block the air, the engine actually speeds up!!! I can put the air filter housing on and block both nozzles with my hands, the engine just keeps on running like normal. I poured water around the carb and the intake manifold and saw no change in idle speed. The choke is working like it should. Is it possible that air is getting in somewhere under the intake on the bottom. I did not use the gaskets that came with the manifold. Should I just take the intake off and put the gaskets on? I hear so often that they arn't needed so I tried it without them Thanks, Alex