I have a 4 speed 65 Lemans with a 326 which I built up with +.030, comp 262H cam, original heads, HEI, Edelbrock performer manifold and a Holley street avenger 670 carb. The problem I have is I have to rev the engine up a bit before it seems to catch any power on take off from a standing start. The engine dogs at idle, but is fine above 1000 rpm or so. Any ideas out there for me to check? Mark