The carb is the biggest problem. There is no problem with the Edelbrock carbs - when it's the right one. The 1411 is the 750cfm that is calibrated for performance. It would still need to be tunedto your engine, but at least it can be tuned. The 1407 is calibrated for the larger cid factory engines - 460 Ford and 454 GMs and is designed to be very lean. No matter what you do that model will be lean... So I'd say repalce the carb - I'd stick either a 650 Edelbrock or a 680 Street Avenger on it. Scott Brown is Straight Line Performance and his cams flat out work, and Best builds one hell of an engine. So I think it's tuning, and start with losing the economy carb....
