Based on your description of your problems, two thoughts come to mind, the first is your carb and you might check the flow by looking into the primary side of your carb when you accelerate,(you will want to wear safety glasses, just in case), the second thought is did something happen to your cam when you broke it in?
HEI's normally work or don't work and what you describe sounds more like carb. Spark plugs can cause the problem but I understand that you have addressed this.
Good luck!
JIm
|