I have a 66 convertable with a 1989 performance built HO 302. It has a carter 4bbl 625 cfm carb and new valve cover gaskets. Here is the problem-when i accelerate hard ie pedal all the way down there is a bluish haze that comes out of the drivers side exaust, and a slight smell of burning oil, and a little smoke under the hood under driver side exause manifold cylinder 7. There is no oil leaking from the valve cover. I am thinking there is a small head gasket leek. I can cruise all day with no smoke, it is only when i accelerate hard. I cant get it to do it in park while manually increasing the throttle. Any suggestions or ideas would be greatly appriciated.