Hello, first time writing, seeking advice on smoke coming from exhaust on my 71 with a 351C. In the mornings when I start the car up, it smokes what appears to be white smoke for about 2 minutes. Goes away for the rest of the day and subsequents starts produce no visible smoke. I'm thinking blown head gasket but not sure because normally there would be oil in coolant or water in oil but 351C has a dry intake so that wouldn't happen or would it? Any advice would be greatly appreciated.