Ken300D and Mike
Thanks for your hints. I got home from work, topped off the coolant expansion tank and fired her up. It didn’t want to start but after a lot of cranking it turned over. The exhaust was an excessive white smoke. I think I have my answer now. I will be pulling the heads and hope it is only a gasket. Do you normally resurface the heads after overheating? Or does the gasket blow prior to head warp? I had a similar problem long ago with a cast iron engine and had to resurface the head. I think the 380SEC has an aluminum engine. Does the metal act different? Do you think that normal installation torque of the heads down will flatten them out? UnkaMike