I got my 216 running for the first time today, which is just too awesome grin , but it has a serious problem. frown I wanted to break in the cam, so I set the engine running at about 1500 rpm, but after about a minute of running, the coolant level rises and then suddenly gushes like a car in an old movie. I was wondering if maybe it is something with the head gasket, as it was the first I've installed and I didn't get any training, just followed the directions in the manual. Any ideas?