I pulled the plugs first to find number 3 cylinder full of water. Drained the water (a lot ) and oil from pan, removed the head ( a lot more water) to chech gasket and head. Gasket seemed ok but the (C) head had previously been repaired. Brazed nearly all the way across the center. Nice job but I feel it's where the problem is. I have decided to get a new 5.5 to 1 from Snyders along with a gasket. Thanks for all the help guys. Ron