i rebuilt my 194 because it had a cracked block sent it to the machine shop in my town and got it back installed it and it ran grate but it had a little oil in the water but not in the oil and it dent overheat. then i put a load on it and then i found water in the oil but it still runs good but only has 15 pounds of pressure and only goes up 25 at hi reving doesnt smoke and doesn't overheat can it be cracked behind the lifters pleas help what the hell happened o and i replaced the head gasket twice with the same resaults :