So I blew out one of the water ports on one of the heads on my boat. I don't know squat about the motor other than it's a 454. Found a motor/tranny combo local for cheap. Pulled the heads off and block, pistons cylinder walls look fine. So I'm thinking about just swapping the heads and manifold.
My question is about water circulation. The old manifold (left) appears to have water ports to flow throug the center of the manifold under the carb. There is no exhaust ports on the old manifold. The new manifold had exhaust ports. Do I need water flowing through the manifold? Or not? Any other issues or questions please feel free to help out I'm a newb to this stuff. Thanks