Hey. Between the cylinder 2 and 3 intake ports and 6 and 7 intake ports there is a small hole(bout an inch). I thought it was a water passage but Im not sure. My manifold has a little passage that runs from one bank to the other. Are these hole's here so water can cirulate and cool the manifold down? I though cleveland's had "dry" intakes?? Thanks for the help. And this is with a 2v clev and a performer.