Ok, I took off my upper intake manifold and man was it DIRTY. There was crap gunked up all over the place. I cleaned it up as best i clould but its hard to reach all the way back there. It was the same way with the lower intake but i could only clean what I could reach. I might end up cutting the manifold. I could bring it to my old machine shop class to have it cut and then bring it to the welding dept. But for now i was wondering if i should take the lower intake off and clean all the runners. I might polish it but for now i just want clean it. If I do take it off, do I need to drain some of the coolant from the block? I dont want coolant leaking into my lifter valleys. Any helpful advice or hints would be great. Thanks.