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how to drain exhaust manifolds on 409 engine

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So I winterized my new boat tonight and went to drain the exhaust manifolds . Now on my old 350 monsoon I would disconnect the garden hose quick disconnect couplers on the crossover hoses and would drain a lot of water out. My new boat, 2015 with 409 had the same cross over hoses but no quick connect couplers. It had a plastic tee fiting with another connection on the bottom where the water cooled shaft seal hose would connect. I took off both hoses from this tee fitting and I got zero water out? Did my manifolds drain by themselves through the shaft seal hose? or is there another way to drain the exhaust manidols and cats?

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Most of the water drains back through the shaft packing and out of the boat. You should be able to disconnect where the shaft packing hose meets the fitting with 1/4" nut driver, then you have to push the exhaust manifold hoses down into the bilge to drain them. Don't forget to re-connect and don't forget the big plug at the bottom of the v-drive :)

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