Hmm that's not a good sign. We hydrolocked our 350 with salt water, did a number on the rings and lost compression (down to about 30psi) on 2 cylinders. I'd say pull the heads and get it looked at. The busted plug isn't a good sign either, we tore our motor down before sending it away to be rebuilt. It didn't have any signs of damage apart from a few shavings in one bore from the dead rings. No bent pushrods or valves, cracked head, cracked pistons or bent rods. All of which can happen when you hydrolock the motor. Can you turn the motor over by hand with the plugs out? If you got water in the motor it might have killed your starter too, they don't like to get wet. You'll probably need to pull the main pulley off the crank and use a lever in between the bolts to turn it over. If you can get it turning over spray WD40 or some other kind of light oil down the plug holes as you go. Helps to get rid of the water and stop things like rings binding to the block. (Message edited by jtnz on September 01, 2009)
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