have a sb 350 that i had out back for a while under a tarp then moved into the garage where it sat for several months. well durring its time out in the yard the tarp blew off and it got rained on. pulled the heads off this weekend and pulled the drain plug on the pan and got about 5 quarts of water out of it! /forums/images/icons/shocked.gif the back 2 cylinders on each side have a good bit if rust as do the corisponding valves on the heads. the water probably sat in there for 3 months. haven't pulled the pan yet to look at the crank- scared to. the motor was a builder to start with. had a bad knock. so is i worth taking to the machine shop or should i send it to the junkyard?