Dodger Stadium isn't a true pitchers park in the sim. It helps pitchers hold down extra base hits, but has a +2 for singles. I use it alot and fill it with guys like Roy Thomas and Willie Keeler. Seems to work well, at least in live play.
Sometimes, and a response to a ticket I put in makes me think this, I think live and regular sim are two entirely different beasts in terms of game engine.