Sounds like you didn't fill it right up , there is a bolt on the plenum side , you undo that and it makes it easy to fill the radiator/engine with coolant ( i hope thats what you used , not water as you say). If you don't undo this bolt to let the air out she won't fill up , thats the reason it took more, i would think by now she should be full though .
If you got it very hot there is a chance that your headgasket maybe blown or at worse the head cracked, if the oil is not milky and there is no oil in the coolant, it's probably OK.