new problem

[suprabahamut]

with the head off every thing looks good, so when I tried to turn the engine over with the head off the first and the last pistons was not moving. so I sprayed some wd-40 on them and let them sit, the first one started moving with the others, so I looked at the last piston and used a piece of wood and pushed down gently and it moved all the way down with no problem, and when I turned it over it would just sit at the bottom, I know pistons dont move freely like that last one did. and there seems to be no damage under neith the car, so I wanted to ask if a piston connecting rod could throw out and look like it did no damage looking at the block, but could have inside the block, and if this is the case could I rebuild the block, or get a new used one. If any one knows how much a block could range from at a junk yard please write back with some prices just in case