New car to me but the motor had been rebuilt by previous owners never finished timing. so fresh a few years ago, anyway I had gotten running and driving decided to put new floors in and when finished started her up and oil/gas started coming from breather infront of intake manifold, is this a intake manifold leak? there was no smoke or any other indication this was going on other than I had the hood open and went to close and saw what was going on. also this is the 330 motor from what I was told.

 

Check your PCV valve and hose first. It is not a manifold leak. What you have is called blowby, might be a set of sticking rings allowing combustion gasses into the block.