Here is my problem, this past fall I finally got my 1969 chevelle together and had my 396 BB rebuilt and put in a Melling Hi-Volume oil pump and a chrome Morroso 7 quart oilpan. I put about 75 miles on it but noticed that the oil pressure is about 5 to 10 psi at idle and only 40 when driving and it was getting lower everytime I drove it. I took it to a friend to check the exhaust out and put it on a lift and noticed that the oilpan was dented in about a 1/2" right under the oilpump pickup. I know I didn't put a floor jack under it and dent it, there is no scratches, it looks like it just sucked in. Has this ever happened to anyone?. Could the oilpump pickup been too close to the pan and sucked it in?. I have a open breather on one valve cover and a breather/PCV on the other going into the back of the base of my carb. I'm going to pull the motor but would like to know how this happened before I fork out another $150 for a new oilpan.