I have a new 350 engine in my Camaro with less than 3000 miles on it. I was driving last week and smoke started pouring out of the back of it. I pulled over and oil was leaking from the back of the engine(passenger side) onto the passenger side header. Any ideas where this might be coming from? Doesnt look like a valve cover gasket. Hoping it's not a rear main seal. It only starts leaking when it gets good and hot. I am taking it to the shop tomorrow, but I was hoping someone might have been in the same boat at one time or another. Thanks!!!