Yesterday I finally started on my 460 resurrection project, this is a motor that has about 200 miles on it but has been sitting since about 1989. I was looking for cracks in the block and found none visible on the outside, nor in the lifter valley, and what coolant I did see in the pump was very green. I also pulled the plugs and turned the motor over by hand, it turned nice and smooth from the start but there was oil coming from the #7 cylinder--looked like it puked out a few ounces, then no more. What is this a sign of? Should I be worried?