Both sides of my engine seen to have a slight ticking noise from the valves. I pulled a cover and started it, it took at least 20 seconds before oil started coming and the oil is just slightly oozing on to the rockers, is that normal? I thought they were supposed to be shooting oil hard. The engine is a 1975 350 in a 73 k20. She gets run at 3000 rpm almost all the time.