so then wouldn't a crank scraper and windage tray be bad? i mean i know to keep oil off of the crank=less weight/rotating mass but if it means reduced cam oiling?!?! also blocking off the holes abve the cam?
Not necessarily, the purpose of the windage tray is to direct the oil coming off the crank down the sides of the oil pan, because of the slots on the side of the tray, and out the back and front of the tray. Also the crank creates a strong enough wind hence windage that it will actually try drawing oil up from the pan into it. The windage tray and to a lesser degree the crank scraper largely prevents a lot of that happening therefore cutting down on friction and foaming of the oil which is another problem. There is still lots of oil being sprayed upwards off the crank which finds it's way to the cam lobes and lifter faces. When people are talking about blocking off holes or restricting the oil feed galley to the sides of the lifters it's sometimes because of a switch over to roller lifters which do not need the same amount of oil as a hydraulic flat tappet. Notice I said sometimes.:-D