Originally Posted by coldknock
This has to be a new idea. GM used windage trays on Corvette engines from the factory. I think the LT1 engines in Camaros had them too.
Btw, if your crank is dipping into the oil, you've got too much oil in it. The rod side clearance is where oil for the pistons and cam should come from. There's a little from the drain holes next to the lifters and some hemorrhaging from the lifterbore/cam bearing/journal clearance but the majority comes from the crank slinging oil from between the rods. A windage tray will not touch that supply.
True, both Corvette and F-bodied LT1s use them and I'd assume the iron head ones in the larger cars do as well. I can't really imagine Crane's reasoning if they indeed stated this, especially across the board. In many engine designs, it's actually beneficial to restrict the pressurized oil supply to the cam, and thus the rest of the valve train too, when modifying for harder and higher RPM use. I can't imagine the lobes being dependent upon splash from below, as they are also lubed as mentioned above as well as from the valley drainage in many cases, as part of the oil return system.