Windage Trays; Good Or Bad

As I understand it, the depth of the oil pan isn't the concern. The windage try creates a "scraping" effect on the air surrounding the crankshaft. Because of this, it pulls oil drops out of the air, and way from the crank. This is supposed to do two things. It'll lower the resistance to the spinning crank, and it'll return oil to the pan more quickly. This allegedly gives a small amount of power gain.

When I was building the 340, I put one in, since hp gained wthout burning fuel is a winner in my opinion.

YMMV