All the above are good answers. Baffeling is the first step. Windage and scraping a good idea too. A simple scraper is just an angled tin strip in the pan like picture #2 below.

Now is this 416 a standard or a Magnum block? The standard block has 1/4 inch oil holes from the right lifter gallery down to the Mains and that needs the McCandels drilling mod. Also the standard blocks oil passeges from the pump to the filter and then back to the right side lifter gallery is about a 13/32 hole and very rough bored. Needs drilled to 1/2 inch and be smooth.

The Magnums have 5/16 holes down to the mains so no drilling. The passage from the pump is between 15/32 and 1/2 inch. The #5 main bearing cap is too small and should be drilled to 1/2 inch and blended to the port of the pump.

Now, stock oil pan pickups are JUNK. Too small tubing size. With a stock pickup and a Melling High Volume pump, a direct pump pick up (see picture below) will flow more oil even with a low volume pump. This is the type of pickup that replaces the oil pumps cover and has a 1/2 inch or bigger port. Depending on what the engine is going in, you may need a longer tube. The picture below is for a rear sump Truck 360's pan.