So with this system I assume the stock oil pump and pickup are removed. What is done with the port where the stock oil pump feeds, is it plugged?
I do not block the port from the stock oil pump to the cooler , just block it off at the cooler . I feed oil in at the cooler pad , and then block off the oil regulator port on the front cover. I take my turbo oil off the cooler pad. Taking oil from the valley is not the best place , It could starve oil off the center cam bearing which is feed by the center main
S&T water Jet has the pattern for the cooler pad with both a dry sump single hole and stock pump duel hole.
as to vacuum pumps. I can remember walking the wrecking yards 25 years ago looking for different styles of smog pumps . The best pump was the nipindinso off the Mazda . We then tested these on an eclectic motor driven test stand. The Mazda pump was worth 15 to 20 hp on a wet sump engine . We learned quickly to put a vacuum breaker , or regulator on engine as wet sumps did not like vacuum above 18 inches, and lost oil pressure and usually kicked a rod out .
I worked with several 2.6 programs on valve train and cam programs and we used a 12 volt shop vacuum motor and connected it to the valve cover or side cover of Cummins and duramax engines. We really cleaned up the blow by.
Running vacuum on any engine alone is not all of the power gains . I use an extremely light weight ring package . usually a back cut 1/16 1/16 3/16.
tool steel top ring and napier second ring . I currently use lateral gas porting as well .
here was my 292 cid low deck Chevy C/ED motor in 1999 with the first of the moroso vacuum pumps. This was an extreme wet sump engine program and made really good power 780 @ 9700 .
if you will look at the bottom on the engine on my D/ED you can see the Nipindzo pump
Now gas engines such as Pro Stock use ultra small ring packages .75 m .75 mm 1.5 mm