Im with B1MAX... these motors (B/RB/Hemi) have been raced for over 50 years with little to no modification to the external oiling set up but for some reason this one is special????? I think there is an issue that a check valve will not help. But thats my 40 yrs experience talking so I may be wrong
As a point of consideration...every fitting.connection will cause a disturbance in flow (reduced flow) and most if not all of us that have had check valves in any type of system have never seen them fail....as an example I had a check in the oil cooler line on my Bruno, it (the Bruno) got hot enough to melt the DOT spec vent hose laying on the case, why because a piece of debris got in the check and wouldn't let it open (the pressure side) want to bet whats going to happen on the suction side???