2017 Camaro SS, 2014 Ram 2500 4x4 Cummins 6.7L, 2004 Chevy Avalanche Z71 4̶X̶4̶(now 2WD), 5870lb race weight, 10.93@ 124, Twin TVS1900s, Twin Throttle, 429 LSX, 4L80E, custom 14 bolt rear, V2, R̶o̶a̶d̶R̶u̶n̶n̶e̶r̶(dead), COS3......
Gettin' the Groceries
How much blow by do you get on this motor ? I wonder if the sump is pressurising enough to blow oil back up to the rocker gear as it tries to return to the sump? The other point is that as there are no baffles in the rocker covers, you may find that the outlet ports happen to be in the direct line of fire for one of the rocker oil holes. It may be that the oil is firing straight into the outlet and then getting sucked through by the blower. The more RPM's you run and the lower the manifold vacuum, the more oil would get into the catch can and then motor.
Simon