Many owners have run into this issue during track events or just "spirited" driving. The main issue in the GM design is the PCV system is vented through the dry-sump tank and pulls the filtered fresh air from the intake bellows. When overfilled, or during aggressive manuvers oil will "burp" directly into the intake bellows:
and accumulate in the intake manifold:
Solutions are to run 1/2 qt low, or to modify the PCV system with the RevXtreme system as follows:
There are also options that would retain the intake bellows source of filtered fresh make-up air that will meet emmissions by adding a second oil seperator in the "clean" side, or the line from the bellows, which will trap any oil forced back through reversion. This would eliminate the remote bleeder in the diagram (which is for "off-road use only").
We have soultions for all C5 & C6 applications from stock to FI.
Just ask if you want any of the other diagrams.
