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My catch can fills completely with oil in probably 20 minutes of driving. (NA 383 LS1, Heads/Cam, Intake)
I have the dirty side coming off the drivers side PCV valve.. routed to the lower port on the EliteEngineering can, and I have the top port connected to the Fast Intake behind the throttle body. Currently have one port blocked and rear port with a small breather for fresh air on passenger valve cover.
Can anyone help me account for why it’s filling like this? No significant blow by with the oil cap removed etc. It didn’t matter which way I had the lines connected at the can it fills up WAY fast.
Probably the valve cover. The baffles in those have been improved substantially over the years.
Replace them with the Dorman ones, which have the better baffles.
Your truck will probably run AHELLUVALOT better - especially at idle - if you do away with the "breather" and instead drill a port into the intake tube between the MAF and the throttle body, and hook the pass side port up to that instead.
Probably the valve cover. The baffles in those have been improved substantially over the years.
Replace them with the Dorman ones, which have the better baffles.
Your truck will probably run AHELLUVALOT better - especially at idle - if you do away with the "breather" and instead drill a port into the intake tube between the MAF and the throttle body, and hook the pass side port up to that instead.
That would be a nice remedy! Can it really pull THAT much oil with the unrevised valvecover?
Is there another method I should consider? No catch can somehow?
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Catch Can fills with Oil 
