Chevy LS PCV question

chopshop

chopshop

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What are people doing .
Chevy LS n/a are people running the stock PCV set up or have you gone with an open system with a catch can ? -10 AN on each valve cover

Thanks
 
When my motor was NA, I just used the stock system, but the motor was 100% stock.
If a NA motor is built, I would vent it to a catch can.
 
Mine is setup with a can.

Used this on the oil fill cap- Replaces the cap so you can vent it to your catch can. Simply untwist it to add/refill oil.

motionraceworks.com

LS Billet Vented Oil Cap to -12ORB Male Fitting by Motion Raceworks

LS Oil Cap to -12ORB Male Fitting by Motion Raceworks 34-00045 Easily add a PCV connection to your factory LS valve covers with this billet oil cap with machined in baffling. This screws directly into LS factory valve covers and has a -12ORB female thread. This means you can adapt up and down to...
motionraceworks.com motionraceworks.com

This is for the opposite side with no fill.

motionraceworks.com

10AN Push in Fitting for Factory GM LS Valve cover grommet

10AN Push in Fitting for Factory GM LS Valve cover grommet Motion Raceworks This billet aluminum fitting presses into the driver side rear valve cover grommet on Gen 3 and 4 LS engines to adapt to 10AN for easy connection of PCV systems. Made in the USA Includes grommet for use if not using in...
motionraceworks.com motionraceworks.com

and there are a variety of catch cans available. Motion raceworks has nice ones.
 
If stock displacement, run it stock.

If not, both valve covers and the valley cover should be vented to a can.
 
I removed my stock PCV and ran it to a Motion Raceworks dual 10AN can. One from each valve cover.
 
I ran 2 hoses to the bottom of the chassis, simple.

I don't care if the engine is stock or not, I don't ever want hot oil fumes going into the engine.
 
Couple things,
People are saying a catch can, not sure what they mean by that, they do have a stock style setup with a can to catch the oil and you can drain this can

If the motor does not breath properly then it is a air compressor building up windage, windage is harder on rings and seals,

I like a breather box above the motor, at least 2-3'' above the motor,
the larger the hoses, the less chance oil will travel up the hoses,
stock hoses are 3/8 and can work like a straw pulling oil with them,
Running a 10 is a good idea, 12an is perfect,
Do not have any low spots that oil can pool or travel up the hose, if oil is in the hose you want it to travel back to the motor and the air to travel past the oil.
The Breather box i like 2 filters on the box, and baffles in the box,

Look inside the intake you will be surprised even when the motor is stock, how much junk is in the intake without a breather box
 
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