I will take a picture of my setup tonight and point out what needs to be done to convert to an ls6 pcv system

to clear up the air intake tube... it's in front of the throttle blade so air is pushed in to it... if it was bind the blade the vacuum would pull air out of it... the pcv system has to have some way to pull air in to the crank case...

The line on the ls6 valley cover goes in the side of the intake and that is under a vacuum. So it pulls air in from the TB to the passenger side valve cover 1st inlet and then it's pulled out with the vacuum of the motor... the motor is also setup in away that it's pressure balanced so it can easily share air to both sides of the motor.

And yes if the system is not setup right you could lose HP or hurt rings...

 

Also, stay away from the fixed orifice PCV. It caused a noticeable difference in idle and MAP stability. I learned my lesson.

 

So I understand the use of the intake in front of the throttle body--but why does the PCV system need the other intake that's Y'ed together with the LS1 PCV tubing?...

-ch

 

The problem with PCV vents in the valve covers, is during hard cornering, a lot of oil gets thrown into the valve cover on the outside of the turn. That oil then gets sucked into the TB instead of just the gasses. Since Z06 Vettes can corner really hard, they needed to come up with a different PCV system, thus the valley cover design.

Maybe some engineer thought that having a PCV on both valve covers would releive the presure more equally, but I think it would work fine with just one side or the other. Of course having it in the middle releives the presure equally from both sides also.

 

Okay, so you're saying that on the original LS1 system, the crankcase pressure is venting out of both valve covers, into the plastic Y (near the firewall) and then into the soleniod just before the intake. The metal baffle on the driver's side and the plastic one on the passenger's side are identical in function but different in design, mostly to allow for a second baffle on the passenger side for fresh air intake when the crankcase pulls a vacuum.

Have I got it?

-ch