Post up pictures of how you ran your PCV lines to the can/cans? Are they vented cans? Did you use a LS1 or LS6 valley cover? Did you use a new front main seal in the timing cover when you installed the ATI?

 

well the oil up top could be because of air-dam but it's most likely intake manifold or possibly something auxiliary or peripheral to motor like PCV or remote oil filter.

 

I'll post up some pics, its all really simple. I'm missing something though.

 

I think its the valley cover. I'll look when I get home but I have the valley cover going directly into one of the throttle body fittings. So its basically drawing a vacuum on the valley cover sucking the oil out. Its also an LS6 cover so it might be leaking from the fitment as well. I did the usual grind and fit you have to do but don't know if its perfect or not. Hmmmm

 

What year is your block? For earlier LS1s you have to grind a small piece to do the LS6 valley cover conversion. Also, what year is your valley cover from? The '01-'03s still had an external PCV valve in the line between the valley and manifold. The 2004 had no PCV line, but the oil/air separater on the bottom of the valley was different.

If you have the valve covers vented to a catch can then you can plug the valley cover port, intake manifold port, and throttle-body port.

In OEM configuration on a 2001-2003 LS6 you have a line from the valley to the manifold with the PCV valve and then you have a rubber hose from the passenger side valve cover port to the throttle-body. I have cans on both of those lines.

If you didn't use a new front main seal when putting everything back together it will leak badly. Also, did you remember to put RTV at the bottom of the timing cover?

 

Yea I put RTV on the bottom of the timing cover, the front main seal is new, the valley cover is from an LS6, I don't know what year and I did have to grind the block to fit. My block is like a 98. I have the passengers side valve cover going to the throttle body as well as the valley cover. So your saying take both valve covers to catch cans? Makes sense.

 

Did you seat the balancer before tightening the front cover?

 

There's a couple ways to do it...

1. Put cans in the existing PCV and fresh air feed lines (what I did)

2. Cap off the OEM stuff and run lines from the valve covers to a catch can.

The LS6 setup only has 2 lines:
1. PCV line from valley cover to manifold
2. Fresh air feed line from TB to passengerside valve cover

The LS1 setup has 3 lines since the PCV system draws from the valve covers:
1. Drivers side valve cover line coming around the back of the manifold
2. Passenger side PCV valve cover line which liks with the driver's side line and runs to the manifold
3. Fresh air feed line from TB to passenger side valve cover

However, all of this is moot unless you ran your lines to a vented breather can and the breather can is shitting oil everywhere. The motor in my father's Panoz was doing this. It'd get the can 1/2 full and oil wold mist out the breather filter and make a huge mess.

FWIW here's my dual can setup put inline with the OEM existing lines:

 

no but honestly I don't see oil coming out around the balancer. Its all from the top of the motor and the valve covers are dry, I think the valley cover is where the issue is. I'll post pics of the valley cover when I pull the intake.

 

here's mine lol, I see what you did there. The PCV line is the one that is looped back around to the intake, didn't like it when I did it, definitely don't like it now.