DrX

iTrader: (7)

Still have a slight oil leak from the back of the valve covers, I think. Have a few drops at the back/bottom of the pan after a couple of runs. Push-in oil fill cap on the LSX valve covers also wants to blow out, so I had to make a bracket to hold it down. Diptstick pushes out a little, but the heater hoses hold it in. Running about 18.5 psi of boost. I have both valve covers vented to a breather tank, which only collects water.

What else can I do?

LS1TRUCKGUY

iTrader: (7)

vacuum pump?

Jason Z69

^^^^ what he said. I think it will help. And if enough vacuum is pulled it can help a lil on ur time. It did on my friends camaro. (less pressure under the pistons will allow easier movement in the crank case.

DrX

iTrader: (7)

Some have said I shouldn't need one, but it seems to me that I do. Don't know where I would fit one...AC delete?

RS/SS 4.8

iTrader: (13)

How big are the breather holes on your valvecovers. Maybe going bigger will help? I know of some guys weld on like -10 AN and bigger fittings when venting the valvecovers.

DrX

iTrader: (7)

The LSX covers only have 3/8" pcv ports. Previous fabbed covers had -12 fittings, but I was still having issues with them and they were not baffled.

pittman

iTrader: (2)

I will be selling my vacuum pump soon if you need one. I just rebuilt and don't need it. It is from GZ Motorsports..they run about $800

Pitt

Atomic

iTrader: (42)

I had a similar problem and added 2 1/2" barbs on the driver side and a filter on the oil cap on the passenger side, it seems to be fixed now. Kept the stock pcv ports as well as a 3/8" barb in the valley cover.

DrX

iTrader: (7)

I have no valley cover port due to lack of clearance for it.

DrX

iTrader: (7)

How does that pump mount?