I have an 06 5.3l L33 with a TBSS intake on it. I am getting to the point in the swap where I need to figure out the pcv system. Most of the schematics I have seen have a port in the valley cover but mine does not.

I have a port in each valve cover, a port with a line in the top middle of the intake, the evap port which I can plug or use for something else, and a port on the side of the throttle body which is currently plugged.

Here is a pic with all the ports circled :

https://imgur.com/a/yv5u6J8

How do I hook this up and where do I place the pcv valve? I suppose I could run a catch can if need be. Any help or advice would be greatly appreciated! Thanks in advance!

 

That pic you posted is a 2009+ TBSS intake with the hard plastic PCV line. The 2008 and earlier TBSS intakes have a nipple that takes a regular rubber hose to the PCV valve. You can use the 2009+ plastic PCV line but you have to cut it and clamp on a piece of hose to the PCV vlave. Some driver side valve covers have a removable PCV valve in a rubber grommet. Newer Gen 3 covers only have a nipple with a non replaceable PCV. The passenger valve cover hooks to the throttle body with a rubber hose.

Passenger Side

Attachment 713124

2008 and earlier intake with the PCV nipple that uses a rubber hose.

Attachment 712838

 

That is super helpful. So I can plug the evap port, cut the hard line and connect it to the driver side valve cover with rubber hose and an inline pcv, and connect the passenger side valve cover to the throttle body port and I should be all set, correct?

Thanks for your help!

 

The one thing you want to be certain of is that all air going back into the intake manifold has gone thru the MAF. No "outside" air need apply....

 

I will be using the Holley terminator Max x system so that should simplify things

 

Correct... but...

Not sure what you mean by "inline pcv" as in aftermarket?

If your drivers valve cover has the rubber grommet there is a replaceable PCV valve with a GM part number. If your cover only has a nipple without the grommet THAT is the PCV valve. All you need is a vacuum soruce from the intake. I'm guessing the latter has a small metering orifice to act as the valve.

Replaceable PCV



Non Replaceable PCV just connect to a vacuum source

 

That is correct, sir.

 

I have the second, non replaceable pcv. I will just cut the hard line coming from the intake and connect it to that valve cover with a piece of hose and some clamps. Thanks guys, I really appreciate it!

 

What about that port over the fuel rail in the first photo, and in the back left in the second? does it need a cap or is it just a peace of mind kinda thing? If its needed what kind of cap?

 

I had a threaded insert welded to my intake tube, added a 90 degree fitting with a nipple, and ran a hose from that to the port near the fuel rail. I can post a pic if need be.