I read this in another thread and I have actually thought about this and wanted to get a Few opinions on it first.

I was looking at my Lt4 intake the other day thinking their is just too much crap going on, on the sides of the intake. Between Vaccuum Ports, Brake booster port, PCV, ect. I am thinking about having them Welded up with an aluminum Welder and welding the ports onto the back of the intake around the EGR blockoff ports (going to have that welded up as well why were at it.)

Would their be any cons to having them Re-located to the back??????????
Also, this seems like a Newb question but what ports can I just PERMANTLY DELETE. I know for sure I can proabably delete the PCV port since I plan on Venting My positive Crankcase from Each valve cover to a catchcan and have that vent to the Atmosphere.

 

You can't delete the PCV valve, and the vacuum connection from the valve to the intake manifold. At least not without providing some other way to pull air through the crankcase, like a vacuum pump, draft tube or connections to the exhaust system.

The vacuum provides the Positive Crankcase Ventilation. Vacuum pulls the clean air in the passenger side valve cover, the air sweeps the vapor from the crankcase, and the vacuum port on the intake pulls it in to be burned with the intake charge. By using only 2 breathers, and then plugging up the flow with a catch can, the only flow out of the crankcase will be when there is pressure in the crankcase. The harmful vapor will still be in there, and the water will condense out when the engine cools down and contaminate the oil. Not really a smart tradeoff for something as subjective as "appearance".

The EGR ports are not directly exposed to intake manifold vacuum. The ports connect to an internal passage in the manifold, route the EGR forward where it joins the idle air and passes through some more tiny passages to the small holes in the intake runners.

Might also want to add basic info like theyear of your car, since the vacuum connections are not the same on all years.

 

OOOOPSSS, yea the 93-94, 95, 96-97 are different in most categories.
The car is a 96 with a Delteq .

Whats a Draft Tube??? Also from what I have seen the connections to the exhaust is not a good system to use for a Street car, I dunno???

So the spot for the PCV on the drivers side of the intake is only really good for when at Idle?? I was just planning on running a -10 90 degree Fitting from each Valvecover into a Catchcan that vented to atmosphere. The passenger side valvecover to TB from what I know is not apart of the PCV system but somthing else. I was just going to plug it, and if I had any venting problems I was just going to run a Breather on the passenger side.

I have seen LS1 guys with Prochargers and turbos run the PCV system that I have mentioned and from what I know their PCV system doen't even touch the intake??

We are a little off topic from Would their be any cons to having them Re-located to the back??????????
But as long as I learn something I will be happy

 

A tube that extends vertically from the engine to below the engie, perpendicular to the road. The "draft" of air passing under the car causes a vacuum to be pulled on the tube. I haven't seen one of these since the factory went to a closed PCV system 30 years ago.

Yes, generally only used for track setups.;

The PCV system works any time there is a vacuum in the intake manifold. That means its pulling vapor from the crankcase any time you aren't at WTO. The end of the PCV valve that sticks into the intake manifold is NOT exposed to intake vacuum. If plugs into a passage that is connected to the bottom of the intake manifold, and pulls the vapor out of the lifter valley, through the sheet-metal baffle on the bottom of the intake. The baffle keeps oil out of the PCV system, and keeps hot oil off the bottom of the manifold. The vacuum line connects the outside end of the PCV valve either to a port under the throttle body (95-97) or with a U-tube back into the side of the intake manifold (93-94).

Wrong. The tube from the throttle body to the passenger ide valve cover is the clean, MAF measured air that the PCV vacuum pulls through the crankcase. Since the air ends up in the combustion chamber, it needs to have passed through the MAF.

That's because the intake manifold is under pressure, so there's no vacuum to pull the vapor out of the crankcase. And if you leave the air supply line from the TB to the valve cover, you end up pressurizing the crankcase and causing real problems. Typically, they run a breather to supply clean air and prevent the blower from pressurizing the crankcase, and run the line from the PCV valve through an oil separator, and into the blower suction piping. Are you saying you are building a blower motor?

Sorry I got you off topic, I thought it was important for you to know that what you were planning with the PCV was not smart and could damage your engine, and that the EGR ports do not go directly to the intake manifold. Sorry I inconvenienced you... I'll just drop out. If you'd like, I'll delete my distracting posts.

Good luck.

 

No Fred I need you to stay on this one
Thanks for the reply's BTW.

Yep, VRE built the 383, and I have a D1SC procharger for it with a FMIC.
So in my thinking can I run the setup that I talked about earlier since ITS A BLOWER MOTOR???? This is the setup in picture I was discussing
http://ls1tech.com/forums/showthread...&highlight=pcv

If not Give me your opinion on teh Cleanest looking and most effective way of keeping my motor clean from sludge and oil buid Up.
Thanks in advance I am sure I will have questions.

 

Any more thoughts on this?