Carb hook up/ Pcv question.

[StickweldinSteve]

I have a pcv on each valve cover one is just a simple L and one is a push in larger filter style. I’m installing a new carb. A Edelbrock 650 avs2. Will it hurt anything to T both pcv’s together and run into the front pcv spot on the carb or should I run one to the front and one to the rear? Friend of mine is telling my to just plug one pcv saying I only need one.

Also Do I have to run a fuel pressure regulator?
Thanks for the help.

 

[Super-Cuda]

This is something I've also wondered about. I stand to be corrected by much more knowledgeable people on here but I thought a PCV valve uses engine vacuum to suck excess fumes back into the engine to be burned off. If you hook up two, do you possibly start to suck oil back through the engine as well by creating too much PCV ??

 

[moparmarkk]

the large hole is the breather,not pcv, it should go to the air cleaner, the other one small ,goes to engine vacuum ,mark

 

[StickweldinSteve]

the large hole is the breather,not pcv, it should go to the air cleaner, the other one small ,goes to engine vacuum ,mark

can I put a push in filter then? my current air cleaner doesn’t have a place for it. The original double snorkel does though.

 

[MomsDuster]

can I put a push in filter then? my current air cleaner doesn’t have a place for it. The original double snorkel does though.

Yes you can use a push in style breather.

 

[moparmarkk]

yes what moms duster said

 

[RustyRatRod]

Pcv on one side breather cap on the other. Don't run 2 pcv valves.

 

[StickweldinSteve]

Pcv on one side breather cap on the other. Don't run 2 pcv valves.

I think what threw me is when I went in AutoZone what I have was called a pcv breather on their packaging. I plugged in a regular breather cap though no lines coming out Thanks man.

 

[RustyRatRod]

I think what threw me is when I went in AutoZone what I have was called a pcv breather on their packaging. I plugged it with a breather cap though. Thanks man.

The breather is the inlet for the pcv system. For it to be dead correct, it really needs to connect to the air cleaner with a hose. Here is a proper PCV system.

 

[66fyssh]

my current air cleaner doesn’t have a place

You can always drill a hole in your air cleaner base to run a hose to.

 

[StickweldinSteve]

The breather is the inlet for the pcv system. For it to be dead correct, it really needs to connect to the air cleaner with a hose. Here is a proper PCV system.
View attachment 1716085651

Thank you for finding that diagram. I’m going to save it, though it’s not hard to follow.

 

[StickweldinSteve]

You can always drill a hole in your air cleaner base to run a hose too.

I might do that. Thanks for the idea

 

[Ricks70Duster340]

The breather is the inlet for the pcv system. For it to be dead correct, it really needs to connect to the air cleaner with a hose. Here is a proper PCV system.
View attachment 1716085651

My original 340 air cleaner housing has the breather tube fitting in the side, thus not filtered air. Since there is filter material in the part that pushes into the valve cover, guess it is not a big deal.

 

[RustyRatRod]

My original 340 air cleaner housing has the breather tube fitting in the side, thus not filtered air. Since there is filter material in the part that pushes into the valve cover, guess it is not a big deal.

Lots of GM products were the same way with a small extra filter within the filter.