I have a suggestion for the upper side of the addition of a PCV system for any engine but especially our Y's. Your oil fill tube at the front of the engine breather should not be open to atmosphere when adding the system. The manufactures do not do this; the "sucked" air for this system should be "filtered" air from inside the breather of the air cleaner you choose. The normal push on breather does have some filtering material but I do not think it's sufficient and allows the "smell" after shutting down. I purchased a push on cap with a 1/2" tube and ran it to the area in the inside of my air cleaner thru a homemade double 90* fittings, thus the air being drawn in by the PCV will be be better filtered.
This will also work for engine with no PCV system if you don't want blow-by under the hood but it is not for that but will work. I can post photos if anyone wants to see what I did.

56 Vic, B'Ville 200 MPH Club Member, So Cal.

Anyone know where this Post is and can You provide a Link? I couldn't find it using Search.

  

oldcarmark Are you wanting to see what I did? I never put the photos anywhere but will do it here in a reply if someone wants to see them..

56 Vic, B'Ville 200 MPH Club Member, So Cal.

I was looking for Greenbird56 old Post regarding Restrictors etc. He's a pretty smart Guy with this Type of Stuff.

  

I don't recall him doing a pcv restrictor.

For his cooling system a part of the modifications was a restrictor in the bypass hose.


Lawrenceville, GA

I’m pretty sure Steve did a PVC restrictor too. What I don’t remember is how he determined the size, or what he drilled the plug to.

FWIW, if you can’t find a “closed” cap like DLR mentioned, or if you’re using aa aftermarket valley cover, you can get oil fill tubes with a closed cap. My bird uses the sealed tube, with a threaded bung from a 69 Camaro. Painted or chromed.

I always run closed systems both for the filtered air and the reduction of vapor smell.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ

oldcar... Yes I agree  greenbirds has helped me thu many problems.
I found a PVC replacement for a 1961-2 Ford Mercury 292 on E-Bay in the original package. It has a 1/4' threaded end and is to be for the rear of the carb. It was made by Union Electrical Parts in North Bergen N.J. and has a price of $1.57 still on it. #PV580. It fits other Fords, none newer than 1964 but It could have been made then. I have the correct valley cover for it and still need to put it on.

 

56 Vic, B'Ville 200 MPH Club Member, So Cal.

Here are several of GREENBIRD56’s posts that mention an orifice in the PCV line.  Maybe one of these will help.
http://forums.y-blocksforever.com/FindPost138086.aspx
http://forums.y-blocksforever.com/FindPost96548.aspx
http://forums.y-blocksforever.com/FindPost79650.aspx
http://forums.y-blocksforever.com/FindPost73733.aspx
http://forums.y-blocksforever.com/FindPost66834.aspx
http://forums.y-blocksforever.com/FindPost66827.aspx
http://forums.y-blocksforever.com/FindPost61153.aspx
http://forums.y-blocksforever.com/FindPost58030.aspx
http://forums.y-blocksforever.com/FindPost53399.aspx
http://forums.y-blocksforever.com/FindPost52157.aspx

Lorena, Texas (South of Waco)

A friend who  taught auto mechanics for years in HS and finally at the JC level for over 20 told me today that the 1964 Corvette did not have a PCV valve but a 90*fitting at the rear of the carb with a .060" hole in it. It's the only one he ever knew of.

56 Vic, B'Ville 200 MPH Club Member, So Cal.

I'm using a microgard PCV2377. It was a band aid used by GM for oil consumption. Its basically a empty shell with a very small hole in the bottom. Its sometimes called a fixed orifice valve. So far it seems to work ok. Vacuum readings are a little better. Best part is it was only .99 cents.

Kenny  Onalaska, Texas