I have 292 with 3x2s edlebrock 573 intake. Downdraft tube wont fit in place. I want to install PVC valve. Where do I vent it to? I dont want to cut hole in valve cover and ther isnt a place to connect it to the carb. So, I need help. What can I do? Is there an alternative to PVC? 

55Birdman  Hickory NC

I have essentially the same setup in my 54 Ford. What I did for a PCV was make a spacer for all three carbs. For the middle carb, I drilled for a slip on hose fitting in the front (right angle fitting) and then angled drilled into both holes of the spacer. The spacers are 1 inch tall made of aluminum, but I could have made it about 3/4 of an inch.

54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

If I use spacers my hood wont close with the air cleaners on them. I am not wanting to modify the hood.

55Birdman  Hickory NC

The PVC valve can usually be mounted in the back of the valley pan, where the road draft tube mounts on later valley covers. If you have a vacuum port in the intake for the distributor or power brakes, tee it into that. Use an oil fill cap with a filter, or add vents to the rocker covers, or both. I think the big issue for you would be having enough room around the back of your intake to get to the valley cover. There are 90 degree valves available to route te hose away from your manifold.

Frank/Rebop

Bristol, In ( by Elkhart) 

It is a tight fit all right . I am installing some 113 heads,270 cam,lifters,vintage speed valley pan when my neighbor gets his building put up. I have a set of chrome valve covers with breathers to install . I will have to take it all apart then so I am set . Just need to do a temp fix now. I will work on a 90 degree valve and try that first. BTW Frank I sent moz distributor yesterday to you.

55Birdman  Hickory NC

Ok, don't mean to hi-jack but thought I'd ask about a setup I've been thinking about.



I want to add a PCV by placing one under the intake, using the valley pan with a PCV sealed in it. I would seal off the road draft canister, and use a filtered cap on the oil fill. The valley pan would need a small baffle under to prevent sucking oil(like the the later factory pcv valleys. The question is where to route the other end of the pcv? I don't want to go into the air cleaner.Am I way off on the thinking here?

1959 and 1960 f-100sAkron OH

You could drill and tap a hole in the intake or find a spacer plate off later model with the port in it for PCV hose.I don't know if you have a 2bbl or 4bbl.As far as modifying valley cover they are fairly plentiful already done for PCV.Maybe this answer helps?

  

I think I'll tap the back of the intake. Having never messed with any PCV'd I was afraid of it acting like a vacuum leak, but I did some reading and I see I was wrong. Thanks for help.

1959 and 1960 f-100sAkron OH

If you are going to drill and tap you need to be close to the centre of manifold as close to carb as possible.If you go into end of manifold it will create lean mixture on rear cylinders.If you do drill and tap there is a screw-in PCV valve you can use if you do the correct size and thread.If you have a 2bbl 4 bolt mounting you should be able to use a mid 60's spacer plate with PCV port in it.Apparently you can also place PCV valve in rocker cover best between rocker arms over one of the supports. There are several posts on this if you search previous items by entering "PCV install" as a search.I just did my 56 using a valley cover I got off 55Birdman.Works great!Use a 1 1/4" cup type freeze plug to cover hole in block when you remove draft tube.Held in place by bolts used on draft tube.Hope this helps,Mark

  

For what it's worth, I bought a pair of baffled pcv grommets from Summit for a project I was working on. They're a TransDapt item... /Duck

BOO- YA!!!