I've spent several hours looking for this info and haven't found it. The current PCV system on the Ford 460 in my 61 f100 is strange to say the least. Whoever built the system just ran a hose from each valve cover to a small tube weled onto the exhaust pipe. That may be goofy, but it hasn't seemed to make a difference in riving the truck. But time to see what it takes to do it right. Theres a plug/bolt in the back of the caRB AND I'm wondering if that is where the PCV line should connect? Here's a photo. There's a spcer under the carb that has a hole in it, directly under the plug/bolt. Could that be a connection point? If so, it doesn't seem to be threaded, and it's blocked, so how to make a connection. In this photo towards the left there is a sort of tab with a number stamped in it ... 8529, not sure what that indicates. I have an inexpensive air cleaner on the truck that has what is apparently a connection point for the PCV line, just dumps inside the filter, no baffles etc.
Stick that hose u show coming out of the rear of the valve cove to the fitting directly under the words Carter AFB. There is something stuck in now. The other valve cover hose will go to the air cleaner between the filter and carb intake.
If it were mine (I personally like the Carters) I'd take it off, stand it on a 4x4 and waste a can or 2 of Brake Clean on it. I bet it will clean up nice; use a small paint brush between cans... good luck
OK, I worked out the PCV stuff, the connection on the passenger side went well. On the drivers side I bought a breather cap with a built in PCV valve and connected to the bottom of the air cleaner. so far, so good. But this can't be good. This is the old connection on the drivers side valve cover. Yes that's the brake master cylinder in direct contact with the vent tube fitting. You can't even get the fitting out without unbolting the valve cover and sliding it up out from under the MC.
Here's a closer look Not enough room to slip a piece of paper in between. This brings me to wonder why these tall valve covers were used. It looks like (from what I see online) that stock valve covers would be as much of an issue. So anyone know what function, beyond looks, that these tall valve covers serve. If they aren't needed I'll just replace them with the stock style.
you should only have one PCV valve, on one side of the engine, and a breather on the other side of the engine.
Yeah, I know that, I'm trying to clean up the mess that the PO installed. Are you saying the fitting in the last image is a PCV ? On the passenger side it's just line to the tube on the carb like jummy six suggested
Which leads me back to the question about the valve covers. Is there a functional need for "tall" covers as opposed to the stock style? If not and since I have to remove the drivers side cover to get that pcv fitting out I'm thinking about swithing to the stock style/height.
Just swap sides with the valve covers, then your pcv and breather will be in the front. Tall valve covers are needed sometime, if you change to roller rocker arms.
Edelbrock Performer carbs and Carter AFB's are basically the same. The front middle port is for PCV suction. The front passenger side port is for distributor vacuum advance and the front driver side port is for automatic transmission. If you have power brakes, the booster line goes to the threaded port at the rear. Look online for this manual: carter_afb_rebuild_manual.pdf. Also there are some great diagnostic videos from Edelbrock on youtube. Fresh air on my Carter AFB Competition 9504s comes from a port on the choke side at the top rim of the carb, a line runs from that to the passenger side valve cover to provide fresh air to the crankcase.
While there are "usual" sources for vacuum , as long as the vacuum supply is adequate , it really doesn't matter where you source it ,if it comes from before the port runners . The OP could use either of the possible taps in the rear of the carb or spacer ..
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