Hi,
Just bought this '66 F100 with a transplant FE V8 (3.5" stroke is all I figured so far) What is the proper configuration of the ventilating/breathing of this engine?(I hadn't taken a pic when I first got it so I put them back for this picture) The jist is, right side breather/hose went nowhere behind carb. I looked for connection but saw none. Left side breather with PCV/hose goes to air filter. Should one go to carb? what needs to be corrected? Thanks!

As received: oil breathers and hoses

As received: oil breathers and hoses

As received: oil breathers and hoses

 

I think what you have is okay, though it may get a little messy on the driver side valve cover as it breaths oil vapors and crankcase moisture. It should have a PCV valve with a hose connecting to the carb base. Before you connect that cutoff hose to anything, make sure you have the correct PCV valve on the opposite end of the hose connected to the carb base.

Can't see but guessing someone connected the brake vacuum booster to the place where the PCV valve hose goes.

As a side note, you'll want to make sure the truck warms to at least 170F or more to drive off crankcase moisture whether you have a PCV valve or not.

 

Thanks '65 for the response!
Yes there is a brake vac hose to the bottom of the carb Can I /should I add a T connector for both or is there a potential for "backdraft" contamination to booster? Should there be a PCV on both breathers?and is it ok for pass. side to go to air filter? AND can I just oil cap drivers side?
There is some moisture residue on caps threads, good to know about warm up Temp!! (Sorry for the barrage!) Cheers!

 

I honestly have no idea if it's okay to T the vacuum boost with a pcv valve. I tend to think they should be separate.

Usually have only one pcv valve with the idea being to "sweep" the crankcase from one side to the other. The non-pcv valve side should have something to filter the air...either connected to the engine air filter or have its own little breather filter.

 

How about a photo of the engine with the air cleaner removed, without see how and where the hoses are connected to the manifold or carb it’s near impossible to know if the pcv is hooked up properly

 

You do not have a functioning PCV SYSTEM -

 

You can use a T for the booster and the pcv. Make sure the pvc valve is working. The breather hose on the drivers side connects to the air cleaner housing originally to prevent dirt from entering the engine. After market chrome air cleaners typically come with a fitting that may be attached to the bottom of the base for the same function.

 

Sorry for the late response, under the weather. Destroked 450 - Here is a series of pics. Thanks All for your help!

OG breathers w/o air

OG breathers w/ air

this hose was longer originally b4 I changed config. But went behind carb to firewall.(OG RIGHT)

OG left side

This is T from brake booster. one leg capped with bolt. (OG - not changed yet)

what's missing from carb? another vac line?

This is current config. Oil breather cap right side. No PCV valve left side. (just elbow to hose to air cleaner)

 

So Kultulz, as I see this diagram: left side w/o emission is plugged? And right side has PCV? What is 6766 cap? I guess I need to see parts description? TY

 

Your pcv valve is located in the passenger side valve cover, that line should connect to a port at the base of the carburetor, you can connect it to that tee with the bolt in it where the brake booster is also connected
The hose from the drivers side valve cover should be connected to the fitting in the air cleaner base

In the present configuration the pcv is doing nothing and all crankcase venting is going out the open hose from the left valve cover, that’s not good

 

Some of the Fords had spacer plates as shown below to connect the hose coming from the PCV to. Connect the other hose to the base of the air cleaner.
Some versions of the casting had cooling lines as well to cool the aluminum casting and carburetor.

I would be reluctant to connect to a tee with the power booster due to possible vapors traveling to the booster and also decreasing the vacuum needed to operate the booster.

I believe the connection on front top of the carburetor may be an air vent for the bowl.

 

Why a valve on the heater core return?

 

Renwaldo, it was on there when I bought it and have needed to mess with it yet. Truck came from Nashville, idk if they shut off flow in summer?

 

That valve on the heater hose is used to control flow to regulate temperture inside the cab. Very common on older Fords.

 

I'm talking about the valve with the red wheel on the intake manifold. I have simply never seen anyone do that before.