Valve Covers
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Fleet Mechanic
Joined: Oct 2007
Posts: 1,985
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Valve Covers
Im going to install a set of chrome valve covers on the 352 in my 66.
The chrome valve covers have 2 holes in the top.
I will put a pcv valve in the passenger cover, should I put a cap vented to atmosphere on the driver side, or a cap that vents to manifold vacume?
The chrome valve covers have 2 holes in the top.
I will put a pcv valve in the passenger cover, should I put a cap vented to atmosphere on the driver side, or a cap that vents to manifold vacume?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
Im going to install a set of chrome valve covers on the 352 in my 66.
The chrome valve covers have 2 holes in the top.
I will put a pcv valve in the passenger cover, should I put a cap vented to atmosphere on the driver side, or a cap that vents to manifold vacume?
The chrome valve covers have 2 holes in the top.
I will put a pcv valve in the passenger cover, should I put a cap vented to atmosphere on the driver side, or a cap that vents to manifold vacume?
Right valve cover: Rubber grommet twists into hole, smog valve fits into grommet, hose routes from valve to nipple on carb spacer plate.
Left valve cover: Oil cap has a nipple made as part of it, hose routes from nipple to elbow on air cleaner.
Cap was available in chrome (with/without the engine "dress-up" kit) or painted black.
Lead Driver
Joined: Oct 2004
Posts: 8,062
Likes: 35
From: Central Oregon
I also run a open air cleaner on both the trucks and my Galaxie, I added a nipple to the bottom of the air cleaner to connect a hose to.
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Posting Guru
Joined: Jan 2011
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From: Rossmoor at Seal Beach
Agreed I did the same just drill a hole and fit in an elbow nipple pretty easy to do...
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Posting Guru
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From: Rossmoor at Seal Beach
I thought there might be. most do have 3 little knockouts for the nipple and the 2 retainer bolts...
Senior User
Joined: Jan 2010
Posts: 398
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From: AR
ND, I've seen you post this before. Was this California trucks only? Weren't there 65/66 trucks from factory with left side oil cap vented to atmosphere?
Logistics Pro
Joined: May 2008
Posts: 3,670
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From: PHX AZ
Why would he answer a question he does not know? If anyone else posted misinformation he would jump all over them.
Not sure about california but the other states had a draft tube on 352's in 1965.
I do not think even the california 1966 352's had a hose from breather to air cleaner. Surely the other states did not.
F100/F250
ND, what ever happened with your 5.0 F150? Remember how bad you said the ecoboost engine's would be, turbo's would never last etc. What made you buy one?
Not sure about california but the other states had a draft tube on 352's in 1965.
I do not think even the california 1966 352's had a hose from breather to air cleaner. Surely the other states did not.
F100/F250
ND, what ever happened with your 5.0 F150? Remember how bad you said the ecoboost engine's would be, turbo's would never last etc. What made you buy one?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
Not sure about california but the other states had a draft tube on 352's in 1965. 
How do you know this?
I do not think even the california 1966 352's had a hose from breather to air cleaner.
My 1965 F100 had it, so why wouldn't a 1966?
Surely the other states did not.
Here again, you're making a statement you cannot back up...unless you know, for sure, what the other 49 states emissions requirements were. I don't know, and I was a Ford partsman back then.
Troll thru illustration section 66.3, notice the oil caps with nipples, the oil baths with nipples made as part of them for the PCV hose from cap, what my '65 F100 352 came with.
ND, what ever happened with your 5.0 F150? Remember how bad you said the ecoboost engine's would be, turbo's would never last etc. What made you buy one?
How do you know this?
I do not think even the california 1966 352's had a hose from breather to air cleaner.
My 1965 F100 had it, so why wouldn't a 1966?
Surely the other states did not.
Here again, you're making a statement you cannot back up...unless you know, for sure, what the other 49 states emissions requirements were. I don't know, and I was a Ford partsman back then.
Troll thru illustration section 66.3, notice the oil caps with nipples, the oil baths with nipples made as part of them for the PCV hose from cap, what my '65 F100 352 came with.
ND, what ever happened with your 5.0 F150? Remember how bad you said the ecoboost engine's would be, turbo's would never last etc. What made you buy one?
OP asked about PCV routing. If a 1965 F100/350 352 came with PCV, it didn't have a road draft tube in the right valve cover, because this is where the smog valve is installed.
Road draft tube listed (6758) in the parts catalog for 1965 352, but it's not listed for 1966 or later.
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Stripper Escape S comes with 2.5L, Escape SE comes with 1.8L Eco as standard equipment, 2.0L Eco optional.
I didn't want a stripper, didn't want the upscale Titanium model either due to moon roof which cuts down on headroom.
5 year powertrain warranty: I doubt I'll have it 5 or even 3 years. I buy something new every one or two years.
F150 went away after 21 months with 7,100 miles on the clock, because it had become ergonomically undesireable.
btw: Ever see a 1966 F100 240/300/352 with a smog pump (basic number 9A486)? Mandatory in sold new CA F100's.
Logistics Pro
Joined: May 2008
Posts: 3,670
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From: PHX AZ
PCV mandatory beginning in 1961 in all sold new in CA vehicles. When vehicles came to CA from other states that did not have PCV, a PCV kit had to be installed before they could be registered.
OP asked about PCV routing. If a 1965 F100/350 352 came with PCV, it didn't have a road draft tube in the right valve cover, because this is where the smog valve is installed.Show me anything in the ford parts books indicating any smog on a 1965 F100/350 truck, I do not think your 1965 352 had a breather with a hose going to the air cleaner. Not saying impossible but show me a pic. surely if you bought it new you have some underhood pics?
Road draft tube listed (6758) in the parts catalog for 1965 352, but it's not listed for 1966 or later.
----------------------------------------------------------------------------------------------
Stripper Escape S comes with 2.5L, Escape SE comes with 1.8L Eco as standard equipment, 2.0L Eco optional.
I didn't want a stripper, didn't want the upscale Titanium model either due to moon roof which cuts down on headroom.
5 year powertrain warranty: I doubt I'll have it 5 or even 3 years. I buy something new every one or two years.
F150 went away after 21 months with 7,100 miles on the clock, because it had become ergonomically undesireable.
btw: Ever see a 1966 F100 240/300/352 with a smog pump (basic number 9A486)? Mandatory in sold new CA F100's.
OP asked about PCV routing. If a 1965 F100/350 352 came with PCV, it didn't have a road draft tube in the right valve cover, because this is where the smog valve is installed.Show me anything in the ford parts books indicating any smog on a 1965 F100/350 truck, I do not think your 1965 352 had a breather with a hose going to the air cleaner. Not saying impossible but show me a pic. surely if you bought it new you have some underhood pics?
Road draft tube listed (6758) in the parts catalog for 1965 352, but it's not listed for 1966 or later.
----------------------------------------------------------------------------------------------
Stripper Escape S comes with 2.5L, Escape SE comes with 1.8L Eco as standard equipment, 2.0L Eco optional.
I didn't want a stripper, didn't want the upscale Titanium model either due to moon roof which cuts down on headroom.
5 year powertrain warranty: I doubt I'll have it 5 or even 3 years. I buy something new every one or two years.
F150 went away after 21 months with 7,100 miles on the clock, because it had become ergonomically undesireable.
btw: Ever see a 1966 F100 240/300/352 with a smog pump (basic number 9A486)? Mandatory in sold new CA F100's.
I have not seen a SINGLE 1965 F100-350 with a 352 that had smog. All the original ones I have seen had a breather tube. I am not arguing the fact or saying california 352's had a breather tube but believe other states did. In fact I own a 1965 non-california that has a breather tube.
I am surely open here what had what but everything I have seen indicates as above.
Look at ANY air cleaner for a 65-66 352 and none of those seem to have a nipple for hose to breather. I do have a 1966 F100 300 air cleaner and it DOES have the nipple.
So if you owned your truck for 30+ yrs then restored it I would like to see a pic of breather or air cleaner or even smog.
For some reason there does not appear to be a pic of the 65-66 352 Air Cleaner assy in the parts illustrations.
Edit add: I did find a pic of a 1966 F 352 Air Cleaner and breather with hose but nothing for 1965. Appears to be a california only thing for 1966.