60 cad intake manifold

[mikecad57]

ON THE FRONT OF A 60 CAD INTAKE MANIFOLD THERE IS A VACUUM PORT WITH A BALL CHECK VALVE. dOES ANYONE KNOW WHAT THIS IS USED FOR? i HAVE THIS MANIFOLD ON A 58 365 ENGINE & i NEED TO KNOW WHERE TO RUN LINE FOR VAC ADV FOR DISTRIBUTOR. ANY HELP THANX mIKE

[Walter Youshock]

The vacuum advance port should be on the carburetor.  There is a brass fitting for, I think, a 3/8" metal line.

The one on the manifold was for the wipers.  That line should be 1/4".  BOTH lines turn down and run UNDER the intake manifold.  The one for the wipers runs through a bracket on the rear right side of the intake on the large rear mounting bolt.

I'll try to get some photos.

[Coupe]

The port with check valve is for vacuum to the brake booster.

[Walter Youshock]

Paul,

On your '57, is your brake booster bort on the back of the carb or does it come right out of the intake manifold?  I've seen both types, but there doesn't seem to be any breakdown as to when they used one or the other in production.

[Coupe]

Mine comes right out of the manifold in front of the carburetor. If I remember correctly it is on the runner to #1. Also going from memory, the port for the vacuum advance comes off the top of the manifold in front of the carb and runs under the manifold back to the distributor. If carburetors make the difference I have a Rochester 4GC on mine.

[Walter Youshock]

I have both a Rochester and a Carter.  On the throttle plate, you should have a rather large brass plug in the back.  That's where my booster port is.

As for the advance, that comes from the front right side on the Rochester and on the right between the first and second intake ports.  My wiper port is on the top center in front of the carb--a 90 degree brass fitting that the line screws into.

[Coupe]

Walter, you are cotrrect regarding the wiper and advance ports. I dug out my notes and pics from tear down and found a very good picture of the booster and wiper ports but my scan was too large to attach. Apparently this pic was still on a floppy disc and I do not have a floppy drive anymore. I found the attached pic on a CD that shows the booster port between the fuel filter and the power steering return line.

[mikecad57]

ON THE FRONT OF A 60 CAD INTAKE MANIFOLD THERE IS A VACUUM PORT WITH A BALL CHECK VALVE. dOES ANYONE KNOW WHAT THIS IS USED FOR? i HAVE THIS MANIFOLD ON A 58 365 ENGINE & i NEED TO KNOW WHERE TO RUN LINE FOR VAC ADV FOR DISTRIBUTOR. ANY HELP THANX mIKE
I guess I need to be a little more descriptive . In front of the Carter carb (60 Cad) there is a small 1/8" tubing that curves downward out of a larger fitting. You would not know that this fitting has a check ball in it unless you took it apart. It's way too small for the power brake booster. I don't think I can use this port for the vac. adv. because of the check ball. thanks for the feed back MIke

[Walter Youshock]

The advance line should still come off the carb, not the manifold.  I can't imagine what the other port was used for.

You have a '60 manifold on a '58?  '58's had vacuum wipers (last year).

[Dan Marinola]

The port in question had a vacuum line attached to it that goes to the heater defroster lever under the dash. It is used to operate the bellows for the heater and if so equipped the A/C bellows on an air conditioned car. This would be for a 1959/1960 car. I dont know what or where it would be used on a 1958,but possibly the same thing.

[paul]

Dan is correct. I have only seen this on 59 60 cars. There isi a thin vaccume line that goes to the heater defroster. On non ac cars there is a bellows on the front of the heater box under the hood.

[mikecad57]

The port in question had a vacuum line attached to it that goes to the heater defroster lever under the dash. It is used to operate the bellows for the heater and if so equipped the A/C bellows on an air conditioned car. This would be for a 1959/1960 car. I dont know what or where it would be used on a 1958,but possibly the same thing.
dan / paul  thanks for clearing up the mystery check valve , now for my next question where should I hook up my vac adv for distributor? On my old manifold The 58 the metal tube went under manifold from in front of carb to the dist. with this one I can either go from rear of manifold or do away with check valve & go in at that location .

[Walter Youshock]

No.  The vacuum advance line was on the carburetor--not the intake manifold.

[paul]

walter is correct it is routed like your 58 under the manifold and connects to a female brass fitting on the carb.

[Tony472]

The smalll line from front of the manifold on a 1960 car supplies A/C and vacuum release of parking brake !

[59-in-pieces]

Second try - diagram too large to attach

Mike,
What is a 60 manifold doing on a 58.

The previous comments seem to be directed at how the 60 manifold had ports or not that some how match the needs of the 58 - and the simplest answer is that they don't.

But to answer the first question, see the diagram below and you will see the vacuum fitting with the check valve at the right front of the 59/60 manifold is for the A/C & heating - not the brake booster or the distributor.

Hope this helps.
Have fun,
Steve B.

[Dan LeBlanc]

This topic is over 9 years old.  I'm pretty sure this has been sorted out by now - most of the respondents in this thread are not even forum members anymore.

[59-in-pieces]

Dan,
Thanks for the head's up.

I feel foolish.
No good deed goes unpunished.

Have fun,
Steve B.

PS
How do these posts get resurrected.

[35-709]

Often get resurrected by new folks researching past posts looking for information, advice, or parts.  Or, as seems to be the case here, to give advice.   

[59-in-pieces]

35-709 (with no first name),
So, Tony is the first helpful culprit; and, I'm the nearsighted sheep.
Who said this forum isn't loaded with helpful folks - even if the responses go out to years old echos.

Have fun,
Steve B.