First off i have a NOS vacuum advance coming in today, i assume the only testing is to see if they pull a vacuum and hold vacuum correct?

Secondly, how do these lines attach?

Im reading my holley pressure type dist service manual that came in today reprint of the august 1955 issue, it doesnt show vacuum routing nor a diagram of a dual reservoir but it does state there are two vacuum lines one that is ported vacuum that has a passage jhst above the throttle plates and the other goes to the side of the carb for the spark delay valve.

But the brass elbow i got i was informed has the ferrell line goes to the dist and the flared line goes to vacuum for the wiper motor or to the dual diaphragm fuel pump. This would be manifold vacuum.

Is this the correct hookup for this on a 56 with the correct holley 4000 carb?

Want to make sure cause this service manual is implying the dist shouldnt be manifold vacuum but only ported vacuum.

1956 Ford Fairlane Town Sedan - 292 Y8 - Ford-O-Matic - 155,000 mi

I got the heat tube hammered out just 20 minutes ago took half an hour, think maybe the elbow that was broken off in the tube is what hindered me.  tube split in two and I had to hammer it out the wrong way and bend it to get the pieces out.

The new Casco heat tube it slipped in only goes in one way it slipped in silky smooth to the shoulder stop.  I am assuming when I hammer the brass elbows in it flares the tube out and creates the seal to the intake manifold.

Only thing I am wary of is how to attach the tubes to the elbows cause you don't naturally want to hammer on tubes for fear of warping them or bending them.


1956 Ford Fairlane Town Sedan - 292 Y8 - Ford-O-Matic - 155,000 mi

The elbows should fit into the tube easily, at least mine did (tube from CASCO).  As far as the the tubes that go into the fittings (elbows) they should fit without having to bang anything (again, that is my experience, with aftermarket parts even). Regarding the choke tube, first put in the elbow in the intake - I have found that the tube for the automatic choke should first be put on the choke but loosely.  Then as the carb is lowered onto the intake line up the tube to the elbow.

On the other side, put the tube on the elbow and as you are lowering the carb line the tube up with the opening.  There is a rubber o-ring that goes on the carb.

Test fit the tubes into the elbows and the elbows into the manifold tube for a trial fit  while everything is readily accessible. In my experience, everything should go into each other without any real force.


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

What about the heat tube itself?  I was able to press it in with finger pressure all the way to the seat.  What seals that to prevent an exhaust leak around the tube?  that's what I am curious about if the elbow will flare the heat tube out to make it fit snugly.

That's good to know about the inlet and outlet tubes so they just press in by hand and don't have to be forced.


1956 Ford Fairlane Town Sedan - 292 Y8 - Ford-O-Matic - 155,000 mi

I had to replace the tube in the intake, but I don't remember how tight it fit. 


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

Ah ok just wondering cause the old one I had to really hammer it out but I haven't tried to fit the elbows yet want to first clean the intake up with carb cleaner then do my dry fit assembly before I brush paint the manifold.  Im hoping that the elbow will open up the heat tube some to create a seal.  Otherwise I am afraid there will be an exhaust leak from how easily it slipped in with finger pressure.  Unless that's how its supposed to be and it wont leak with it like that.  I don't know.

I also got my new inlet tube from Larrys, its a Tasco just like the one I got 2 years ago from Macs, this one how ever is bent correctly to where it will fit into my carb and sit on the manifold.  This one is also a bit taller on the second bend compared to the one I had.  Don't know if it was a error or something that slipped through quality control from tasco but I now have everything I need to do this.  Going to do it this weekend.  Will assemble my intake tomorrow after work so I can brush paint it ford engine red and let it dry over night then Saturday I will drain my coolant pull the intake off and install all my new stuff.  I just hope I can do everything at once if not I might have to play with the choke sunday cause my main goal is to adjust the timing to 12* initial if the engine can handle it then set the idle mixture.

only worry I have is on my dual action fuel pump I am a bit worried that the vacuum hook up wont be correct.  Currently the inner most tube is set to manifold vacuum as the outter most tube has suction with the engine running.  If its not right well then I might have to just break down and buy another fuel pump as I must have rebuilt this one wrong then.


1956 Ford Fairlane Town Sedan - 292 Y8 - Ford-O-Matic - 155,000 mi