That manifold must have been in use in California in the late 60's or 70's. All 1955 and newer cars had to have a PCV system added if they didn't come with one. Those holes were drilled and vacuum tees installed. Usually they are not tapped and the tees were driven into place. In some cases the vacuum hose went to a PCV valve attached to the top of the road draft canister. In some cases grommets were added to the valve covers and vacuum hoses run to the covers.The road draft tube was closed off, usually destroyed. Often they were crimped shut and the end folded over. Finally, a closed off cap was placed on the fill tube in the valley cover. Gotta love californiaThe holes can be tapped to 3/8" pipe and short pipe plugs screwed in.

http://ford-y-block.com 

20 miles east of San Diego, 20 miles north of Mexico

I have a 54 Merc intake # EBY-9425-D. Let me know if still looking for 1

tom in iowa

54 Merc wagon

54 sunvalley

Ol ford guy,

You aroused my curiosity with your picture.

Soooo, I went and looked at several intakes, tea pot and regular holley base intakes.

I have one which is a tea pot type like yours shown.

It has one hole drilled in the back as yours has, no hole drilled in the front though.

To add>> the boss in the front of the intake, rounded and not drilled in your pic, mine has a small hole drilled into that boss.

I can think of no ford car which would have the holes for any accessories, as the brass blocks usually supplied vacuum to them.

Sooo, perhaps what we both have is something which was truck oriented, just a guess???

They did have governors and other vacuum needs beyond passenger cars???

John

Is this the worlds first exotic automobile? The 1935 Harris fwd speedster, No heavier, higher, wider, taller or longer than an AC Cobra, but many many decades before.

http://www.autopuzzles.com/forum/index.php?topic=11958.0

Looks to be additional vacuum ports which could have been used for anything from supplying vaccum for power brakes, windshield wipers, gauges, etc.

Lorena, Texas (South of Waco)

The manifold I have is an ECZ9425A, which you already have. It has 2 holes drilled in it. Does anyone know why these holes may have been drilled in the manifold? I wonder if it is of use to anyone. I will attach a picture.



Paul J. - '57 E Code

I have a garage ful of 54 Merc stuff, I will check to see if I have 1 left

tom in iowa

54 Merc wagon

54 sunvalley

13bravo:

The '54 Merc manifold casting number is EBY-9425-D. Sorry for the delay,I had to remember where I had the information.

John - "The Hoosier Hurricane"

Do you happen to know the casting number on that manifold?

As for the 3x2 setup the owner doesn't want to go that route for some reason or other.

If I had known the problems I have run into beforehand I would have talked the owner into going a different route.

13bravo:

What you are looking for is a '54 Merc manifold. Good luck.

John - "The Hoosier Hurricane"

I have an early 4 barrel intake. It has been hot tanked and preassure tested. It has an extra tapped hole on top, probably for a vacuum gauge. It could be used or plugged. I could check the part number tomorrow and send you a picture.

Paul J. - '57 E Code