Another intake manifold question

T

tommyleea

Senior Member
55 F100..272..What is that post sticking up behind the carb?? Thanks
 

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The photo isn't real clear. Is it solid or is it a tube? Hard telling if someone added something there or not. A tube could have been for a windshield wiper. I've looked at a few of those ECG 9425-H manifolds and none of them have that sticking up there. Those manifolds were good to use the later 4-bolt carburetor on Y-block applications as long as the ports are a decent match. They were a 1957 part if I remember correctly. The load-o-matic distributor can be pitched and the 57 or later distributor can be used.
 
Vacuum source makes sense. Doesn't seem to open to vacuum, but it might just be plugged up. I don't know how it is attached, and am afraid to mess with it too much. Don't know if this picture will help any or not. Thanks..
 

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If you pitch your Loadomatic distributor as rotorwrench suggested, please pitch it my way.
Also, all large pattern two barrel manifolds from 1957 up have the larger ports.

Sal
 
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If you don't need it and it's at least plugged so it won't be a big vacuum leak then I wouldn't worry too much about it. The Autolite 2V carbs weren't bad units but is certainly won't run a load-o-matic distributor. The later distributor may work OK with an Autolite if it's a Ford set up. The later automatic spark control stuff is somewhat easier to get parts for and works a bit better. The flatheads worked OK with the load-o-matics but the Y-blocks, not so much. They were fine for the limitations of the 239 & maybe 256 CID engines but as they grew in size and compression, they needed more range than the load-o-matic could provide.
 
Well, whatever that is sticking up back there is not original, but as long as it is not sucking vacuum, you could just leave it. But I would hook a vacuum guage up to it with engine running to make sure it is not pulling vacuum. If it is you can plug it with a tapered rubber plug available at your local hardware store.
Your old load-o-matic distributor is not compatible with the '57 and later carburetor. See if you can get a '57 or later Y-block distributor. They have mechanical advance and the vacuum canister is designed to work with that type of carb.
 
Well, I did some more checking today, and it appears that the tube is open to the manifold. I will hook up a vacuum gauge next time I start it up. I wonder how it is connected to the manifold? Anyway, thanks for looking, and your inputs. Cheers.
 
tommyleea said:
Well, I did some more checking today, and it appears that the tube is open to the manifold. I will hook up a vacuum gauge next time I start it up. I wonder how it is connected to the manifold? Anyway, thanks for looking, and your inputs. Cheers.
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Where is the vacuum line to your distributor ? It's missing in the picture. Since some have brought this up you should give this a read: http://m571.com/yblock/loadomatic.htm
 
The manifold he has is of later manufacture than the load-o-matic system. A lot of the 4-bolt carbs were for trucks in that time frame. The number on it is a casting number so it's a bit harder to pin down to a specific application. My books only list the part numbers and they are later books so they only list the replacement manifold part number equivalent. I guess I need to get a truck book in the 1956 to 1959 range if there is such a thing. My truck book stops at 1955.
 
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