Riz’s comments are pretty well dead on. As far as I’m aware, there are no Holley 94 carbs with a dedicated ported vacuum source.  But only the center carb needs the modification in which to convert it for use with the later model distributor if wanting to use the vacuum chamber during cruise situations.  On the flip side of all this, the mechanical advance on the ’57 and later distributors can be recurved so that the vacuum advance chamber is no longer needed thus doing away with the need for a ported vacuum source.

Lorena, Texas (South of Waco)

As far as the dizzy I have a Mallory centrifugial, it works pretty well as of you are going with orig 94s they do not have vacuum ports. The progressive set up I cobbled together some parts like swayed tubes stops etc on the cheap. Vintage speed has a lot of the parts but Charlie is pricy, but the stuff is decent. As I said before I blocked the Power valves on the outer 2 and upped the jets to compensate I am running a 52 on the primary and 57 on the outer. The primary PV is a 5.5. I still need to tune as the 94s and the PV that gives best tip in 6.5 floods low and the best in mid (4.5) leans out on the highway-i spilt the difference.they also do not like more than 2.5 psi or they leak so get a pressure reg They are also prone to heat soak with modern fuel. It is not really bad but I will tell you it takes some tweaking as the only constant I have found is every set up has its own personality there is no right answer, as each manifold sets up different, cam, fuel, engine, condition, air filter, etc.



PM me if you have more questions as I am no expert, but have made a lot of mistakes. It is definitely more work, but when you get it right it is bad ass.

Mike Rizzo

1963 F100 "Rudy"

Daniel Island, SC

Do any of the 94/2100 carbs have ported vacuum for the vacuum advance. I know Ted has an article on his site explains how to modify for ported vacuum advance. i was just wondering if any came stock in that configuration.



I know there are some Stromberg bases that have ported vacuum but they are very rare. I was just wondering if any 94/2100's came stock in that configuration.



Otherwise you will have to modify your primary carb, use manifold vacuum or run full mechanical advance.

As far as a distributor you can order a rebuilt unit at your local parts store.1964 Ford F100 with 292 is the application.Shop around as price varies and most come from the same supplier-Carcone.The reason you must change it is because the original is a vacuum advance only unit and works only with the original carb.The later unit is centrifugal and vacuum advance equiped.Much more responsive to ngine load and speed.

  

O yeah and is there a manual or site that can tell me how to set it up to where I can have it be progressive and/or get good fuel efficiency when crusing but if I need to step it up the the other two carbs will open up? Sorry I am kinda new to the tripower setups guuys

Ok well it sounds like I have a lot of differnt variations. But it sounds like the best bet would be a edelbrock 573 and I plan on changing the cam and running g heads. Before I do that I guess I need a distributor from a 57 but my question is does it have to be from a truck?.

I also have the offy running original Holley 94s and would also recommend teds 3x2 post and testing. I have g heads on an oterwise stock 292. There is definately more HP in the edelbrock or even fentons. However if you do not plan to swap out the cam etc you will be leaving a lot on the table anyway. Also if max HP is your goal there are way better 4bbl set ups than the 3x2. I got the offy for a good price and figured if I ever found an edelbrock for the right price it would be an easy swap. Most edelbrocks I have run across in decent nick the seller is wanting $5-800. For that money I figure I would be getting most of the way to a rebuild, cam, etc. even the offy is good for about 40-50 HP over stock which is nice for a street machine. I have the PVs on the outer 2 blocked and run a progressive so I can get 14-16 mpg if I keep my foot out of it, but have the progressives open it will get up and go.

Mike Rizzo

1963 F100 "Rudy"

Daniel Island, SC

lawdog:

For best results with any tripower manifold, the '56 distributor needs to be replaced with a '57 or later unit.  This has been discussed many times on this forum, do a search.

John - "The Hoosier Hurricane"

I've got the Offenhauser 3 deuce with 94s on my 55 Vickey with the 272, when the hood goes up its oohs and aahs at all the shows. On the highway when I go to pass someone I can feel the outer deuces open up and the pass is done easily. Although it won't impress at the dragstrip, for what I want it for it does the job and then some.

       

Gary, 55 Vicky, St. Germain, Wisconsin

 

As noted go back and find our moderator Ted's test of Tri power setups. In any case do not buy an Offenshauser intake, it's a very poor performer.

Paul