All is not always as it appears.

looks like it's a modified 94 to me. helluva good idea. take some machine work but it'd definitely be something nobody else had.

P1010127.jpg
 
It is a 94 8BA or later as it has the vacume port in the rear. I cant see any advantage over stock. Must have been a bugger to make the butter-fly plate fit right. OMO ken ct. A lot of work for nothing gained. Most likely a 48 truck base as it has the vac port but still has the provision for the throttle lever on the drivers side which only happened on 7HT and 8HT carbs.Kind of an odd base.
 
I have seen similar large butterflys on 4 barrel carbs that flow huge amounts of air. To gain airflow when you run this you would also need to machine the divider out of the manifold. With both the carburetor and manifold modified, it should flow a noticeable amount more air a wide open throttle, but will probably have lean mixture problems coming off idle.
 
Venturi size is not the only thing that determines air flow. Friction with the walls of the carburetor and intake manifold along the whole passage are a very large player in how much air flow can be had. If you put the modified carburetor on a flow stand I would bet money (if I was a betting man) that if flows quite a bit better than a stock 94. In order to use this you would have to have a manifold that also could flow more, or the modification is useless. Also, the center section might be the larger bore Y Block carb.

I also would bet that someone got their inspiration for this from the old Holley 3 barrel carb.
 
I bet performance at low speed is dismal due to loss of the venturi effect. It would be interesting t see the rest of the carb. I'm mostly guessing. Appreciate any thoughts along that line.
 
I was refering to flow through the carburetor. However I don't see much improvement in performance either. But I like the idea of experimenting to find a better way.
 
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