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69a · 03-01-2026, 04:14 PM

I have a 49 F1 with a stock flat .100 over and Edelbrock heads. stock cam. I have 2 deuce on it now but only running on 1 carb. I am going to get the other carb functioning. Running Holley 94's. I was wondering what jets and what power valves most found that work? Do you set both carbs. the same jetting and power valves? I am 2300 feet elevation.

The question has been asked, what distributor are you running.
You cannot use the original Fordomatic distributor if you are using multiple carburetors.
This is because the venturi vacuum is the only way the advance system works. It has no mechanical advance. If you are using 2 X 2 carburetors you have reduced the signal to the distributor by around 50%. There are several different solutions to this, but you need to let us know what distributor you have at the moment.

03-01-2026, 04:14 PM	#15
69a Senior Member Join Date: Aug 2020 Posts: 321	Re: 2x2 on 8BA flathead I have a 49 F1 with a stock flat .100 over and Edelbrock heads. stock cam. I have 2 deuce on it now but only running on 1 carb. I am going to get the other carb functioning. Running Holley 94's. I was wondering what jets and what power valves most found that work? Do you set both carbs. the same jetting and power valves? I am 2300 feet elevation. The question has been asked, what distributor are you running. You cannot use the original Fordomatic distributor if you are using multiple carburetors. This is because the venturi vacuum is the only way the advance system works. It has no mechanical advance. If you are using 2 X 2 carburetors you have reduced the signal to the distributor by around 50%. There are several different solutions to this, but you need to let us know what distributor you have at the moment.