Can a 409 run with just 2 holley 94's?

I actually have a 6x2 intake but only have 2 good carbs. So for now I was thinking of running it on the two center carbs and block off the rest. I think I read somewhere that a 94 was about 150 cfm and I don't know if 300 cfm total is enough. Thoughts? Thanks

 

At idle yes.. A little throttle ...no. Google a volumetric efficiency formula and figure out the rest. Don't do it the heads will not like it and not to mention it a 409. Not like I have one growing off my ***.

 

Should get good miliage. A carburator is most eficiant at full throttle and you will be at full throttle a lot.

 

LOL..... But its true

 

It would be like trying to breath through a swizle stick

 

I have 2 stromberg 97's on a 350CI Chevy motor....sort of like restrictor plate racing. Total CFM is around 360CFM...

 

yeah you will have no problem running the engine but when you get on it you will notice she will lean right out. At the price of gas today i would not run 6 carbs but im poor and many would say run all 6 but I would only run the 2 centers. Its opinion but the engine will not be running at its full potential and if you are ok with that go for it.

 

For some reason I keep thinking about that commercial with the teenage girl ****ing J. Timberlake all the way across town through a flex straw...
That's some serious ****ing!

Ford ran one of them on 239"
Two on 409" would be about the same feeling of "trying to **** itself up it's own tailpipe" but it'd work.

 

I know this one cant!!!

 

Carefull... That's my next girlfriend your talking about there.

 

Seems to me I remember Chevy coming out with a Rochester 2G on top of a 406 lo po engine in the early 60's from the factory with only 280CFM and it did fine as I have a buddy that had one for about 4 years. Not a barn burner but ran fine for a cruiser with NO issues as far as fuel starving or leaning out.

 

How do you figure that??? unless its already jetted lean

 

I forgot to mention the 409 is bone stock if that matters.

I'm running 6 two's on my sbc powered sedan. I have all carbs functioning with progessive linkage but the four outside carbs have the idle circuits blocked off. So the center carbs do all the work till about 3/4 throttle. The reason I asked about the 409 on 2 carbs is my sedan seems to run rich at idle anyways so I thought it may be enough for the big fella, but I understand about the w.o.t. thing.

 

Ford made a 538 cube truck engine with a single 48 on it. An acre of manifold with this piddly little three bolt mixer way out in the middle!
Your engine will certainly run with the two, It won't be any fire-breathing dragon, but it will run as good as it would with all six, until you floor it.

 

I'd think not well at all!...but you won't get many speeding ticket! LOL

 

I used to try to convince the guys that ran 409s against my 406 that it could be done. Only one taker though...some guy named Forest.

 

When talking carb CFM,keep in mind that 2 barrels are rated different than 4 barrel carbs.A 280 cfm 2 barrel for example flows about 200 cfm is rated like a 4 barrel.The conversion is 1.4 times 4 bbl cfm to get the 2 bbl cfm and about .71 times 2 barrel cfm to get 4 bbl rating.These are approximate values that vary slightly depending on who mentions them.
Anyways,2 little Strombergs,if jetted correctly will run ok on the 409 up till maybe 4000 rpm when the power will flatten out.

 

Ok I did a little work and came up with this.

409 cu inch, max rpm 5000,
Volumetric efficiency 85% (being very,very generous)
Manifold efficiency 80% (being just stupid) I mean a 6 deuce intake!
628.7 cfm.. The less efficient the manifold is the more cfm you will need..

 

How many answers would there be if those who don't know what they're talking about remained quiet?

A lot less.

 

Would you like to clarify for us who is wrong and who is right?