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1BBL CFM rate?

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Old Mar 4, 2004 | 08:48 PM
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1982fordf100's Avatar
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1BBL CFM rate?
How many cfm's does the stock 1BBL carb flow?
 
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Old Mar 4, 2004 | 09:14 PM
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Carter YFA -- about 215 But measured differently than 4 barrel, so not comparable. Actually even less!!
 
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Old Mar 6, 2004 | 03:07 AM
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They also should vary according to engine size. IE: a 240 should normally be metered a hair less than a 300. I've got these specs somewhere, but probably take me a month to find em... MK
 
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Old Mar 6, 2004 | 06:19 AM
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Depending on how you measure it, it is either 55 or 110cfm. Both the 240 and the 300 used the same carb.
 
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Old Mar 7, 2004 | 08:07 AM
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The following site may help: http://www.geocities.com/mustang_man...r_yf_carb.html
 
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Old Mar 8, 2004 | 07:58 PM
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Why did they use such a small carb. on these engines, if you can pull off a 500cfm edelbrock?
 
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Old Mar 8, 2004 | 08:30 PM
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gas milage and low end torque. The 300 was the economy engine, and still does better than my 00 oil burner.
 
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Old Mar 9, 2004 | 04:06 AM
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The 300-6 was originally an industrial engine, for running wood chippers, gensets, etc. The cfm is just about perfect for running a constant 3,000rpm, right between the torque and hp peaks.
 
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Old Mar 9, 2004 | 10:17 AM
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mmmMM! Lets see, 300 cu in displacement divided by 1728 = .1736 cu ft displacement X 3000 rpm = 520.8 cubic feet per minute
But it takes 2 revolutions for all six to fire 520.8/2=260.4 cfm of air sucked thru the carb @ 3000 rpm.
 
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Old Mar 9, 2004 | 10:17 AM
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From: Meggett SC
mmmMM! Lets see, 300 cu in displacement divided by 1728 = .1736 cu ft displacement X 3000 rpm = 520.8 cubic feet per minute
But it takes 2 revolutions for all six to fire 520.8/2=260.4 cfm of air sucked thru the carb @ 3000 rpm.
 
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