Quote:
Even a stock engine likes the 350 cfm Holley once dialed in 220 cfm is in between the North American 1 barrel Holley and 2 barrel Carter BBD....
-D.Idiot
Don`t get it... -D.Idiot
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| CFM question... https://slantsix.org/forum/viewtopic.php?t=50825 |
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| Author: | fede-valiant [ Mon Jan 14, 2013 11:44 am ] |
| Post subject: | CFM question... |
Hi, I´ve sent a mail to Holley, asking about the CFMs my carb has. I gave the numbers and the answer was 220 CFMs... Now, I want to know if that number of CFMs will work fine with the long ram manifold (the Aussie Hurricane) that Im about to get. Could anyone give me some help? |
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| Author: | DusterIdiot [ Mon Jan 14, 2013 3:33 pm ] |
| Post subject: | A little more wouldn't hurt... |
Even a stock engine likes the 350 cfm Holley once dialed in 220 cfm is in between the North American 1 barrel Holley and 2 barrel Carter BBD.... -D.Idiot |
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| Author: | fede-valiant [ Mon Jan 14, 2013 5:04 pm ] |
| Post subject: | Re: A little more wouldn't hurt... |
Quote: Even a stock engine likes the 350 cfm Holley once dialed in 220 cfm is in between the North American 1 barrel Holley and 2 barrel Carter BBD....
Don`t get it... -D.Idiot
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| Author: | DusterIdiot [ Mon Jan 14, 2013 5:34 pm ] |
| Post subject: | See Reed's comment in this thread... |
http://www.slantsix.org/forum/viewtopic ... +super+six See this thread. -D.Idiot |
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| Author: | fede-valiant [ Mon Jan 14, 2013 6:43 pm ] |
| Post subject: | Re: See Reed's comment in this thread... |
Quote:
Thanks! Ill read it.  My question is the CFMs in relation to the Aussie Hurricane. |
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| Author: | Joshie225 [ Tue Jan 15, 2013 8:13 am ] |
| Post subject: | |
The manifold doesn't matter much when choosing a carburetor so long as the carb will bolt to the manifold. A 350 CFM Holley 2 bbl is a pretty good choice whether you're adapting it to a stock 2 bbl intake manifold (I did this in High School over 20 years ago) or an aftermarket manifold. |
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| Author: | DusterIdiot [ Tue Jan 15, 2013 10:55 am ] |
| Post subject: | But... |
Quote: The manifold doesn't matter much when choosing a carburetor so long as the carb will bolt to the manifold.
I would only beg to differ on this as the hurricane is going to increase the plenum volume significantly over stock manifold causing some other problems in the process (running the carb richer to make up for fuel puddling, vacuum would be kind of 'peaky' causing quick drop offs of vacc. along with fuel falling out suspension when the go pedal is pushed with the possibility of the power valve opening up more often, he may also need to set curb idle rpm to about 1000-1200 to keep it happy going light to light as well). I'd be curious to see test data on a Carter BBD/Holley 2280 bolted to a hyperpak and stock engine...The holley 350 cfm 0-7448 I do agree would be a good start in that direction, the 500 cfm 0-4412 might be better as the throttle plates don't have to be open as much to get things moving. 2 cents- -D.Idiot |
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| Author: | Joshie225 [ Tue Jan 15, 2013 11:34 am ] |
| Post subject: | |
From a CFM standpoint the manifold won't matter much. There are other considerations of course. Having enough accelerator pump shot to handle the plenum volume is one such consideration, but the question was CFM for a given manifold which is really not all the relevant. |
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| Author: | fede-valiant [ Tue Jan 15, 2013 12:23 pm ] |
| Post subject: | |
Thank very much to all of you. Your experience are very useful to me. My actual carb, the one I will use with the hurricane, is a 220 CFM Holley. |
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| Author: | Joshie225 [ Tue Jan 15, 2013 1:00 pm ] |
| Post subject: | |
What model Holley is this? |
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| Author: | fede-valiant [ Mon Jan 21, 2013 2:03 pm ] |
| Post subject: | |
Its a 2 barrel 2300 Holley, 220 CFM. Its the carb that came in the olds v8 f100. |
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