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06-04-2006, 06:53 PM
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#1 |
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Active Member
Join Date: Mar 2004
Location: Virginia
Posts: 169
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Q-Jet CFM
Are all stock quadrajets 750 CFM? It may be a dumb question, but it seems the only new/rebuilt q-jets I look at buying are 750 CFM. Are there any smaller ones out there?
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71 Blazer CST 72 K20 Capt USAF |
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06-04-2006, 07:41 PM
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#2 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Q-Jet CFM
750 is the smallest one they made as far as I know.
The bigger engines got a 850. |
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06-05-2006, 01:33 AM
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#3 |
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Senior Member
Join Date: Nov 2005
Location: northwestern wi
Posts: 2,111
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Re: Q-Jet CFM
di don't know this to be true but i've heard that they were made up to 925 cfm. anybody know if this is true?
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common sense isn't so common anymore |
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06-05-2006, 05:17 AM
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#4 |
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Registered User
Join Date: Aug 2005
Location: Surrey , BC, Canada
Posts: 83
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Re: Q-Jet CFM
really, I thought 750 was too big for a stock 350?
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06-05-2006, 06:47 AM
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#5 | |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
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Re: Q-Jet CFM
Quote:
They are all 750 except some 800 cfm units that were used on Caddys and big blocks. Because of the design of the secondaries, they are operated by engine demand (airflow, combined with low vacuum) and the 750s are suitable for use on smaller engines with no problems. The 750 cfm carbs were used on some 305s iirc.
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