Holley Indentification
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Senior User
Joined: Jan 2010
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From: Great Falls, MT
Holley Indentification
I need to find out if my carb is the 500cfm verison of the Holley 2300 series, or the 350cfm verison. The computer I'm using won't open any pdf files so the holley parts guide won't open and I can't find anything else to help me out. I figured some of you might be able help. LIke Builit 390 or NumberDummy might know but any help is appreciated. 
Hotshot
Joined: Jun 2010
Posts: 11,424
Likes: 2
From: Big Sky Country
If you wanted to post the number I can check through some of my reference material, otherwise give Holley Tech a call at 270-781-9741. They have excellent support and can give you all the info you need on the carb.
On a side note, its nice to see someone else from Great Falls.
On a side note, its nice to see someone else from Great Falls.
Posting Guru
Joined: Sep 2003
Posts: 2,313
Likes: 12
From: Northeast LA
I have the 500 cfm model on my truck and I know the accelerator pump diaphragm on the 500 is 50cc and on the 350 cfm it's only 30cc. You can definitely tell the difference in them by looking at them the 50cc is much deeper. Just my .02
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Senior User
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From: Great Falls, MT
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Post Fiend
Joined: Sep 2006
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From: Island Southeast Alaska
Morning Dom. They should be able to tell ya what ya got with that number. They did with mine and I was able then to get a kit for it.
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Hotshot
Joined: Feb 2004
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From: The Shenandoah Valley
Yep, 500 cfm.
Holley Performance Products 500 CFM Two Barrel Carburetor 0-4412C
Features
•Manual choke
•50cc accelerator pump
•1 timed (spark) port, 1 full vacuum, & 1 PCV port
•Intended as stock performance replacement for 2-bbl street applications. Also mandated carbs for some oval track racing sanctioning bodies
•Ford A/T kickdown, does not work with A.O.D. transmissions
http://www.holley.com/data/Products/...R7950-7rev.pdf
Holley Performance Products 500 CFM Two Barrel Carburetor 0-4412C
Features
•Manual choke
•50cc accelerator pump
•1 timed (spark) port, 1 full vacuum, & 1 PCV port
•Intended as stock performance replacement for 2-bbl street applications. Also mandated carbs for some oval track racing sanctioning bodies
•Ford A/T kickdown, does not work with A.O.D. transmissions
http://www.holley.com/data/Products/...R7950-7rev.pdf
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