edelbrock carb?
Freshman User
Joined: Oct 2002
Posts: 32
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From: Flin Flon Can
edelbrock carb?
I'm thinking about buying a new edelbrock performer carb, and was just wondering what cfm to buy. I have a 76 4wd,390,at,edelbrock perf intake,and rv cam. I've heard that these carbs are fairly economical for a perf carb ie:gas milage,is this true?
Laughing Gas
Joined: Jul 1999
Posts: 1,048
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From: Lacey, WA
edelbrock carb?
Hi,
I will take a stab at yer question. I will say 600-650cfm, Vac secondary. I have seen a formular for computing Carb size but can't recall it correctly. Do a search on Yahoo.
Lee
I will take a stab at yer question. I will say 600-650cfm, Vac secondary. I have seen a formular for computing Carb size but can't recall it correctly. Do a search on Yahoo.
Lee
Elder User
Joined: Oct 2002
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From: Seattle/Tacoma Washington U.S.A.
edelbrock carb?
[updated:LAST EDITED ON 25-Dec-02 AT 03:02 AM (EST)]How About Me? I have a 77 F-100 Coustom,Stock,Shortbox. With a small block V-8? What CFM Would everyone recomend??
Posting Legend
Joined: Sep 2001
Posts: 30,255
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edelbrock carb?
For a 390 or 400 on the street use a 600 cfm or a #1406 Edelbrock with electric choke.
Rough rule of thumb:
Engine displacement in cubic inches times 1.5 = CFM
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Rough rule of thumb:
Engine displacement in cubic inches times 1.5 = CFM
Thanks for using FTE!
[font color=red]As a Moderator I do not "Subscribe" to most topics,
please send email/pm if you need a reply -Thanks![/font]
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Brett Foote
Senior User
Joined: May 2002
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From: Catlin USA
edelbrock carb?
Performance wise, a manual Edelbrock carb of the same CFM is a little better than electric choke - bigger jets and springs. If this is for a daily driver, you will definately prefer the electric choke version - much easier to start from my experiences. Besides, you can upgrade jets and springs at any time if you prefer, but I don't think you'd want to after bolting one on - unless over 400 HP or so. Bigger is not always better concerning carbs.
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