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Old 04-03-2011, 10:05 AM   #1
redmoon
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Default carter avs carbs

I've got two carter avs carbs. would by chance anyone know where I could find out what the cfm's are on these things one is a b9-4615sa and the other is a j8-4617s thanks for any help
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Old 04-03-2011, 10:59 AM   #2
dartracer
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Default Re: carter avs carbs

They are 625 cfms. The 4615-s is off of a 69 383 dart or Barracuda with a 4spd. the 4617-s is 69 383 with an automatic.
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Old 04-03-2011, 11:02 AM   #3
ronk16
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Default Re: carter avs carbs

what carb nos were used in the dual quad set ups, i`ve got a half dozen good cores and need just 2 for my set up????
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Old 04-03-2011, 11:06 AM   #4
redmoon
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Default Re: carter avs carbs

they look huge for 625, been looking all weekend for the cfms on these things, they are setting on a dual intake for a ford 302, so 1250 cfms is alot more doable, the guy I got them from said they were 860 and 890 cfm way overkill for all most any 302 thanks for the info
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Old 04-03-2011, 11:11 AM   #5
redmoon
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Default Re: carter avs carbs

what kinda setup ya got ?
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Old 04-03-2011, 11:57 AM   #6
redmoon
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Default Re: carter avs carbs

did some measuring could one be a 650 and the other a 750 ?
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Old 04-03-2011, 12:47 PM   #7
shmoozo
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Default Re: carter avs carbs

Is it just me or does anybody else think that 1250 CFM sounds like way too much carb for a streetable 302? My calculations based on the standard formula given by Holly (see the bottom of the web page linked HERE) suggest that just one 625 CFM carb would be enough to support an engine that size up to about 7000 rpm.



(Of course, I'm assuming this is for a street engine running on pump gas rather than for an alcohol burning all-out race engine, but ...)
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Old 04-03-2011, 02:26 PM   #8
redmoon
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Default Re: carter avs carbs

it is WAY to much I guess I should have said that it is possible to run that much carberation on a built to the max 302.
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Old 04-03-2011, 02:58 PM   #9
Falcon Gasser
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Default Re: carter avs carbs

Set up dual Edelbrock 600 c.f.m.'s ( AFB Knock off's) on a 302 on this Comet with no issue. Yes it is a 1/4 mile car only but idles fine around the pits with out loading up. The AVS you can tighten the rear air door and it can be tuned for lots of applications, this car ran a 750 cfm AVS for a year and it worked out really good.

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Old 04-03-2011, 02:59 PM   #10
Reman
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Default Re: carter avs carbs

AVS were great carbs from the factory on the Mopars. I had a 69 dart 340 with one and that car ran flawlessly, and fast. It also got great gas mileage when driven the speed limit (which never happened),lol. Ron
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Old 04-10-2011, 06:39 PM   #11
redmoon
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Default Re: carter avs carbs

They are for sale $200 do want to deal with shipping local pick up only
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