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Old 10-08-2012, 02:56 PM
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HELP identifying Holley Carb

Any one know what type of holley carb this is ON THE AIR HORN IT SAYS
(LIST-4118
1994

I NOW ITS A DOUBLE PUMPER

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Old 10-08-2012, 03:33 PM
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Quote:
Originally Posted by the82elco View Post
Any one know what type of holley carb this is ON THE AIR HORN IT SAYS
(LIST-4118
1994

I NOW ITS A DOUBLE PUMPER

Not to burst your bubble ... but are you SURE it's a double-pumper?
If I'm reading the Numerical Listing correctly, it says it's a 725 CFM 4150 series with a yellow spring in the vacuum secondaries.


IMO, a VS carb is better for MOST street-driven vehicles (especially with an automatic trans) anyways.

Last edited by 66GMC; 10-08-2012 at 03:39 PM. Reason: Numerical Listing link
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Old 10-08-2012, 03:33 PM
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I seem to remember it being an older model from the late 60s or early 70s,maybe check oem?
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Old 10-08-2012, 03:45 PM
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Quote:
Originally Posted by 66GMC View Post
Not to burst your bubble ... but are you SURE it's a double-pumper?
If I'm reading the Numerical Listing correctly, it says it's a 725 CFM 4150 series with a yellow spring in the vacuum secondaries.


IMO, a VS carb is better for MOST street-driven vehicles (especially with an automatic trans) anyways.
yea is a double pumper
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Old 10-08-2012, 03:47 PM
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Originally Posted by vinniekq2 View Post
I seem to remember it being an older model from the late 60s or early 70s,maybe check oem?
so will i be better off keeping my 600 edelbrock carb??
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Old 10-08-2012, 03:52 PM
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I just took another look.

Primary fuel bowl #134-103
Secondary bowl #134-102
Which are center-hung fuel bowls. (That's a GOOD thing.)

The primary bowl is listed as possibly being on a MARINE carb?


In any case ... both bowls will have accelerator pumps attached to the bottom of BOTH bowls if it's actually a "double-pumper"

Edit: Sorry, I was typing this while you posted a response to my last one.
My aplogies ... not trying to be argumentative.
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Old 10-08-2012, 03:59 PM
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Quote:
Originally Posted by the82elco View Post
so will i be better off keeping my 600 edelbrock carb??
You'll get a varied response to this question.

I like Holleys because I find them pretty simple to work on.
Your Holley 4418 is supposed to be 735 CFM, which may or may not be a good thing, depending on engine displacement, RPM range, and intended use.
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Old 10-08-2012, 04:03 PM
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Quote:
Originally Posted by 66gmc View Post
you'll get a varied response to this question.

I like holleys because i find them pretty simple to work on.
Your holley 4418 is supposed to be 735 cfm, which may or may not be a good thing, depending on engine displacement, rpm range, and intended use.
i was going to put it on a mild built sbc 350 bore 40 over
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Old 10-08-2012, 04:22 PM
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Quote:
Originally Posted by the82elco View Post
i was going to put it on a mild built sbc 350 bore 40 over
Holley's Interactive Carb Selector recommends a 600 to 650 CFM w/ vac secondaries for a "mildly modified" 350 with a max RPM of 6,000 in a vehicle weighing more than 3100 lbs ... etc.

Here' an actual CFM calculator which accepts some variables (like Volumetric Efficiency).
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Old 10-08-2012, 04:32 PM
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depends what you call mild? A 650 X is a great little carb.also depends on what intake you are using.
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Old 10-08-2012, 05:26 PM
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Quote:
Originally Posted by vinniekq2 View Post
depends what you call mild? A 650 X is a great little carb.also depends on what intake you are using.
Edelbrock performer RPM INTAKE
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Old 10-08-2012, 05:46 PM
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650 would work very well on a performer and mild 350 with headers.
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Old 10-09-2012, 11:20 AM
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Quote:
Originally Posted by the82elco View Post
Any one know what type of holley carb this is ON THE AIR HORN IT SAYS
(LIST-4118
1994

I NOW ITS A DOUBLE PUMPER
A Holley 4118's not a double pumper- it IS a dual feed, however- a lot of guys get this mixed up sometimes. Has vcuum secondaries, was originally a performance aftermarket carb for the 289/302 sized Ford. As long as the linkage can be worked out for the engine you want to use it on, it'll work fine being as how it's a vacuum 2'ndary carb. Might take some tuning, just like any carb.

From http://mustangtek.com/4150/4118.html:
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