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Old 06-09-2013, 10:20 PM
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Holley Carb ID **Please Help**

Just found this sight, thought i would post and see if anyone could possibly help me identify this carb. Its rough looking, and dirty...There are numbers all over the place, still cant seem to find anything out.
The both metering blocks are stamped 7236, the front one is also marked 10169. The rear is also marked 7236 and 6739.

The top of base plate is marked 12R-5395B
Bottom of base plate is marked 4923 4
Front butterflies are marked 242
Rear butterflies are marked 228 (At least thats what it appears to be)

The front butterflies are steel it looks like and the rears are aluminum. I obviously know nothing about holleys....if anyone can help me id sure appreciate it. I have several pics too.. Thanks in advance.

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Old 06-10-2013, 09:26 AM
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Your carb model numbers are on the choke tower as that is where holley model numbers are. One set of numbers is the model number and the other set are the date code it was made.
Eric
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Old 06-10-2013, 09:43 AM
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Yeah, it's the Holley "LIST" number that you'll find most helpful in most cases.
If this carb came off of an OEM vehicle, it may ALSO be stamped or tagged with an OE identification #.

Some examples:

Ford: D1ZE-9510-BA (the "9510" may or may not be included, as it is the Ford Basic number for ALL carburetors)

GM: 7 or more digits, all numeric. (i.e 98051234)

Mopar: Mostly numeric, may have 2 more letters at the tail end (i.e. 123456AA)

IHC: 123456-R91
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Old 06-10-2013, 11:21 AM
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The choke tower has been milled off...
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Old 06-10-2013, 12:28 PM
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Well that throws a wrench in the works lol. Next thing to ask is it a double pumper or vacuum secondary and does it have center hung fuel bowls or side hung fuel bowls.
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Old 06-10-2013, 12:31 PM
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Based on a Google search of "12R-5395B" ... it sounds like this is a spread-bore base plate (Holley 4165 series double-pumper) ... Correct so far?

One of the results returned was this one on camaros.net suggests that this might be a List#6853.

If so, the numerical list says that this is a 650 CFM

What model Holley Carb do I have? - Corvette Forum

The above thread suggests a similar carb with a list# of 6210-2, which is also a 650 CFM 4165 series.

I don't know which components you are looking for, but *most* 4165 carb kits will likely work.(37-605) The list# is usually used in a "bill of materials" kind of way, used to identify things like which jets, squirters, power valves, etc were originally installed.

HTH

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Old 06-10-2013, 12:49 PM
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66gmc that is what I came up with as well a 650 spread bore mechanical secondary. Is this what it looks like?
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Old 06-10-2013, 01:18 PM
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How can I add a pic. I have several on my phone
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Old 06-10-2013, 01:34 PM
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Quote:
Originally Posted by 89zilla View Post
How can I add a pic. I have several on my phone
Sorry ... no real way (that I know of) to send a pic from your phone directly.
There are basically 2 ways to add a picture to a thread (that I do know of)

1.) Add it as an attachment, which can be opened by the membership.
2.) Paste a link to a picture that already exists somewhere on the internet.

I often take a pic using a camera with a memory card, then upload that file to my own Hotrodders Photo Album (or Project Journal). Once this image has been uploaded to Hotrodders, you can copy it's URL and paste it directly into an image frame ... like this:


More in the site's FAQ section

Last edited by 66GMC; 06-10-2013 at 01:38 PM. Reason: Changed search term from "photo" to "upload"
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Old 06-10-2013, 03:03 PM
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Pics....not sure if they loaded or not
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Old 06-10-2013, 03:13 PM
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Quote:
Originally Posted by 89zilla View Post
Pics....not sure if they loaded or not
Yup, one picture sure did.

It sort of looks like someone has converted this carb to center-hung float bowls, as most of those Q-Jet Replacement carbs came used side-hung bowls and a transfer tube. (A good upgrade, IMO)

I think that a lot of guys believe that removing the air horn and choke plate is going to get them a lot better airflow / CFM ... but I'm not convinced ... particularly if we're talking about a street machine.
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Old 06-10-2013, 03:15 PM
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that definitely looks like a spread bore double pumper but I don't know for certain what size though. The fuel bowls look different then the picture I posted as it was taken from a carburetor site that sells carbs. hopefully someone can chime in and give further info as I have never messed with spread bore carbs that holley made.
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Old 06-10-2013, 06:47 PM
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Here's a pic of it next to my regular 750dp.
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Old 06-10-2013, 06:53 PM
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im not good at the whole pic uploading thing haha
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Old 06-10-2013, 06:57 PM
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this one is a little bigger in think...i shrunk the first one too much.
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