Full Answer
How do I know what carburetor I have?
You'll learn the key to figuring out exactly what carb you have: the list number. It's like a "VIN" for your carburetor and should be hand-stamped on the front of the choke tower to the right of the vent tube on most typical Holley carbs. The list number typically is four to six digits long and may or may not have a suffix number behind it.
What does the part number on a Carter carburetor mean?
So, do not get alarmed if you see a Carter-built Quadrajet with a Rochester part number on it. If you find one with a triangular tag on it, and the standard four-digit Carter part number is followed by an S, that would mean that carburetor was an aftermarket replacement.
Where is the part number on a Rochester carburetor?
In late 1968, the seven-digit part number was stamped vertically into the main housing All Rochester Quadrajet carburetors are identified by a seven- or eight-digit GM part number. On units made before mid-1968, the part number was stamped around the outside edge of a round metal tag attached to the fuel bowl.
How do I add 700 in front of a carburetor?
Some older carburetors had 4 numbers stamped on the face of the mount. Add 700 in front of the 4 numbers. i.e. 7004965. Stamped numbers on the carburetor are casting numbers, not carb numbers. Was this article helpful?
Where can I find carburetor number?
It's like a "VIN" for your carburetor and should be hand-stamped on the front of the choke tower to the right of the vent tube on most typical Holley carbs. The list number typically is four to six digits long and may or may not have a suffix number behind it. The date code will be right below it.
How do you read a carburetor number?
1:145:31How To Identify Your Holley & Demon Carburetor - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe list number for these carbs should be hand stamped on the front of the choke tower to the rightMoreThe list number for these carbs should be hand stamped on the front of the choke tower to the right of the vent tube.
Do carburetors have model numbers?
On downdraft carburetors, Weber stamps the carburetor model number on the side of the base flange. Sidedraft carburetors have the model number stamped on the top, outboard of the jet cover. Note that the stamp on the downdraft may be facing the engine.
How do I tell what size Holley carburetor I have?
The Holley List Number can divulge any and all necessary information to identify the specifications for your carburetor. On the standard 4150/4160 models, this number will be located on the throttle lever side of the air horn. Depending on the age of your carburetor, the list number can begin with distinct markings.
How do I identify a GM carburetor?
All Rochester Quadrajet carburetors are identified by a seven- or eight-digit GM part number. On units made before mid-1968, the part number was stamped around the outside edge of a round metal tag attached to the fuel bowl.
What size carburetor do I need?
To arrive at the most appropriate carburetor choice, there's a basic formula: engine displacement multiplied by maximum rpm divided by 3,456. For example: a typical 355ci small-block—a 0.030-over rebuild—with a 6,000-rpm max engine speed would work well with a 616-cfm carb ((355 x 6,000) 3,456 = 616.32).
What is a 32 36 carb?
Perfect for stock or mild performance engines, the Weber 32/36 DGV carb is a progressive down-draft carburetor with counter-clockwise rotation. As a progressive carb it operates as a one barrel most of the time, with the second barrel only opening when more power is needed, or under wide open throttle.
Where do I find my Walbro carb number?
The Walbro part numbers and letters can be found next to the adjustment needles on some of our larger models like the HDA and HDB series carburetors, and near the fuel inlet fitting on our WT and WA series.
Where are the numbers on a Quadrajet carburetor?
There are a couple of locations containing the codes needed to identify your Quadrajet; both are located on the driver side of the carb body. Early Q-jets used a circular tag stamped with the codes found in a cavity in the side of the float bowl, while later carburetors used a stamping on the body of the carb.
How do I know what carb kit to buy?
Using your carburetor number is the BEST way to get the proper carb kit. 99.9% of all carburetors have an identification number located on the carburetor. Some numbers are stamped directly into the carburetor, others used a tag attached to one of the carb body screws.
What is the difference between a Holley 4150 and 4160 carburetor?
These two are very similar with the primary difference that the 4150 uses a thick metering block in both the primary and secondary while the 4160 is shorter in length and uses a thin, metering plate on the secondary side.
What size is a Holley 4150?
14.5 x 4 x 1 inchesProduct informationManufacturerSpeedway MotorsBrandSpeedway MotorsModelHolleyItem Weight1 poundsProduct Dimensions14.5 x 4 x 1 inches1 more row
How do you read numbers on a Edelbrock carburetor?
0:072:43Two Minute Tech: Edelbrock Carburetor Julian Date CodesYouTubeStart of suggested clipEnd of suggested clipThe second one is the julian date code now if this were an endura shine finish carburetor that partMoreThe second one is the julian date code now if this were an endura shine finish carburetor that part number and julian day code would be on the bottom side of the carburetor.
How do I know if I have a 2 barrel carburetor?
Autolite 2 barrel tuning To identify your carb you need the Ford tag number which is stamped into a triangular shaped aluminum tag under one of the fuel bowl screws. The numbers on that tag are the carb identification number, the design code and the production date code.
How do I know what Zenith carburetor I have?
Original equipment carburetors will have two numbers stamped on this tag. The outer circle will be the O.E. part number (ie Allis Chalmers, GMC, IHC, etc.). The inner circle will be the Zenith number. Aftermarket carburetors made during this period will have the Zenith part number only on the tag.
What is the CFM of a Carter AFB?
approximately 400The cfm of the Carter WCFB four-barrel carburetor is approximately 400. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air cleaner flange.
Where to find model number on Walbro carburetor?
Most of the time, you'll find the number right beside the body. The carburetor here is a Walbro WT-99.
Do you need the engine model to look up a carburetor?
Additionally, I would like to add that on engines produced by manufacturers such as Briggs & Stratton, Tecumseh, and Kohler, you will more than likely need the engine's model information in order to look up a carburetor . Many of these carburetors completely lack any indication of model, but will sometimes have a part number stamped in.
Can you find the body type on a Tillotson carburetor?
I mentioned earlier that you won't always find the body type on a Tillotson carburetor. There are a few reasons for this, chief among them being that the equipment manufacturer has requested that it not be present. Fret not though! This is a photo depicting the common Tillotson body styles.
Where to find Briggs and Stratton engine part number?
Your Briggs & Stratton engine part numbers can be found in your engine's Illustrated Parts Lists ( IPL).
What is the reference number for engine parts?
In your engine parts order, you will receive all of the engine parts illustrated in a Reference Number's frame. In the above example, Reference Number "90" would include all replacement parts shown in the frame (ref. 976, 913, 106, 394, 163, etc.). Reference Number "90" would equate to Service Part Number "790206" which would then be used for ordering purposes.
How many digits are in a service part number?
These numbers are one to four digits in length depending on the part. The reference number is used to locate the specific Service Part Number (usually six digits) you will require to order replacement parts for engine repair.
What happens if you don't find your engine type number?
If you do not find your specific Type Number next to any of the Service Part Numbers, the correct engine part number would default to the first (master) Service Part Number listed under that Reference Number. The only time the correct engine part number would not default to the master Service Part Number is if the Code Number also needs ...
How to tell if a carburetor is a GM?
After that, you will find either a 2, or a 5. The number 5 designates an emission carburetor from California. The digit following the number 2 (or 5), will indicate the type of GM car it was originally installed. A 4 would mean it is for a Buick, a 5 would mean Oldsmobile, and Pontiac carburetors usually have a 6 or 7.
How to identify a Rochester carburetor?
All Rochester Quadrajet carburetors are identified by a seven- or eight-digit GM part number. On units made before mid-1968, the part number was stamped around the outside edge of a round metal tag attached to the fuel bowl. Sometime after mid-year 1968, Rochester moved the part number to the flat area near the secondaries, just behind the secondary linkage. The part number of the carburetor will tell you things such as when it was built, and where it originally came from. But, not all Quadrajet carburetors were built by Rochester.
What is the casting number on a quadrajet carburetor?
Quadrajet carburetors built after 1976, use an eight-dig it casting number. These carburetors do not follow the identification numbers of previous years; they will start with either 1705 or 1708. The number 1705 identifies the unit as being built between 1976 and 1979. If your carburetor reads 1708, it was built in the ’80s. While the fourth number denotes the decade, the fifth digit designates the actual year in which it was produced. The last three digits will unfortunately, give you no information about the carburetor, unless you have a Rochester numerical reference chart.
What does 4M mean on a quadrajet?
When discussing Quadrajet models, the number 4 means a four-barrel carburetor. The “M” after that, is a style/model type. Early Rochester four barrels were a “G” series. So, a 4M is a Quadrajet, and a 2M is a two-barrel Dualjet. The next letter, V, C, or E stands for the type of the choke’s thermostatic coil. If there is an E before the number 4, that designates an electronically-controlled carburetor. If it has an M before the 4, that’s a “modified” Quadrajet, built starting in 1975.
How old was Randy Bolig when he bought his first car?
Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles.
Who wrote the Rochester carburetor manual?
If you are interested in doing some more reading, the Books Rochester Carburetors by Doug Roe, and Haynes Rochester Carburetor Manual by Mike Stubblefield and John Haynes are both very good technical resources for the rebuilding the Quadrajet.
Is the Rochester Quadrajet a performance carburetor?
By Randy Bolig April 28, 2016. It is within very small circles that the Rochester Quadrajet is ever considered a performance carburetor. Although it was placed on many of the vehicles Chevrolet built from the ’60s until the late ’70s – as well as some Chrysler products – it still does not get the respect it deserves.
