Best Carburetor for 350 Chevy Engine: Our Selections

Published on: March 24, 2022
Written by Liam Jaxon / Fact-checked by David Rowan

Carburetor engines work on fuel-feeding engines through a carburetor. The carburetor is a mechanical part that reaches the fuel through the compressed air to the combustion chamber. The carburetor is the most important part of the engine. You can compare it to the heart of the engine.

How much of the process is through the combustion chamber suction, and the work is done depending on how much throttle body air is done. 

Here, the carburetor itself does not deliver the fuel. Rather, the air sack pulls the fuel from different channels and mixes it before the intake manifold. Yes, the carburetor controls Air-Fuel Mixer and Ratio when the channel is tuned.

Know carburetors for 350 chevy engines in recent times. All data is taken from carburetor users, their review base information is shared in this article. The carburetor feeding system is an old-time mechanism but modern technology has given importance to it and has many advantages and disadvantages.

What Is Carburetor

The carburetor is a device that causes air and fuel missions in an intravenous engine (which happens to be burned inside the engine). A carburetor makes a major mix of air and fuel, depending on the difference in air pressure. It’s an idle speed maker of the engine.

Due to the piston of the engine above, the empty space inside the cylinders creates an atmosphere that has lower ambient inside the cylinder. But the intense external pressure causes the excess air to enter the inside so that the external fresh air enters the gas chamber and merges with the gas.

How Does It Work

This is an essential part of an open part that is entering the air very quickly. There is a jet needle inside the main jet. As soon as the throttle is increased, this jet needle gradually moves away, as the entrance to the air in the carburetor opens to enter the air.

This gateway is completely opened while in the highest throttle. Pilot jets and slide valves are two separate systems that control the airflow through small holes when the vehicle moves at a low speed

Why Use Carburetor

If you have a vehicle, you know why it’s used and what’s the benefits. But you may not know the right benefits of it.

People usually say you need to check before buying as they are carb fit perfectly, Instant start it up, and run great with no adjustments, 100% improvement and noticeable gains in fuel economy, power-valve blow-out protection, and trouble-free operation, no other adjustments are needed when installing, circuits are checked for proper sizing, the carburetor is then reassembled using the highest quality components.

I think now you have gained an idea about yourself and why I use it. All features insert in the top 5 carburetors. If you want something big and powerful, you can buy Quadrajet or Edelbrock 1406—these carburetors save your fuel economy.

Of course, you love the activities of the renewed engine. If you want 2 barrels with a manual choke, you can buy Holley 2300. It also saves you money. Rochester 2GC and 1 boost your vehicle power. The choice is all up to you.

Advantage of Carburetor

Carburetors play an important role in engine speed. Hope you have a clear idea about the carburetor. Do you know the advantages of this machine? Well, now I am going to share some advantages of the carburetor. Here are the advantages that will help you a lot.

  • Much cheaper than fuel injectors. 
  • An excess air-fuel mixture is available. 
  • The cylinder can draw more fuel through the carburetor. 
  • Can be easily repaired.
  • Can be used in both two strokes and four-strokes.

Disadvantages of Carburetor

Like other machines, the carburetor has both advantages and disadvantages. From the above discussion, we know what are the advantages of the carburetor. The carburetor makes our work much easier in many ways but it also has some disadvantages as well as advantages. It is very good to know the advantages and disadvantages of a user carburetor so that it is easy to take corrective action on any kind of problem. I will now highlight the disadvantages of the carburetor. 

  • Some additional measures are required to speed up the supply of the mixture. 
  • Is affected by the surrounding conditions. 
  • Heavy than fuel injectors. 4. It costs more to keep the carburetor running than a fuel injection system.

How to Maintain

When we buy something for our needs, then we think that it should last many days. You also think about your carb. Today I will describe to you how to protect your carb. Every 7 days, once you clean your fuel/air tank. It helps your vehicle from street trouble. So you need an adapter you find at any auto parts store for just 10$.

When you buy HOLLEY 2300 carburetor, you get a free video on how to install it. So you don’t need to become a professional engineer. You can easily protect your vehicle expertise. Carburetors are made of aluminum, so there is no way to fuel flooding. But you need to check for sure.

How to Finding the Correct Carburetor for 350 Chevy Engine

When buying the perfect carburetor for a 350 chevy engine, there are some important things you need to consider.  The most important thing we figure out when purchasing your carb and will discuss why each one is important given below:


The authority determines the price. If your budget is under 200$, you don’t purchase any carb that costs more than that. If you find really amazing prices, then make sure their brand and customer review. That will help you to be clear and easy to buy.

Holley 0-7448 Model 2300 350Cfm


The first thing to keep on the list is CFM, which is needed for your engine. A simple formula is available that you will put right in the CFM Ballpark. Naturally, the formula of an aspirated petrol engine is:

Maximum rpm/3,456 X Engine Size (c.i.d.)  = cfm at 100-percent Volumetric Efficiency (VE)

Example: 350 c.i.d. X 6,000 rpm = 2,100,000/3,456 = 608 cfm

This engine requires an estimated 608 CFM. Anyway, most street engines are capable of getting just 80 percent VE. Ported heads, headers, good intake, and carburetor can achieve about 85 percent VE when a modified street engine. It can perform 95 percent, or more VE. is a wholly modified race engine. The number of CFM with this formula must be affected by this percentage.

RPM Range

The minimum and the maximum RPM range of the engine will need to know. The lowest rpm is as critical as the highest rpm. At the minimum, you need to be concerned with the minimum rpm that will have to accelerate from you.

Several additional pieces of information come into play – such as transmission type and converter flash RPM. For example, with a 3500 RPM stall converter, one car will need less than one carburetor with the same engine 5500 RPM stall converter in a car. It’s all-around acceleration – a big carburetor that can produce more torque and power in Dyno; generally, the engine can not speed up the minimum speed from the lowest rpm.

Remember, the engines are not happy when they are running the highest torque RPM! As the correct connector should flash around 100 to 200 rpm above the highest torch RPM. Let’s see a good example is a standard small block of Ford and a small block of Chevrolet.

The primary amount of the Ford factory runs into a smaller carburetor than a normal Chevrolet. This can be proven through dyno (engine and chassis dyno) as well as racetrack testing. It comes down from the port speed and rotation point (usually the pushrod area above the head). The induction track simply wants a round point to control the velocity, usually the cylinder head or carburetor.


There are two types of choke carburetors. Manual choke and electric choke. Manual chokes can be transformed into an automatic electric choke operation with correct kits and vice versa.

Throttle Lever

Linkage hookups will bolt directly to the carburetor throttle lever and kick down the maximum three-speed automatic transmission. The bracket does not include a carburetor. So you need to purchase Chrysler applications. Some MOPAR applications may require the assembly of a specific throttle. Vehicles decorated with a GM-TH700R4 automatic overdraft transmission will need to purchase a bracket kit.

I hope this helps to handle better the essential things you consider when choosing your vehicle’s right carburetor. Don’t forget to read customer reviews and the best price available.


The carburetor for 350 Chevys should be strong and dependable. They can be solid, provided that they are made of solid materials. Most of the carburetors you will find are either made of aluminum compounds or other rock-solid metals.

A carburetor made of aluminum amalgam will be lighter and keep the carburetor from distorting. It’s likewise great for colder environments. Substantial metals are very strong and can endure outrageous temperatures. They can get by for a drawn-out time span as well.

Along these lines, before you make a last determination, make certain to examine the materials.

Fuel economy

A 350 Chevy motor carburetor should have the option of mixing the right ratio of gas and air to supply the car motor. Assuming it does it efficiently, it will actually want to give great mileage.

The motor consumes less fuel when it gets the appropriate amount of air and gas. Assuming you own a Chevy, you should know how much additional gas you can consume without the utilization of a carburetor. Subsequently, ensure you pick a carburetor that is viable with your vehicle and equipped for further developing eco-friendliness.

View Top 6 Carburetor for 350

There are many carburetors you can find in the current marketplace. But before buying, you need to know about carburetor operation, price, fuel injection system, fast service and easy to get available, ease to tuning and setting and the engine can be opened individually without disturbing considering those essential features to make the best purchase.

We know your time is valuable, and you don’t want to waste it. So to help you buy the popular carburetor for a 350 Chevy engine, we’ve created this complete guide so that you can pick up the affordable carburetor that works well for you.

1. New Carburetor Type Rochester 2GC 2 Barrel Chevrolet Engines 5.7L 350

Rochester Chevrolet simply is an awesome product for a 350 chevy engine. Its other name is Q-jet. Those who’s been driving vehicles for a long time already are well-known of the Q-Jet brand. 

You do not need to worry about the throttle response lags as its high-speed circuits are there. Its calibration is also perfect. Since it has four barrels, so two primary and secondary barrel works, you will be surprised to see its activities. Made of aluminum and insert dual-plane intake manifold. Lower RPM is perfect for it.

It’s called stage 2 for better idle speed. It’s very similar to Rochester stage 1, but you will have to update idle speed and various operations. So, when you choose stage 1, you will get the same performance as your engine. You will get maximum HP if you buy stage 2.

It’s an 8.5:1-9.5:1 compression ratio so that you can fit it according to your vehicle. (Must remember about higher octane gas in this case). This carburetor has a large base bolt pattern they are 3 11/16 x 2 1/16 inches.

You’ll be thrilled with these features because you don’t need to replace this popular carburetor brand for decades. I would advise you for your convenience if you want to replace this carb for the first time. Buy a book for carburetor replacement and modification. It’s effective and cheap. So you can buy it without any doubt.

What we liked

  • The carb fit perfectly;
  • Instant start it up, and it runs great with no adjustments;
  • Heavy Duel Metal Construction;
  • It will fit the models 5.7L and 6.6L Engines;
  • 100% improvement and noticeable gains in fuel economy.

What we didn’t like

  • Without cleaning carburetors, oil channels will be blocked;
  • Use clean fuel before Installing the Carburetors.
  • cheap gasket.

2. Edelbrock 1406 Performer 600 CFM Square Bore 4-Barrel Carburetor

Edelbrock 1406 perfect 4-barrel carburetor with its better performance. The acceleration and drivability of your old car can improve using a 4-barrel carburetor. For some such activities, it’s a perfect fit for your car. So let’s talk about some good performances. I’m sure you would like to see its performance.

It has an electric choke. It’s made of all-aluminum construction for cooler operating temperatures and less warping. Fuel economy calibrated for good street performance. 

It has large engines with Edelbrock Performer manifolds. Because of its design, there is no damage to the leak because part of the plastic For ignition advanced electric choke carburetor includes both time and full vacuum ports. It can easily change metering rods for precise tuning.

This carb is easy to install, easy to tune and hasn’t let you down at all. Just buy this product and get a video on how to install it.  Don’t worry when purchasing this product because Edelbrock 1406 offers 90 days warranty. If you don’t like it, you have a chance to return.

What we liked

  • Edelbrock’s exclusive offer 90 days warranty;
  • Work perfectly with your new carb and fits Chevy 350 engine;
  • Awesome design made by all aluminum no risk to leak;
  • Full installation video for this carb.

What we didn’t like

  • Without seeing the video, it takes 90 minutes to set up.

3. Holley 0-7448 Model 2300 350 CFM 2-Barrel Manual Choke 

Holley carb is a 2-barrel carburetor. This carburetor is perfect for racing classes. Very easy to set up, so the engine runs awesomely. No adjustments are needed. This carburetor comes with a gold dichromate finish on fuel bowls for corrosion resistance.

Manual choke. But I said before; an electric choke is the right choice. Manuals also choke good too. Because it can be controlled easily and 100% trouble-free.

All-metal parts, replaceable jets, center hung float bowl, universal throttle lever. A couple of pumps on the throttle, and it cranks right over and starts, staying running until warmed up. I’m sure you love this setup!

It also includes a power valve, high-flow venturi, and a standard 5-1/8 air cleaner flange. Mixes the right amount of gasoline with air so that the engine runs properly. Because of the Manual Choke, the heating of the engine can be very easy to control. The Holley 2300 looks like the best carb for a stock 350 -2 barrel carburetor.

What we liked

  • 100-percent wet-flow tested and calibrated for street drivability;
  • Manual choke for easy control of engine warm-up;
  • Power valve blow-out protection and trouble-free operation.
  • Corrosion resistance,

What we didn’t like

  • No electric choke.

4. JET 33004 Marine Quadrajet Carburetor

Every jet marine carburetor is rebuilt according to strict quality rules using the best parts to ensure the best-performing carburetor for your boat. This carburetor goes with an electric smoother.

It features a manual choke, which’s why the operation is trouble-free. I already described this previous choke carburetor. It has the same quality and activities as the last three carburetors.

But it’s cheap for those others. Effortless to install and good performance on the street. It doesn’t lower your vehicle speed. You can buy a 2-4 barrel adapter kit for Rochester 2GC if you need it.

What we liked

  • Very smooth idle and smooth transition;
  • Easy to install;
  • Just turn the key, and it starts instantly;
  • No other adjustments are needed when installing.

What we didn’t like

  • Nothing found.

5. Holley HOL 0-4412S 0-4412S Model Manual Choke New Carburetor

This carburetor offer improves your vehicle’s idle speed. If you get tired of replacing your carburetor, then choose this one for your 400 CID engine. ‎Holley 2300 starts with a complete disassembly of the hand-selected core. So you can easily clean and inspect the procedure.

50cc accelerator pump for extra fuel under initial acceleration. After installing, instant throttle response. This is a high-performance carburetor made with heavy metal construction.

These carburetor circuits are checked for proper sizing, so you don’t need to worry about the size. Jet reassembled using the highest quality components. This super point gets down your confusion. Other facilities are quick and easy to install.

What we liked

  • Vibratory polished for good looks;
  • Manual choke for precise cold start control;
  • Power valve blow-out protection;
  • The carburetor is then reassembled using the highest quality components;
  • Need no adjustments at installation.

What we didn’t like

  • No warranty.

6. Partol 2 Barrel carburetors for 350 Chevy

The Patrol 2-barrel carburetor is an incredible way to extend the display of your motor. While similarly working on its economy and energy. This is a great post-retail option as opposed to your old carburetor. It incorporates a gasket and a seal and is built in the same way. It is made from strong metal and it is completely hard due to its tough development.

Be that as it may, you ought to clean the oil channels and maybe change the oil channels prior to introducing this carburetor. If not, your oil entries might become stopped. This is a carb with two barrels. Considering what has been referenced in regard to two-barrel carbs, this carb might not be able to deal with higher RPMs. Accordingly, it might upset the speed increase process.

For expanded motor execution, this carburetor additionally has more noteworthy choke responsiveness. It increments around 5 to 10% strength while keeping up with close stock efficiency, which makes it one of the most outstanding carburetors for a chevy 350 engine.

What we liked

  • Improves throttle response;
  • Increases performance;
  • There is a sturdy construction.

What we didn’t like

  • Acceleration may be affected.

Carb Size: Is Greater Always Better?

While we’ve all heard people say – “Bigger is Better,” – is that always true? We all know that more air and fuel equals more power, does that mean the most important carburetor always makes more power? Unfortunately, an excessive amount of carb may be a common mistake that will actually hurt your engine’s general performance.

The right idea would be to match the carburetor to the engine’s breathing ability or volumetric potential. The engine’s volumetric efficiency may be a measurable value, and with a correctly matched carburetor, you’ll improve your engine’s performance.

Carburetor vs Fuel Injection: Which One Is Better?

The carburetor is an older method than the fuel injections. If you are a lover of new technology then fuel injections are good for you. But fuel injection is a more complex method than the carburetor. Maintenance of the fuel injection is also complex. If you want easy Maintenance then you should choose a carburetor.

Carburetor follows a simple method and its cost is lower than the fuel injections. Cost is important to factor maintenance and is also cheap when you use a carburetor in your engine. Fuel injections produce more energy than the carburetor. 

Carburetor Or fuel injection you have to choose which one will be better for you. Consider all the factors and choose which one you will use for the job.

What Size Carburetor Do You Need?

The majority of you will understand that we have an unequivocal method to find out the ideal size of carburetor for a motor. The equation that will get you that digit is:


      C.I.D= Motor size (cubic feet).

      RPM= Maxi motor rpm.

           VE= Volumetric productivity.

The ups and downs of the Chevrolet 350 are

       C.I.D= 350.

       RPM= 6500.

           VE= 85%.

Along these lines, our expected carburetor size for this motor is 559.53 CFM. 

Given the opportunity to assemble it for an approximate carburetor estimate, a 600 CFM carburetor may be needed by anyone for our motor.


If you still have some questions on your mind then the frequent ask questions part will help you. Here is the FAQ part of this article. Hope that you will get some helpful information from here.

What is the Most Dependable Carburetor?

Of the thirteen brands of carburetors, aficionados chose Advanced Engine Design (AED), Edelbrock, and Holley (in sequential request) as the main three most dependable brands of carburetors.

How Much Horsepower will a 650 CFM Carb Support?

450-470 Horsepower

In fact, horsepower—or even torque, doesn’t matter at all.

What Are the 3 Types of Carburetors?

According to the direction of the flow of air, you will find three types of carburetors. They are: 

  • Constant Choke Carburetor;
  • Constant Vacuum Carburetor;
  • Multiple Venturi Carburetor.

What Is the Difference Between the Stage 1 and 2?

Basically, better idle.

What is the CFM rating for this JET 35002 Rochester carb?


Edelbrock 1406 Replaced Rochester Quadrajet?

Depends on what kind of intake manifold you have. For Some intake manifolds, you will need an adapter

What Connects to the Top Right Outlet in Rochester 2gc Carb?

There is a screwed fitting that on the other end has a tip for a hose to be tightened with a clamp


Hope you can select your best carburetor for 350 Chevy engine reviews from us. These entire 5 best carburetors are perfect for any vehicle. However, I gave you priority to these carb advantages step by step. After considering the major requirements hope you are clear on which best brand carburetor needs for you.

If you have no issue with the budget and you love new technology then you should pick the JET 35002 Rochester Quadrajet Stage 2 Carburetor because this one is the right choice. If you need a budget-friendly carburetor then you should try the Rochester 2GC 2 Barrel Chevrolet Engines 5.7L 350 Though choosing the best from various models wasn’t too easy, we did. You can now find the suitable one from them for you easily. Good luck!

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About This Writer

liam jaxon author pic

Hi, I am responsible for the 'Homeowners Power Solutions' category. My name is Liam Jaxon and a licensed technician with 7 years of experience in vehicle batteries, electrical gadgets, and home appliances. My working experience in different residential & light commercial electrical sectors and the automobile industry helped to acquire vast knowledge in this industry.

Hi, I am responsible for the 'Homeowners Power Solutions' category. My name is Liam Jaxon and a licensed technician with 7 years of experience in vehicle batteries, electrical gadgets, and home appliances. My working experience in different residential & light commercial electrical sectors and the automobile industry helped to acquire vast knowledge in this industry.

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