The 350 Chevy is considered to be one of the best small block V8 engines of the century. It packs a lot of horsepower, a good amount of stroke and bore. But in order to channel all this in-built strength, you will need to install a top-class carburetor atop the engine.
Carburetors have the important responsibility of mixing up the best fuel to air ratio for your engine. If it slacks on the job, your powerful and expensive V8 will become painfully sluggish.
This is why we recommend nothing but the best carburetor for 350 Chevy. After all, the best deserves the best.
Have a look at the list we’ve prepared below. With our help, choosing will be easier.
Best Carburetor For 350 Chevy Reviews 2020
Picking out a carburetor can be extremely mind-numbing if you don’t know what you are looking for. We recommend that you learn about carburetors in detail – only then will you be able to confidently choose one.
1. Edelbrock 1406 Performer 600 CFM Square Bore 4-Barrel Air Valve Secondary Electric Choke Carburetor
The main venturi system is at the bottom of the carburetor. This assists it in creating a lower pressure in the valves so that the fuel travels through the tube at a faster pace.
A secondary air valve system, along with the singular air passage helps to add more to that pressure created by the venturi, and the resultant mechanism of these two combinations sends a strong signal to the intake manifolds of the vacuum.
These vacuum manifolds then quickly deliver the low-pressure air at high velocity to the cylinders of the engine.
There goes the main mechanism of the edelbrock carburetor.
In terms of the exterior, you will see that the edelbrock model has a silver finish with a nice sheen on it. The machine looks good when it sits on the engine, and doesn’t catch dirt too readily.
The type of choke it uses is an electric one, which continuously draws in current when the ignition is on. The coil inside expands effortlessly and lets air in more swiftly. When the ignition is turned off, the coil will start to cool down on its own accord. So, you won’t have to fear the carburetor storing up heat afterward.
There are square bores on this carb. This means that the bore and throttle values are exactly at a ratio of 1:1. As such is the case, this carburetor will be able to mix fuel and air with great efficiency, and all the while, it will be able to quickly speed up the vehicle from a low RPM value. Overall, regarded as the best Edelbrock carb for chevy 350, this one is surely worth a try.
This one is another high-powered carburetor that produces about 600 CFM and is suitable for cars with slight mods. Its parts are shiny, and it weighs considerably low. Both these aspects are good for maintaining cleanliness and the health of the engine.
The device has been calibrated to universal V8 engine standards so that they can be installed right away after the purchase.
The 4 barrel carburetor for chevy 350 features a manual choke that has to be controlled by the use of connecting cables. Manual chokes might not be as effortlessly used as electric chokes, but they are much more reliable at giving the engine a successful jolt even when it becomes completely cold.
There are vacuum secondaries attached here, and these are connected to a diaphragm attached to springs. When air passes through this space, the vacuum causes it to gain rotational speed, which builds up the force and opens up the spring to send air to the venturi at a high torque value.
These vacuum secondary blades are much better for heavy engines than the mechanical blades that are used in some carbs.
Also, there is only a single fuel feed inlet here, which makes for easy installation of this thing.
And like the previous carb, this device also has a power valve that gives it protection against unforeseen blow out the action, and overall, this makes it rank up among the best 4 barrel carburetor for 350.
If you are upgrading your engine with modifications, then now would be a good time to consider buying a carburetor like this. This is a fully able device that comes out of the box with the perfect calibration required to take the V8 to a street-level performance.
There are 4 barrels in the carburetor, and these will feed the perfect mix of fuel and air into the eight cylinders of the Chevrolet.
Electric chokes have been installed in this because they are less of a hassle to operate. These chokes are easy upon the starting of the ignition, and with the help of the single fuel feeding inlet, they draw air into their system with smooth operation.
Then again, there are the vacuum secondary blades here that make it easy for the air to enter the venturi by increasing the RPM of the flow. Moreover this one is seen as the best holley carb for chevy 350.
The carburetor has 600 CFM, which will have a much significant impact on the regular volumetric efficiency of the engine. Overall, with this installation, it will feel like your engine is much more powerful than what you believed it to be!
Keeping the car idle is highly looked down upon because of the potential damage it can bring to the spark plugs, gas casket, and other parts of the engine. However, this carburetor can lower the combustion rate of the idle engine by pushing fuel through the idle ports instead of the main jet.
This greatly lowers the chances of any damage that might have otherwise been caused to the engine. This is a good quality quadrajet carb for Chevy 350.
There are four barrels inside the carburetor, which means that there are 2 sets of barrels – primary and secondary. The primary ones stay open when the car is idle, and the secondary barrels start to open as the car is jolted back into action.
The system has a dual plane intake manifold, which lets it have a bigger surface area to cause the air to be transferred efficiently. This type of large vacuum space can deliver power to the cylinders very swiftly while maintaining high efficiency of fuel combustion at low RPM values.
This one is an elegant solution for the combustion system of your Chevy 350. It is of a design that allows you to take your car onto the street level of performance, and it also has a mandate allowing it to be used for racing on oval tracks as well.
One of the best attributes of its build is that it can be mounted on top of the engine very easily. It has a wonderful plug and play system that allows you to get done with the installation and quickly test out the efficiency it provides to the V8.
You will find that by merit of its 350 CFM, this carburetor is very much able to pour life into the engine without creating any issues of unwanted emissions.
This device has a manual choke – and the advantage of this is that it won’t cool down and become useless in the winter – the choke will always let in a uniform supply of air regardless of the fluctuations in temperature.
Then there is a power valve inside the 350 engine carburetor, which will quickly sort out a fix in case the engine falls weak to a blow out.
The fuel bowls contain a center-hung float, which is much better at handling the pressure drops than a side-hung float. In simpler words, except the air flow into the engine to be much smoother with such a highly capable carburetor.
Last but not least is the dichromate finish on the top of the device – this will prevent any corrosion or resistance from weakening the merits of the device.
This is a powerful carburetor for the cars that require a bit more of everything. First of all, let’s start by saying that the body of this device has a thin film of aluminum, which helps it to put up a shield against the heat. These carbs are made for completely unmodified to slightly modified V8 engines.
It has a single velocity stack in the air inlet, which does its job very well by reducing any turbulence in the induced air. Then there is the fuel bowl made of a composite material – this bowl keeps the fuel cooler by 20 degree Celsius, and optimizes the entire fuel mixing process.
Then there is the electric choke system of the chevy 350 carburetor, which always successfully jolts up the engine to life even if it has been out in the cold all night. There are no plugged airways connecting the main body and the fuel bowls, and so chances of leaks are greatly reduced.
The throttle response is satisfyingly responsive due to the 1-⅜ inches of the primary throttle bores and the triple stack boosters that give a boost to the pressure drop as it travels through the main venturi.
The airflow of the carb is about 625 CFM, which is perfect for a high-powered 8 cylinder engine such as the Chevy 350.
If you think your V8 has not been giving you the best of its capacity, then this chevy 350 carburetor might look intriguing to you. It will squeeze out more HP from the engine without demanding any more fuel mileage from your car than it is used to.
This 350 small block carburetor has a heavy metal body, and it will give you no fancy deals. But it works its 2-barrel design to its full potential. If you have felt your Chevy 350 struggle to go uphill or downhill, then installing this device is the solution. But this carb is a bit tall, and you might need to tweak the hood of your car – so make sure to check this out before you decide to finalize the purchase. For comparison, this is a bit taller than a regular Quadrajet.
It comes with a mounting gasket and all other essentials necessary to get it locked and ready in place.
This replacement carburetor for chevy 350 is fully customized for direct installation right out of the box. No need to waste time on calibration either. The calibration has been adjusted for metering rods and easy start ups in the car, and does not require any other functions to be added.
Brawlers are carbs that are especially designed to control precision in the air and fuel mixture. Quick fuel is a known name in the world of cars and carburetors, and that is because they are extremely reliable and budget friendly.
Made from aluminium, these carburetors sit well between the engine and the airbox. They are extremely lightweight, but very strong bodied.
They are made with all brand new components that make them powerful and durable. Now, if you have a preference for vacuum or mechanical secondary models, then the good news for you is that both options are available with this model.
They have a 650 CFM, which makes them ideal for stock engines. But unfortunately, they won’t perform that well with engines that have power adders installed in them.
It comes with 4 barrels for a healthy mix of fuel to air ratio. And it also has an electric choke that controls the amount of mix that is fed into the engine.
Overall, all the specifications of this carburetor makes it quite an amazing device for both street cars and race cars alike.
9. Proform 67254 Street Upgrade Series 600 CFM Polished Aluminum Dual Inlet 4-Barrel Square Bore Mechanical Secondary Carburetor with Electric Choke
This is a mechanical secondary carburetor that will be good for light cars that have a manual transmission, big rotating cams and low rear end gears.
It has a 600 CFM, which makes it a great choice for a wide variety of cars.
Starting from race cars to street cars, the Proform 600 CFM carburetor works well for all, and it does especially well with stock 350 Chevy engines. However, keep in mind that this carburetor is not ideal for cars that have power adders.
The dual inlet system of this carburetor ensures that the car has optimum performance at all levels of RPM values, be they high or low. These are very suitable for vehicles with large displacement engines, because they have 4 barrels along with the dual inlet manifold system.
It also includes a choke – this is a tool that helps to control the amount of air and fuel going into the mixture. Thus, it helps to provide a completely balanced ratio in the mix, which will help you to get smooth acceleration and better drivability even when the vehicle is under a heavy load.
All the components of this 350 chevy carburetor is completely new, no refurbished items have been used to build this device. So you can expect to get a really long term service from it.
This is another 4-barrel carburetor that is ideal for both street cars and race cars. The advantage of having a square bore 4-barrel carburetor is that it optimizes its performance based on whether the RPM is at a low or a high level.
The barrels are divided into two primary and two secondary barrels. When the RPM is low, only the primary barrels open and the blades of the secondary throttle stay closed. This allows a lesser amount of air into the carburetor. As a result, the fuel that is released mixes with the available amount of air by a healthy ratio.
When the RPM increases, the secondary barrels also open to let more air into the carburetor. Then the higher amount of fuel that is released gets an adequate amount of air to form a healthy mix of air and fuel that helps the vehicle to reach great acceleration rates without any struggle.
The 650 CFM that is delivered by this carburetor will go a long way with stock 350 Chevy engines. But the performance won’t be that good with engines that have undergone extreme modifications. Also, if you pair this with a quality camshaft for 350 Chevy, then you’ll get really great output.
Things To Consider Before Buying Carburetor For 350 Chevy
The carburetor is placed on top of the engine in a way that ensures that air passes through the venturi before it reaches the cylinders of the engine. To make this happen efficiently, there are some factors of the carburetor that you have to look into.
This is one of the most important components of the carburetor. It regulates the amount of air that can flow into the carburetor and out to the cylinders of the engine. But more importantly, it gives speed to the airflow as it enters the inlet. It does this by the merit of its shape – the venturi is the section near the inlet of the tube that expands outwards to form a narrower space in the air passageway.
There are two types of chokes – electric and manual. Electric chokes are preferred by most people because they are more efficient and also better at regulation in winters as well as in summers. But if you are looking for a carburetor for 383 Stroker, then it might be a different case for you.
The choke is found towards the main inlet and above the venturi.
The role of the choke is to control the amount of air entering the inlet. If the choke is closed, less air gets in. And if the choke is open, more air gets in.
Some carbs have pre-installed choke valves while others don’t.
Look for carburetors with chokes if you want air to be drawn with greater regularity.
CFM, or cubic feet per minute, is a value that will tell you how much air will flow in through the main venturi. Here you have to do a bit of calculation. Get values for the volume of air circulated by all the pistons of the engine in the unit of cubic inches, multiply that by the maximum revolutions created in the cylinders per minute, and then divide that whole by 3456.
To be eligible with the engine, the carb CFM must be at a balance. Too high a CFM will create low RPM, whereas too low a CFM will stop the engine from delivering its true power.
Big carburetors can draw in more volumes of air and fuel to perfect fuel efficiency.
The size of the carburetor is an indicator of power in this case – bigger the carburetor, the more power it will ultimately deliver to the engine.
However, you can’t go as big as you want to.
A bigger carb will give you maximum horsepower at the top end RPM, but it will compromise on the low and mid-range RPM. In simple words, the engine won’t be able to deliver a constant supply of such a large amount of air during start up.
With too small a carb, the problem will exactly be the opposite.
Intake Manifold Vacuum
The manifold vacuum makes sure that the fuel and air mixture is evenly fed into all the cylinders of the engine
Without this, the engine will not be able to accelerate, and it will continuously misfire and result in a bad fuel economy.
There are different types of intake manifold systems to improve driveability. For a low to a mid-level range of RPM, use a dual-plane intake manifold and for mid to high-level RPM range, use a single-plane intake manifold system.
FAQs About 350 Chevy Carburetor
1. What CFM is best for a Chevy 350?
If the vehicle doesn’t have any power adders, then 600 CFM is enough. But if it has power boosters like the dual plane intake manifold systems, then the CFM valve will have to be in the range of 700 to 750 CFM.
2. Does a carburetor increase horsepower?
No, it doesn’t. It only helps the engine to produce the highest level of horsepower that it is capable of producing. For example, if a engine gets cols, a manual choke will give it a jolt. An electric one can jolt as well, but manual choke system is better at it.
3. How do I tell if the carburetor is not working properly?
If you see that the cylinders in the engine aren’t filling up all the way, then you probably need to get a bigger carb. You can also tell this apart if you see the car struggling to accelerate.
4. What is the best carb for chevy 350?
The best one for a Chevy 350 is Edelbrock 1406 Performer 4 Barrel Carburetor.
5. What is more dangerous, running rich or running lean?
Both will give you trouble and low acceleration. But if you run lean, there is a higher chance of the engine drying out and blowing up. So, in that regard, you are a bit safer while running rich.
Buying a carburetor is not a simple task, but we tried to keep it as simple as possible.
We hope you got your best carburetor for 350 chevy.
If you are indecisive, we recommend getting the Holley Model 2300 with the manual choke. If you prefer the electric choke, then the Edelbrock 1406 Performer 4 Barrel Carburetor is definitely a good choice. For best AFM disablers, and brake pads for Nissan Altima we have great articles that you can check out.
Once you buy the carburetor, make sure to maintain a proper cleaning procedure to keep it going long. Good luck!