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Best Throttle Body For ls6 Intake

Top 9 Best Throttle Body For ls6 Intake 2023 (Reviews & Buying Guide)

One of the most essential components of the air intake system of a vehicle is the throttle body. A throttle body is responsible for controlling the flow of air into the engine. Between the air intake and the engine manifold, the throttle body is found where it provides the needed amount of air.

Editor's Pick
FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black
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FAST 54039B LSX Black 92mm Intake Manifold
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GM Genuine Parts 12580420 Intake Manifold Assembly , Black
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Holley EFI 300-137 Single Plane EFI Intake - GM LS1/LS2/LS6
FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black
FAST 54039B LSX Black 92mm Intake Manifold
GM Genuine Parts 12580420 Intake Manifold Assembly , Black
Holley EFI 300-137 Single Plane EFI Intake - GM LS1/LS2/LS6
Editor's Pick
FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black
FAST LSXr 102mm Intake Manifold for LS1, LS2, and LS6 (146302B), black
Good Choice
FAST 54039B LSX Black 92mm Intake Manifold
FAST 54039B LSX Black 92mm Intake Manifold
Don't Miss
GM Genuine Parts 12580420 Intake Manifold Assembly , Black
GM Genuine Parts 12580420 Intake Manifold Assembly , Black
Also Consider
Holley EFI 300-137 Single Plane EFI Intake - GM LS1/LS2/LS6
Holley EFI 300-137 Single Plane EFI Intake - GM LS1/LS2/LS6

A specific proportion of air and fuel is needed in the engine for combustion. Hence, the throttle body adjusts the airflow.

What is the Best Throttle Body For ls6 Intake?

The FAST 146302B is a renowned throttle body and is praised by the professionals for its efficient functioning. It is the best throttle body for ls6 intakes.

Why FAST 146302B is The Best Brand For ls6 Intake Manifold?

The FAST 146302B throttle body is the best brand for ls6 intake manifold for the following reasons:

Maximized Airflow This throttle body is capable of providing maximized airflow and increased power while ensuring no compromise on the drivability.
Polymer Material It is manufactured with advanced polymer which ensures better strength and durability, better heat dissipation along with lighter weight as compared to aluminum. 
Modular Design Its modern modular design allows quick disassembly of the throttle body. The parts can be easily disassembled according to the need of the user.

Let’s now move on to the best throttle bodies for ls6 intake that we have picked out for you all.

Top 9 Best Throttle Body For ls6 Intake

01. FAST 146302B

FAST 146302B


The FAST 146302B is manufactured with advanced polymer which makes it distinct. As compared to the aluminum throttle bodies, the polymer one has greater strength, durability and a lighter weight. Heat dissipation is also improved with which the airflow is optimized.

 The sleek black finish of this throttle body looks tremendous when installed on LS engines, especially LS6 and makes the vehicle enthusiasts go gaga over it.

Along with that, it comes with a larger air inlet which delivers increased horsepower while maintaining low-RPM torque.

With the modern modular design, it becomes super easy to disassemble. The user can disassemble with minimum help in case there is a need of replacement.

Vehicle enthusiasts praise this throttle body for its removable running design, optimized performance and stunning look! We highly recommend it for its amazing functioning.

The only drawback of this throttle body is that the user may need to drill holes for sensor mounting. Drilling holes may be extremely costly.

Highlighted Features

  • 102mm air inlet
  • Modular design
  • Maintains low-RPM torque
  • Cooler than aluminum
  • Available in three port configurations
  • Low-restriction design
  • Optimizes airflow
  • Attractive finish
  • Need holes for sensor mounting


02. Dorman 615-900

Dorman 615-900


Looking to get your hands on a durably manufactured throttle body? If yes, then the Dorman 615-900 is one of finest throttle bodies that you can have!

The Dorman 615-900 is engineered with precision, tested to ensure the highest quality for the user and designed to meet the top-notch standards.

It meets the fit and the functioning of the specified vehicles that it is designed for. It ends up being an investment for the vehicle owners mainly because its reliable construction and outstanding performance.

Some users may end up facing issues with the fit of various throttle bodies. However, this one is built by industry leaders to give a trustworthy design and fit to the users.

Even though it is designed to fit perfectly, some of the users may require modification to steam pipes to attain maximum output. This is the only disadvantage of this throttle body.

It is a perfect blend of extra ordinary performance, incredible finish and trustworthy fit.

Highlighted Features

  • Low profile valley cover bolts
  • EGR provision
  • OEM performance
  • Hassle-free installation
  • Durable design
  • Precision-engineered
  • Some users may have to modify it


03. FAST 54039B


FAST 54039B


Before we go into the details of FAST 54039B, we want to highlight the fact that this throttle body comes with a universal fit.

Unlike many other “vehicle specific” throttle bodies, it is capable of fitting to all vehicles with minimal modification. All the users who have been in search of throttle bodies with universal fit, need to check this one out.

This throttle body is an amalgamation of all the features that may be needed on street or in race. Bottom-end drivability and high RPM power are both provided by this throttle body. The easy bolt-on installation allows the user to install it or disassemble it with minimum hassle.

It is manufactured with high-quality polymer which prevents the hint sink commonly seen in aluminum throttle bodies.

Along with that, it comes with bolts made with stainless-steel and mounting hardware for greater durability.

This stunning baby is capable of providing high performance and efficiency right out of the box!

The only thing that the users may not like about this high performing product is that its instruction manual may be slightly complex and confusing for some people.

Highlighted Features

  • Better throttle body sealing flange
  • Improved O-gasket
  • Corrosion-free stainless-steel bolts
  • Threaded insert throttle body
  • Easy to install
  • Maximizes potential of the engines
  • Universal fit
  • Requires less modification
  • Complex instruction manual


04. ACDelco 12580420

GM Genuine Parts 12580420 Intake Manifold Assembly


Need durability, reliability and high-quality in a throttle body for ls6 intake? If yes, then the ACDelco throttle body is worth a try because of its exceptional features and performance.

This intake manifold evenly distributes the mixture of combustion into all intake ports. Since it provides the appropriate proportion of mixture, combustion takes place properly.

It is designed specifically while keeping the needs of the users in view. Hence, it fits, assembles and functions amazingly.

What we love the most about this product is that it uses enhanced technology to function.

With this throttle body, coolant leaking, and poor engine performance can be avoided. It doesn’t come with gaskets which means that the user will have to get them separately.

Highlighted Features

  • Evenly distributed mixture to each intake port
  • Gold label packaging
  • OEM quality
  • Large intake opening
  • Designed to fit properly
  • May require new gaskets


05. Holley 300-137 

Holley 300-137 


Holley is a well-known brand in the engine industry. It is an industry leader when it comes to production of engine parts.

The unique thing about the LS6 intakes made by Holley is that they are quite light weight as compared to other intakes.

This is mainly because Holley uses advanced casting technology. We are fond of this intake because its design prevents loss of horse power and maximizes the performance.

It is manufactured with cast aluminum and has a consistent thickness of walls throughout. Along with that, it comes with strong mounting flanges.

A broad torque curve is produced due to a constant cross-sectional area.

This throttle body has a unique shape it does not have an attractive finish like the polymer throttle bodies. However, even though it is made with aluminum it doesn’t cause heat dissipation issues.

The only drawback of this is that it doesn’t come with gaskets so the user will have to purchase them separately.

Highlighted Features

  • Ideal for centrifugal blower
  • Comes with machined ports for EFI installation
  • No fabrication is needed
  • Anodized billet fuel rails
  • Better hood clearance
  • Prevents power sacrifice
  • Durable construction
  • Lightweight
  • It doesn’t come with gaskets


06. LSXr 102mm

LSXr 102mm


The LSXr 102mm is known for improving the overall performance of the engine. It does so by improving throttle response, torque and airflow. It comes with interchangeable intake runners that allow tuning of the power band.

We are quite impressed by its fine polymer material. Cheap aluminum manifolds are unable to properly dissipate heat.

They end up trapping heat with which the efficiency of the manifold is decreased. The airflow is not evenly distributed because of this.

The polymer material of this manifold cools down and prevents heat trapping with which the airflows efficiently.

The Lexar intake and the big mouth throttle not only work well but they also look stunning when installed.

This Lexar has a super sleek black finish. It also gives the users an opportunity to add billet fuel rails to it.

High performance through increased horsepower and throttle response is provided by the Lexar intake but it has on drawback.

As compared to other throttle body intakes, this one is very heavy. It is almost double the weight of others. Otherwise, it works well, looks amazing and best of all doesn’t compromise the horsepower.

Highlighted Features

  • Natural billet aluminum finish
  • Made with polymer materials
  • Interchangeable intake runners
  • 102mm throttle body bore
  • Reduces heat soak
  • Increase horsepower
  • Allows tuning of power band
  • Heavy weight





The FI-TECH intake manifold kit is something that can get the user started right out of the box. It is a self-tuning induction system that is capable of support about 500 engines. It is designed for users who are fond of do-it-yourself projects.

The coolest thing about this system is that it comes with everything that the user may need for installation.

Also, there is no need of modification, or of drilling holes or cutting and splicing. This system has everything ready for the convenience of the user.

This system claims to be the fastest in terms of installation as compared to any other available on the market.

If you are someone who wants to install the manifold kit right away without the hassle of buying individual pieces then you certainly need to invest into the FI-TECH manifold system.

The only thing that may not be appreciated about this system is its heavy weight. The installation may not be as smooth because of the heavy weight. Lighter weight throttle bodies are much easier to install.

We highly recommend it because of the convenience it provides and because of the easy installation. No doubt, the performance is amazing as well.

Highlighted Features

  • 92mm cable operated throttle body
  • 36 pounds flow injec
  • Low profile fabricated aluminum intake
  • No drilling or splicing
  • Individual pieces are not needed
  • Fast installation
  • Heavy weight


08. ATP 106001 


ATP 106001



The ATP 106001 engine manifold is basically a manifold used in replacement. It comes with special ports such as the EGR port. This port is metal-cert sleeved. It even has a spacer pipe that allows proper dissipation of heat. It is also capable of preventing repeat failures.

The overall heat resistance of this intake is increased due to the heat stabilized nylon. One feature that the users will find very unique is that it is molded structurally. The structurally molding has reinforcement ribs.

It comes with everything that may be needed to get it started. Spacer pipes, gaskets, pvc cover, vacuum hose bracket and all other essentials are included in this kit. As soon as you get it, you can easily install it because there is no need to buy different pieces separately.

The drawback of this manifold is that it may not properly fit some of the vehicles and the user may have to make modifications to it. After the modifications, it will be able to fit.

Highlighted Features

  • Metal-cert sleeve
  • Heat stabilized nylon
  • Prevents cracks and internal coolant leaks
  • Vacuum hose connector
  • Comes with everything that is needed for installation
  • Prevents heat build up
  • Ensures normal operation of the vehicle
  • It may not fit some vehicles properly


09. Edelbrock 711871 

Edelbrock 711871 Performer RPM LS1 Intake Manifold Non-EGR


At last, we have the Edelbrock 711871, a powerful and durable manifold. It is a vehicle specific manifold intake hence it cannot fit to all the vehicles.

It is manufactured with aluminum and is quite durable. With its unique shape, it is capable of evenly distributing the airflow leading to proper combustion.

Even though it is made with aluminum, it doesn’t trap heat as much as others. We highly recommend it for its powerful performance.

Highlighted Features

  • Aluminum construction
  • Vehicle specific
  • Powerful
  • Durable
  • It does not come with gaskets


After looking at the top throttle body intakes, it is now time to move on to the buying considerations.

Buying Considerations Of Best Throttle Body For ls6 Intake

Fit and compatibility

The first thing that must be considered when buying a throttle body intake is its fit and compatibility. There are two main types of fits when it comes to throttle body intakes:

Universal Fit The manifold that can be adjusted to almost all the vehicles with no or minimal modification are the ones that have a universal fit. A very limited number of intakes have a universal fit.
Vehicle Specific The manifold that can be adjusted to specific models of vehicles no or minimal modification are the ones that are vehicle specific. Majority of the manifolds are vehicle specific. The throttle bodies can fit to specific models of engines.

It is essential to find a throttle body manifold that is compatible with the engine of your vehicle. Otherwise, it will end up being a waste of time and energy.


In the construction of throttle bodies, two major materials are used. One is aluminum and the other one is polymer.

Aluminum Material Polymer Material
Typically, aluminum has been used in the construction of throttle bodies. Aluminum does not dissipate heat well, instead it traps heat.
Trapped heat with lower the efficiency of the throttle body. Aluminum is a durable material but it has a limited fatigue strength.
Polymer materials are more advanced and have recently been used in the construction of throttle bodies. Polymer material allows cooling off and prevents heat from being trapped.
Well dissipated heat will increase the efficiency. Polymer is quite durable and is known to outlast aluminum.

Even though both the materials are durable and both ensure good functioning of the throttle bodies, the poly material allows heat dissipation which improves the overall performance. Hence, if the user desires for overall high-performance and life then polymer material is better than aluminum.


Typically, a throttle body for LS6 intake weighs around 8-16 pounds. However, there are some that weight a lot more than that.

Some weigh around 30 pounds. A heavier throttle body may be difficult to disassemble or install without help.

With the advancement in technology, throttle bodies that give tremendous performance are produced with polymer materials.

The polymer materials are much lighter than aluminum hence, the throttle bodies end up being light in weight.

It is always better to get hands on the advanced yet lightweight option but if you don’t have a problem with the weight then you can go ahead and buy the heavier one.


Throttle Body For ls6 Intake

Then comes the design, the throttle bodies are available in different designs. Some occupy less space while others are more spread out.

As long as it evenly distributes the airflow, there is not much difference in the designs. But, if the user is big about the appearance of the throttle body, then there are a number of designs available.


Then comes the finish of the throttle bodies. Usually, the ones that are made with polymer materials have a black finish.

The black finish is super sleek and shiny. Car enthusiasts have a lot of appreciation specifically for the black shiny finish. It looks stunning when installed in the vehicle.

On the contrary, the aluminum throttle bodies don’t really come with a finish. They are most of the times silver in color and some of them can be found in gold too.

The aluminum throttle bodies can be painted according to the need. Some people install them without painting. If you are someone who is fond of sleek finish then the throttle bodies made with polymer materials are the ones for you.


Most of the times, the throttle bodies fit to the engines that they are designed for without any need of modification and hassle.

However, quite rarely, it is possible that you may need to drill holes, adjust pipes or make any other modifications to the throttle body.

These modifications may not be a problem for people who have prior experience of working with car engines and their parts.

However, if the user doesn’t have prior experience, then it can be extremely hectic. Make sure to get the throttle body that fits without any modification.

Installation and disassembly


The throttle bodies that have a modular design can be easily installed and disassembled. Whenever there is a need of replacement, the parts can be disassembled.

On the contrary, there are some designs of throttle bodies that don’t allow easy installation. So, be sure to check the ease of installation.

Durability (Cracks and Leaks)

The durability of the throttle body is as important as its functioning. This is because, the throttle body is responsible for providing the right proportion of air for combustion to the engine.

If the throttle body is not durable, it will end up having leaks and cracks in the long run. This will eventually disturb the flow of air and combustion will be disturbed.

To avoid any accidents and long-term damage to the engine, it is necessary to get a throttle body that is durable.

The ones that are made with aluminum are durable along with the ones that are made with polymer. Although, polymer outlasts the aluminum throttle body.


It is important to consider the horsepower maintained or increased by the throttle body. Some of the throttle bodies are capable of compromising the RPM and horsepower.

Hence, it is essential to get your hands on those that don’t compromise the performance of the vehicle.


Lastly, you need to consider the price of the throttle body. The throttle bodies come in varying price.

This is because they have different models, materials, features, and designs. Due to the difference among each, the price varies as well. So, you get affordable options along with expensive ones.


The idea behind the creation of this piece of information is to help you all in finding the best throttle body for LS6 intake.

There are a number of throttle bodies available but we picked out the best ones specifically for LS6 intake. We hope that it will help you in making a rational decision.

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