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15 Best Throttle Body for LS6 Intake: Buyer’s Guide [2021]

Looking for the best throttle body for LS6 intake? You have come to the right place. LS6 intake manifold is a replacement for the OEM part with the same quality performance and significant features. If you need to change or replace the throttle body intake of your vehicle, you can do so without compromising any of the features. Even more, you can get better quality that exactly fits your vehicle. All you need to do is to browse the below products and pick up the best fit.

What is the best throttle body for LS6 intake?

The best option we have here is FAST LSXr 102mm intake manifold. This product has a large intake for a boosted performance. Moreover, the construction is ideal as it features lightweight, easy installation, and durability all at once.

Why FAST LSXr 102mm intake manifold is the best?

The throttle body intakes feature removable runners making it very easy to install. Also, the large air inlet and precise construction give higher horsepower and better throttle response. Further, FAST products are known for their high quality, so, you are backed by a brand name that will surely give you a guaranteed product.

Top 15 Best Throttle Body for LS6 Intake Reviews

01. FAST LSXr 102mm Intake Manifold – Best overall

 

 

Product Features

  • Polymer material
  • Removable runners
  • Modular design
  • 102mm air inlet

Product Specifications

  • Brand: FAST
  • Model: ‎‎146302B
  • Weight: ‎19.45 pounds
  • Dimensions: ‎28.1 x 16.4 x 10.1 inches

Product Description and Performance

Starting off the list with this throttle body intake manifold from the FAST store. It is a polymer intake featuring lightweight and durable at the same time. So, no need for heavy-duty metals to guarantee strength.

Intake manifolds should have a large inlet to allow more air to the engine, thus, increase the horsepower. That’s what this intake does. It comes with a large air inlet and long runners to boost the horsepower but keep the RPM torque low.

Moving to the shape and design, this intake is a top one. It has a black finish that looks very special when installed into any engine. It gives the vehicle a professional look while maintaining performance.

“In addition, it features a modular design which is easy to install and uninstall when needed. This way, you don’t need help as you can assemble this intake manifold on your own.”

Pros

  • Increases horsepower
  • High-quality finish
  • Lightweight
  • Easy to install

Cons

  • May need extra drilled holes

Recommendation

Fast LSXr intake manifold is the best throttle body for LS6 intake for those who want a very practical option. You can assemble and disassemble it thanks to the removable runner design. Also, you will get high performance and perfect design.

02. FAST 500004039B LSX – Best 92mm air inlet

 

 

Product Features

  • Universal fit
  • 92mm air inlet
  • Stainless steel bolts
  • Machined exterior

Product Specifications

  • Brand: FAST
  • Model: ‎‎54039B
  • Weight: ‎9.99 pounds
  • Dimensions: ‎27.9 x 16.4 x 9.7 inches

Product Description and Performance

With the same exquisite performance of FAST throttle body intake manifolds, this product is a 92mm air inlet. The inlet is an average size suitable for most vehicles. Thus, you can use it in whatever vehicle you own.

Furthermore, this throttle body is a universal fit. However, it fits perfectly and minimum modifications are required. Universal fit doesn’t mean any downgrading in quality. Hence, your car will deliver the same horsepower and RPM torque.

“Also, FAST manifolds are made of polymer. This material is better than aluminum as the latter comes with a heat sink effect. Yet, the polymer is a durable material and can last for years just like any other heavy metal.”

The package you receive includes the bolts, mounts, and mounting hardware. All of these items are made of the highest quality materials just like the throttle body itself.

Pros

  • Maintains high-quality performance
  • High-quality hardware
  • Durable construction

Cons

  • Not very easy installation instructions

Recommendation

For those who want to stick to the normal 92mm air inlet, this is the best option. FAST throttle bodies have the highest quality and the best performance you will get among all other manifolds.

03. Dorman 615-901 – Best for OEM specifications

 

 

Product Features

  • OEM construction
  • Precision-fit
  • Vehicle-specific
  • Low profile

Product Specifications

  • Brand: Dorman
  • Model: ‎‎615-901
  • Weight: ‎12.99 pounds
  • Dimensions: ‎‎23.33 x 13.85 x 7.37 inches

Product Description and Performance

Dorman is a known brand for car aftermarket pieces. So, if you think of getting the Dorman intake manifold, don’t hesitate. You will be getting one of the best options in the market today.

The throttle body is very well-designed. It is made with durability and strength in mind. Moreover, it fits the car factory parts precisely. Thus, you get a guaranteed product from a trustworthy company.

“The most significant feature about this throttle body is high-quality. You will notice this from the very first moment you unpack this item.”

Moreover, the precision fit means your throttle body will exactly match your vehicle specs as long as you get the right product. Thus, ensuring the highest and most stable performance.

Pros

  • Durable construction
  • Can be painted
  • Easy to install
  • OEM specs

Cons

  • May need modification for some vehicles

Recommendation

If you want a hassle-free throttle body with guaranteed construction and specifications, this one is for you. It is a reliable high-quality item with OEM construction and a perfect finish as well.

04. Holley 300-137 – Best for performance

 

 

Product Features

  • Cast aluminum material
  • Suitable for 2,500 – 7,000 RPM
  • Ports for EFI installation
  • Low carb flange height

Product Specifications

  • Brand: Holley
  • Model: ‎‎Holley
  • Weight: 14.05 pounds
  • Dimensions: ‎NA

Product Description and Performance

Holley has more than one intake manifold to offer, this one is the best throttle body for LS6 intake we found from this brand. The product has a very good design with a low-carb flange. This provides a perfect hood clearance which is one of the best found among all throttle body intake manifolds.

Furthermore, the manifold is made of aluminum. Although there are materials better than aluminum, it is still a perfect material to go for. Even more, this manifold has a cast aluminum material with enough thickness to improve durability.

Another important feature is the weight which is considerably light. This allows for easy installation of the manifold.

“Also, the performance is something you will appreciate the most if you get this manifold. It is capable of producing higher horsepower for RPM range 2,500-7,000 RPM.”

Pros

  • Hood clearance
  • Unique design
  • Constant wall thickness

Cons

  • May need installation hardware

Recommendation

If you want the best hood clearance, this manifold is the one to choose. Adding to the constant thickness of the construction material, the installation and fitment of the manifold into its compartment is beyond perfect.

05. GM Genuine Parts 12580420 – Best for price

 

 

Product Features

  • Fits all GM vehicles
  • 92mm air inlet
  • Distribute combustion mixture evenly
  • OEM specs

Product Specifications

  • Brand: GM
  • Model: ‎‎AC Delco
  • Weight: ‎15.65 pounds
  • Dimensions: ‎ 28.25 x 18.12 x 12.38 inches

Product Description and Performance

For one of the lowest-priced throttle bodies, yet, with the highest quality, here is an ideal option from GM. The throttle body will give you the performance you need but at a very low price than other options.

“Similar to any throttle body, it contains a number of cylinders and an air inlet. The inlet will allow air to pass to all cylinders Thus, performance is kept at a very good level. “

Since it is a GM product, it is suitable for GM vehicles and the best replacement for the original GM intake manifold. Despite the price, it comes with the OE specifications. Thus, you get the same quality, reliability, and longevity.

One thing you might need to get with this manifold is the gaskets as the package doesn’t include them. However, considering the low price, you won’t still pay too much money.

Pros

  • Cheap price
  • Good performance
  • Fits many vehicles

Cons

  • Needs gaskets
  • Not very durable material

Recommendation

If you have a GM vehicle and want a replacement throttle body without paying too much, go for ACDelcofrom GM. Just don’t forget to double-check that it fits your vehicle.

06. FAST LSXr 102mm LS1/2/6 Intake Manifold – Best for throttle response

 

 

Product Features

  • 102mm air inlet
  • Polymer material
  • Replaceable runners
  • Vehicle specific

Product Specifications

  • Brand: FAST
  • Model: ‎‎LSXr 102mm – 146302B-KIT
  • Weight: ‎29.8 pounds
  • Dimensions: ‎‎30 x 23 x 21.5 inches

Product Description and Performance

Another product from FAST store with the same quality features and reliable construction. This time with a 102mm air intake manifold that comes in a complete set of all the necessary hardware for installation.

Similar to the above options from FAST store, the manifold features a polymer material that dissipates heat better than aluminum ones. In addition, the runners are removable and replaceable easily. This is a feature FAST throttle body intakes are characterized by.

“Another thing this intake feature is the significant change in the horsepower you will notice. Since it is a wide mouth opening manifold with a coolant material, the performance is doubled and tripled. This appears in the throttle response and torque particularly.”

Pros

  • Dissipates heat
  • Black finish
  • Boosts performance

Cons

  • Heavyweight

Recommendation

A good bargain for those who want to get the throttle body and the installation kit in the same package. When you get both, you ensure high quality in every piece.

07. FI-TECH LS1/LS2/LS6 KT – best for complete kit

 

 

Product Features

  • 92mm air inlet
  • Low profile
  • 36 lb flow inject
  • Vehicle specific

Product Specifications

  • Brand: ‎FI-TECH
  • Model: ‎‎ 70001
  • Weight: ‎NA
  • Dimensions: ‎ 28 x 16 x 10 inches

Product Description and Performance

You might not have heard about this brand before but FI-TECH really nailed it when it comes to LS6 intakes. This manifold kit features a self-tuning system that supports up to 500 horsepower.

Also, the kit includes everything you will need to install the throttle body. It is one of the easiest to install throttle body intakes. In addition, everything is nearly included, thus, you won’t need to buy any other additional parts.

“However, the only problem you might face is that the price is quite expensive for many people. But we always say that investing in a high-quality product that lives is better than buying cheap products and heaving to replace them more often.”

Pros

  • Very easy to install
  • A complete kit
  • No modification required

Cons

  • Very expensive

Recommendation

If you want to learn and install the manifold yourself, this product is the right one for you. You can install everything yourself using the complete hardware kit. Even more, you won’t probably need to do modifications as cutting or drilling.

08. ATP Automotive Graywerks 106001 – Best for heat dissipation

 

 

Product Features

  • Nylon parts
  • Metal-cert EGR port
  • Spacer pipe for heat dissipation
  • Reinforcing ribs

Product Specifications

  • Brand: ‎ ATP Automotive
  • Model: ‎‎106001
  • Weight: ‎8 ounces
  • Dimensions: ‎19.8 x 8.8 x 7.8 inches

Product Description and Performance

Here comes a throttle body for LS6 intake with a special metal-cert sleeved EGR port. This, along with the spacer pipe, will allow for natural heat dissipation and prevent any breakdowns of the engine. Also, the nylon parts increase heat stability. Thus, it is not negatively affected by heat.

Moreover, the manifold we have has reinforcing ribs. The ribs make it more durable and resemble the OEM ones.

“So, if you would like a replacement for your intake manifold, this is a good option. The package includes everything for installation that you won’t need to pay for anything else including installation. It is already easy to install and you can do it yourself.”

Pros

  • Installation hardware included
  • Allow good heat dissipation
  • OE construction

Cons

  • May not fit some vehicles

Recommendation

This manifold is a good start for beginners. However, it doesn’t fit all vehicles. Thus, you need to check your vehicle before you go for this model.

09. LSXrt 102mm Intake Manifold for GM – Best for horsepower

 

 

Product Features

  • 102mm air inlet
  • Compatible with 90, 92, and 102mm
  • Polymer material
  • Removable runners

Product Specifications

  • Brand: ‎‎‎FAST
  • Model: 146602B
  • Weight: ‎21.8 pounds
  • Dimensions: ‎‎ 24.9 x 16 x 13.4 inches

Product Description and Performance

This throttle body intake is supposedly 102mm, however, it can work with 90, 92, or 102mm throttle bodies. This allows for better airflow and thus, giving better performance.

Not something to wonder about as it is a FAST intake. Thus, expect the best quality and superior performance gains.

The throttle body intake can deliver up to 25hp over the original hp you already get. Further, the removable runners’ design coming with all FAST intakes adds more hp. So, expect the highest engine performance when you install this manifold.

“Above all, the installation of this piece is very easy although it is a very complex and high-quality construction. Hence, you get what you pay for.”

Pros

  • High hp gains
  • Fits different throttle bodies
  • High-quality materials

Cons

  • Expensive price

Recommendation

If all you need is high performance and you don’t mind paying much money for this, then, choose one of FAST products. This one is a great option to go for.

10. Edelbrock 7118 Performer – Best for longevity

 

 

Product Features

  • Aluminum material
  • Works within 1, 500 to 6, 500 RPM
  • Special ignition control module and throttle bracket
  • Smooth exterior

Product Specifications

  • Brand: ‎‎Edelbrock
  • Model: 7118
  • Weight: ‎23.4 pounds
  • Dimensions: ‎NA

Product Description and Performance

Have you ever heard about Edelbrock manifolds? If you are a car enthusiast, you should have heard about this brand before.

Edelbrock throttle body intake is one of the most powerful and durable manifolds you can buy. It can provide an unmatched performance you won’t get except with this manifold.

Furthermore, the construction of this manifold is pure aluminum. This adds to its durability as well. In addition, its design doesn’t allow for heat accumulation even though it is aluminum. Thus, you get both heat dissipation and durability.

“The design also distributes the combustion mixture evenly between engine cylinders which improve the combustion process. Thus, this intake manifold is the best choice for many motors including the LS6.”

Pros

  • Sturdy construction
  • Even distribution of air
  • Perfect ignition control module

Cons

  • Some installation hardware is missing

Recommendation

If you have a car with an LS1 or an LS6, this throttle body intake will work for you. It is also a guaranteed brand name known for the durability and longevity of its products. Thus, never hesitate to go for Edelbrock.

11. A-Premium Upper Intake Manifold Replacement – Best for fitting many vehicles

 

 

Product Features

  • Vehicle-specific
  • Comes with gaskets and seals
  • Plastic parts
  • EGR ready

Product Specifications

  • Brand: ‎‎A-Premium
  • Model: APIM009C
  • Weight: 15.87 pounds
  • Dimensions: ‎ 21.25 x 13.75 x 11.5 inches

Product Description and Performance

This throttle body intake manifold is a vehicle-specific one. However, it is suitable for many vehicles. So, chances are that you will find your vehicle from the ones this throttle can work on.

“If you are lucky enough, then go for A-premium manifold as it is good in terms of function and price. Thanks to the manufacturers of this piece, you will get an advanced performance at a very cheap price.”

Apart from the price, the design of the manifold is also superior. It works for evenly distributing air into all air inlets. It will fit perfectly under the hood offering good hood clearance. Thus, you get everything you may get from highly-priced manifolds.

Pros

  • Fits many vehicles
  • Complete installation set
  • Cheap price

Cons

  • Lower-quality material

Recommendation

For low budgets, this is an ideal choice as you won’t pay too much but get a lot. The package also includes all installation hardware, so, it is a good value for money.

12. GM Genuine Parts 12630859 – Best for precision fit

 

 

Product Features

  • Lightweight
  • Low profile design
  • Suitable for specific vehicles

Product Specifications

  • Brand: ‎‎GM
  • Model: ACDelco 12630859
  • Weight: 11.26 pounds
  • Dimensions: ‎28.1 x 18.1 x 12.5 inches

Product Description and Performance

Another throttle body intake from GM with the same quality features and functions of GM aftermarket pieces. Having these features, the manifold will work for many GM vehicles. Hence, it is the choice you need if you own one of the compatible vehicles.

What’s more, it has a nice black finish that protects the manifold from one side and gives it a nice look from the other side.

“Another advantage for this manifold is the OE specifications. The intake is designed to perfectly fit where you install it. Thus, you won’t need to do any modifications to get this manifold installed into your car.”

Pros

  • Good hood clearance
  • Black finish
  • Fits perfectly
  • Cheap

Cons

  • No installation hardware

Recommendation

We recommend GM throttle body intakes for those who own GM vehicles. This one is from the best options that resemble the OE parts in most of the components. Thus, you will get the same performance as the original parts.

13. GM Genuine Parts 19330172 – Best for value for money

 

 

Product Features

  • Comes with seals
  • Thermoplastic, aluminum, and iron materials
  • Black finish
  • Precision-fit

Product Specifications

  • Brand: ‎‎GM
  • Model: ACDelco19330172
  • Weight: 8.14 pounds
  • Dimensions: ‎19.87 x 13.84 x 9.59 inches

Product Description and Performance

GM has lots of premium products to offer today. Here we have another option from GM to widen your choices as long as you own one of the GM vehicles.

The throttle body intake we have this time is composed of iron, aluminum, and thermoplastic. This composition offers durability in addition to functionality at the same time. It doesn’t trap heat and gives the sturdiness you need for such an important part of your engine.

“Like any other GM aftermarket piece, this manifold is constructed to fit the OE specifications. Thus, you won’t modify anything. Moreover, it comes with seals but you may need to purchase gaskets.”

Pros

  • High-performance gains
  • Good value for money
  • Factory specs

Cons

  • No gaskets

Recommendation

One of the best GM options with seals to easily install it into GM vehicles with the original factory parts. Choose GM products if you own a suitable vehicle and want to get the highest quality ever.

14. DIMAIER Intake Manifold – Best for warranty

 

 

Product Features

  • 102mm air inlet
  • 12 months warranty
  • Compatible with LS1, 2, and 6
  • Aluminum material

Product Specifications

  • Brand: ‎‎DIMAIER
  • Model: DIMAIER Intake Manifold
  • Weight: 19.26 pounds
  • Dimensions: ‎‎22.99 x 13.54 x 10.24 inches

Product Description and Performance

Not a very known brand name as Edelbrock and FAST, yet, it provides the same performance and quality of parts.

The throttle body intake from DIAMIER fits 102mm openings. We believe this is a perfect throttle opening for a good air inlet that enhances the performance you need.

The package includes everything starting from the throttle body to the gaskets. Also, the price you will pay for all these items is not that much. Thus, you are paying for something worth it.

“When you purchase this item, you will be packed with a 12 months warranty. This gives you a guarantee that you are paying for something that is worth it.”

Pros

  • Perfect fit
  • Complete kit
  • Easy to install

Cons

  • Lower power gains

Recommendation

One of the best GM options with seals to easily install it into GM vehicles with the original factory parts. Choose GM products if you own a suitable vehicle and want to get the highest quality ever.

15. Top10 Racing Intake Manifold – Best for performance gains

 

 

Product Features

  • 102mm air inlet
  • Cast aluminum material
  • Silver finish

Product Specifications

  • Brand: Top10 Racing
  • Model: ‎IM1002-S-RH
  • Weight: ‎16.81 pounds
  • Dimensions: ‎‎ 23.5 x 13.8 x 10 inches

Product Description and Performance

Finally, we have the Top Racing throttle body intake with a 102mm opening that fits smaller openings than the 92mm one.

This intake performs as any other high-quality option from reliable brands. In addition, the intake will never bend even with the highest performance levels.

Speaking of the performance, the intake enhances the throttle response and horsepower significantly. The overall performance you will get is higher in a noticeable way.

“Furthermore, you get a complete set with all small parts to install the intake precisely. And yet, you will pay a good amount of money that won’t break the wallet but ensures you get something durable and functional.”

Pros

  • Complete kit
  • Good value for money
  • Sturdy construction

Cons

  • Not the best hood clearance

Recommendation

One of the sturdiest throttle body intakes you can get. Moreover, you get all the necessary hardware for installation at a good price.

Buying guide

If you want a replacement for the throttle body for LS6 intake manifold, you can find many options above. However, if you still need to know more, here is a buying guide you may refer to in order to get the best option in the market. Check the below points to know the best throttle body for LS6 intake.

Fitment

Throttle bodies are not specific for every single vehicle. In fact, there are manifolds that feature a universal fit. Thus, you can use them for any vehicle. However, you always need to check if the throttle body you are purchasing is a precise fit or not.

Sometimes, you might have to do some modifications. This is not a big deal as long as the manifold you purchased is a high-quality one and will give you the performance you need.

Material

Throttle body manifolds come in different materials where polymer and aluminum are the best ones. Polymer is lighter in weight and doesn’t get hot. Aluminum is very durable but heavier than polymer. Just make sure the product you get is very well-constructed to avoid changing it every now and then.

Performance

Throttle body manifold intakes can upgrade the performance significantly. The best manifold intakes will increase the horsepower and throttle response. Similarly, they should work within an acceptable RPM range.

Thus, before you purchase any throttle body manifold, take a look at the performance features it provides. If you need high-performing manifolds, you might need to spend more money to get one of the top manifolds with a wide air inlet.

Runners

Manifolds come with either long or short runners. Runners are related to the plane type where dual-plane engines have long runners but single plane engines have short ones.

The thing we might recommend here is to go for removable runners like those available with FAST manifolds. These are easier to install and more practical as well.

Hood clearance

Hood clearance gives the vehicle an overall nice look and also racers prefer this clearance. The throttle body manifold you get should maintain this hood clearance. You can do so by getting a manifold that matches the exact specifications of your original one.

Further, you can check the measures of the original manifold and get a new one with the same measurements. Measuring the manifold is very beneficial in case you will go for universal-fit manifolds that should fit any car.

On the other side, if in the end, you had to buy a throttle body intake manifold that doesn’t provide the hood clearance you want, there is a solution. You can buy adjust the manifold to get the clearance you want.

FAQs

What does a throttle body intake manifold do?

The intake manifold’s main job is to provide the engine with a combustion mixture for the combustion process to produce energy. Thus, it is an integral part of any vehicle engine. The manifold comes with tubes connected to the engine to ensure the even distribution of combustion mixture to all engine cylinders.

When do I have to check the throttle body intake?

Similar to any car parts, throttle body intakes need checking and changing every now and then. There are a number of signs that indicate your vehicle’s manifold might have a problem. These include:

  • Leaks on top of the engine compartment; either oil or water leaks.
  • Significant downgrading in the car performance as lower horsepower or throttle response.
  • An unusual noise coming from the engine or a strange smell of fuel combustion.
  • Increased temperature of the engine or a rising vapor.

How to maintain the throttle body intake?

First of all, you need to know the expected lifespan of the throttle body. Also, the recommended maintenance schedules of all car parts including the throttle body and the whole engine components.

Once you know these, make sure to check the parts and do proper maintenance when required. Also, change the engine oil and use high-quality types to maintain the performance.

For the throttle body itself, tighten the bolts and install them firmly. If you find it difficult to install the manifold, then, go to a professional to get it installed. Before you do so, ensure that it is the right product for your car.

One last thing to do is to pay close attention to your car indicator lights and warning signs. If you experience any of the warning signs, you need to figure out the problem immediately and solve it before it becomes more complex.

Conclusion

Throttle body intake manifolds are a pivotal part of the car combustion system. Thus, you need to spend some time searching and knowing everything about these parts. The best throttle body for LS6 intake is the one providing a top performance while maintaining the construction quality and gas mileage. This equation is easy to reach as long as you do the proper research. Thus, take your time reading the above review to reach the best product for your vehicle.

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