7 Best 92mm LS Throttle Bodies (Researched and Compared)

Upgrading to a 92mm throttle body is a common path for LS engine builders seeking more airflow without sacrificing low-speed drivability. We researched and compared seven of the most popular options on Amazon, evaluating each on manufacturer specifications, published industry standards, and aggregated owner feedback. Our goal is to help you choose the right balance of performance, durability, and value for your specific build.

Note that a 92mm throttle body is typically used on LS3, L92, LS7, and aftermarket intake manifolds; check your intake flange and bolt pattern before purchasing. All scores are based on our evaluation of available data and owner experiences, not hands-on lab testing.

1. Holley 112-587 92mm Throttle Body: Top Pick

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The Holley 112-587 is widely regarded as a benchmark for 92mm throttle bodies. In our research, owner feedback consistently highlights its immediate throttle response and no-hassle installation on LS3/L92 intakes. The billet aluminum construction and hard-anodized bore resist wear and maintain consistent airflow over time. We compared its flow numbers to other units and found it delivers among the highest CFM ratings in its class, which translates to measurable gains on naturally aspirated and moderately boosted builds.

However, its premium pricing is a real limitation. For builders on a tight budget or those with older LS1/LS2 intakes requiring an adapter plate, the additional cost may not be justified. We recommend this throttle body for enthusiasts who prioritize drivability and quality fitment and are already running an LS3 or compatible intake manifold.

• CNC-machined billet aluminum with hard-anodized bore for low friction and long life
• Includes high-quality TPS and IAC sensors pre-calibrated for plug-and-play installation
• Designed for LS3/L92 intake manifolds; adapter may be needed for LS1/LS2

Pros: Smooth throttle response across the entire RPM range; Precise fitment on LS3 manifolds with no modification
Cons: Premium pricing may not suit budget builds

2. FAST 92mm Throttle Body: Best for High Horsepower

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The FAST 92mm throttle body is a favorite among engine builders targeting big power numbers. We evaluated its flow characteristics from published data and owner reports, and it consistently delivers strong top-end gains. The cast aluminum body is durable, though not as visually polished as billet units. When paired with FAST intake manifolds, the combination is proven on many dyno sheets we reviewed.

On the downside, several owners reported that the idle quality can be finicky on stock ECUs without a custom tune. Additionally, the cast finish may show blemishes over time. We recommend this throttle body for high-horsepower builds where absolute airflow is the priority, and where a professional tune is part of the budget.

• Designed specifically for FAST LSXR and LSXRT intake manifolds for optimal flow matching
• Large bore taper improves airflow at high RPM, supporting 600+ horsepower builds
• Includes TPS and IAC sensors with weatherpack connectors

Pros: Excellent high-rpm airflow for forced induction or high-compression builds; Direct bolt-on to FAST intakes without adapters
Cons: May require tuning to avoid idle hunting on stock ECUs

3. BBK Performance 92mm Throttle Body: Best Value

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BBK Performance offers a solid 92mm throttle body that balances cost and quality. In our comparison of owner feedback, many appreciated the polished billet look and the included adapter kit that allows it to fit LS1, LS6, and LS2 intakes. The throttle response is noticeably improved over stock, though not as crisp as the Holley unit. We found that the flow numbers are adequate for most street and mild track builds up to about 500 horsepower.

The primary weakness is the adapter plate system. Some users reported difficulty achieving a perfect seal, leading to unmetered air leaks. This can cause rough idle and requires careful attention during installation. We recommend this throttle body for budget-conscious builders who are comfortable with minor fitment adjustments and want a reliable upgrade without breaking the bank.

• Affordable billet construction with a polished finish
• Compatible with a wide range of LS intakes using included adapter plates
• Includes gasket and hardware for complete installation

Pros: Budget-friendly without sacrificing billet quality; Versatile fitment with adapter for older LS engines
Cons: Adapter plates can introduce potential vacuum leaks if not installed carefully

4. Nick Williams Performance 92mm Throttle Body: Premium Build

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Nick Williams Performance throttle bodies are known for meticulous craftsmanship. In our evaluation of materials and design, the use of sealed bearings and billet linkage sets it apart from many competitors. Owner feedback praises the buttery-smooth throttle feel and consistent idle after proper calibration. The hard anodizing resists wear and corrosion, making it suitable for both street and race environments.

The main drawback is the premium price, which can be double that of some competitors. Additionally, it is primarily designed for LS3/L92 intakes; adapters for other manifolds are not included. We recommend this throttle body for purists who demand the highest quality components and are willing to invest in a part that will last through multiple engine builds.

• CNC machined from 6061 billet aluminum with a hard-anodized finish
• Sealed ball bearings for smooth operation and long life
• Billet linkage assembly resists flex under high spring pressure

Pros: Exceptional build quality and durability; Smooth, consistent throttle action
Cons: High price point limits accessibility

5. Edelbrock 38592 92mm Throttle Body: Great for LS3

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The Edelbrock 38592 is a straightforward upgrade for LS3 and L92 engines. Based on our research of owner experiences, it installs easily with no modifications and provides a noticeable improvement in throttle response. The progressive cam design helps maintain drivability, which is appreciated by those using their vehicle on the street. Flow numbers are respectable, supporting mild to moderate power levels.

However, the cast aluminum construction is not as robust as billet units, and some owners noted that the finish can oxidize over time if not kept clean. For high-horsepower builds, the flow may become a bottleneck. We recommend this throttle body for daily drivers and mild performance builds that prioritize ease of installation and reliable performance.

• Designed as a direct replacement for LS3 and L92 factory intakes
• Includes all necessary sensors and gaskets for easy installation
• Progressive throttle cam for smooth tip-in response

Pros: Simple bolt-on for LS3 owners with no adapter needed; Good throttle modulation for daily driving
Cons: Cast finish less visually appealing than billet

6. JEGS 92mm Throttle Body: Budget Pick

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JEGS offers a budget-friendly billet throttle body that appeals to cost-conscious builders. In our analysis of owner reviews, many found it to be a good value for the price, providing a noticeable improvement over stock. The billet aluminum body is a plus at this price point. However, we noted several reports of rough edges on the bore and inconsistent TPS calibration out of the box.

The main limitation is the variable quality control. Some units work flawlessly, while others require additional tuning or even replacement. We recommend this throttle body for DIY enthusiasts who are comfortable with potential adjustments and want to save money. For a worry-free installation, consider spending more on a premium brand.

• Billet aluminum construction at a low price point
• Includes TPS and IAC sensors with pigtail connectors
• Adapter plate available separately for older LS manifolds

Pros: Very affordable entry into 92mm throttle bodies; Billet construction is a step above cast
Cons: Quality control inconsistencies reported by some owners

7. GMPP (GM Performance Parts) 92mm Throttle Body: OEM Fit

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The GMPP 92mm throttle body is essentially the factory unit used on later LS3 engines. For those seeking a direct OEM replacement or a subtle upgrade, this is a safe choice. We found that owner feedback emphasizes its reliability and perfect fitment, with no need for tuning on otherwise stock engines. It is a proven component that will outlast many aftermarket units in terms of durability.

However, its flow characteristics are conservative. Enthusiasts looking for maximum airflow for high-horsepower builds will be disappointed. The cast aluminum construction is not as lightweight or visually impressive as billet. We recommend this throttle body for restorations, stock replacement, or mild street builds where reliability and simplicity are more important than peak power.

• Factory GM component with proven reliability
• Direct bolt-on for LS3 and L92 intake manifolds
• Includes GM-spec TPS and IAC sensors for seamless integration

Pros: OEM quality and reliability; No tuning required for stock or mild builds
Cons: Limited flow compared to aftermarket billet units

Frequently Asked Questions

What is the difference between a 92mm and stock throttle body?

A 92mm throttle body has a larger bore diameter than most stock LS throttle bodies (typically 75mm to 90mm). This allows more air to enter the engine, which can increase horsepower and torque, especially at higher RPMs. However, it may require a tune to maintain proper idle and drivability.

Will a 92mm throttle body fit my LS1 or LS2 engine?

Most 92mm throttle bodies are designed for LS3, L92, and LS7 intake manifolds. To fit an LS1 or LS2, you will need an adapter plate (some brands include it, others sell separately). Check your intake manifold flange shape and bolt pattern before purchasing.

Do I need a tune after installing a 92mm throttle body?

In many cases, a tune is recommended to optimize air/fuel ratios and idle settings. Some throttle bodies with progressive cams or precise TPS calibration may work without a tune on stock ECUs, but a professional tune ensures maximum performance and drivability.

Which 92mm throttle body is best for forced induction?

For forced induction, we recommend the FAST 92mm or Holley 112-587 due to their high flow capacity and durable construction. The Nick Williams unit is also excellent but comes at a higher cost. Ensure your throttle body can handle boost without leaking.

How do I clean and maintain my 92mm throttle body?

Use a throttle body cleaner and a soft brush to remove carbon deposits from the bore and blade. Avoid abrasive materials that could damage the coating. Check the gasket and seals periodically for leaks. Most billet units require minimal maintenance.

Our Verdict

After researching and comparing all seven options, our top pick is the Holley 112-587 92mm Throttle Body for its outstanding blend of performance, durability, and ease of installation on LS3/L92 intakes. If you are building a high-horsepower engine and already have a FAST intake, the FAST 92mm Throttle Body is an excellent runner-up that delivers exceptional top-end flow.