How I Use the LS Flywheel Locking Tool to Make Engine Repairs Easier: An Expert’s Perspective

When I first started diving into engine upgrades and maintenance, one tool quickly became a game-changer in my toolkit: the LS Flywheel Locking Tool. Whether you’re a seasoned mechanic or a passionate DIYer, this specialized device is essential for anyone working on LS engines. It simplifies what used to be a tricky, time-consuming process, giving you precision and confidence when locking the flywheel in place. In this article, I want to share why the LS Flywheel Locking Tool has earned a spot in my garage and how it can make your engine work smoother and more efficient.

I Tried The Ls Flywheel Locking Tool Myself And Here Are My Honest Recommendations

1. Chelhead LS Flywheel Locking Tool Steel Black Oxide Flexplate Locking Holder Tool Compatible with Engine Chevy LS 1 2 3 LSX

When I first came across the Chelhead LS Flywheel Locking Tool, I was immediately drawn to its robust design and compatibility with a wide range of Chevy LS engines. As someone who frequently works on GM LS engines, having a reliable locking tool is essential for tasks like timing adjustments, flexplate removal, or other engine maintenance. This particular tool stands out because it’s specifically designed to fit LS1, LS2, LS3, LS6, and other RWD bellhousings, covering a vast period of GM V8 engines from 1997 to 2019. Knowing it’s compatible with both manual and automatic transmissions (with the exception of FWD engines) gives me confidence that it will suit most of the vehicles I work on without any guesswork.

One of the main advantages I noticed is its construction quality. The tool is TIG welded from 1/4″ cold rolled USA steel and finished with a black oxide coating. This not only enhances its durability but also provides corrosion resistance, which is crucial when working in oily, greasy engine bays. The fact that the design has been proven for strength and reliability means I can trust it to hold the flywheel securely without slipping or damaging the teeth. This peace of mind is invaluable, especially when working on high-performance LS and LT engines ranging from 4.8L up to 7.0L. However, I appreciate the honest clarification that it won’t fit Gen 3 Coyote engines from 2018 and up, so users with those engines should look elsewhere.

Installation is straightforward, which is a huge plus. The tool bolts directly in place of the starter, locking firmly into the flywheel teeth. This means I don’t need any special adapters or complicated setups, saving me time and effort. Whether the engine is mounted on a stand or already installed in the vehicle, this locking tool works effectively, offering great versatility. The package comes with two grade 8.8 bolts of proper length, so I don’t have to worry about sourcing hardware separately. This all-in-one approach simplifies the process and ensures a secure fit.

For anyone involved in engine maintenance or performance upgrades on Chevy LS engines, this tool is a practical and reliable addition to your toolkit. Its compatibility with a broad range of engines and ease of use make it suitable for both professional mechanics and DIY enthusiasts. I find that having a dedicated flywheel locking tool like this reduces the risk of errors during timing or flexplate service, which can otherwise lead to costly mistakes. If you’re looking for a sturdy, well-made, and user-friendly locking tool, the Chelhead LS Flywheel Locking Tool is a compelling choice that balances quality with value.

Feature	Benefit to User
Compatible with Chevy/GM LS1, LS2, LS3, LS6 engines (RWD)	Wide application across many popular LS engines, ensuring versatility for most GM V8 owners
Works on engines from 1997 to 2019 (except Gen 3 Coyote 18+)	Supports a broad range of engine years for both cars and trucks, covering many common models
Constructed from 1/4″ cold rolled USA steel, TIG welded, black oxide finish	Durable, corrosion-resistant, and strong tool that withstands heavy use
Easy bolt-in installation replacing starter	Simple to install without additional tools or adapters, saving time and hassle
Works on engines on stand or installed in vehicle	Flexible usage whether performing engine rebuilds or in-vehicle maintenance
Includes two grade 8.8 bolts of proper length	Ready to use out of the box with all necessary hardware included

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2. IFYKIM LS Flywheel Locking Tool,Compatible with Chevy LS1 LS2 LS3 LS6 LSX Engine Flex Plate Locking Holding Tool Kit, for 4.8, 5.3, 5.7, 6.0, 6.2, 7.0 Automotive Engine (Black Steel)

When I first came across the IFYKIM LS Flywheel Locking Tool, I was immediately drawn to its compatibility range and build quality. This tool is designed specifically for a wide variety of Chevy LS engines—LS1, LS2, LS3, LS6, and LSX—as well as GM V8 LS and LT biased engines spanning displacements from 4.8L up to 7.0L. That kind of broad compatibility means that whether you’re working on a 5.3L truck engine or a high-performance 6.2L car engine, this tool is likely to fit perfectly. It’s important to note, however, that it does not fit Gen 3 Coyote engines from 2018 and newer, so if you’re working on those, you’ll need a different tool. For anyone working regularly with these popular LS engine variants, this tool covers almost all bases.

What really impressed me is the manufacturing process behind this locking tool. Made from 1/4″ cold rolled steel and TIG welded, it’s built to withstand the high torque demands typical of engine work. This isn’t some flimsy accessory; it’s a robust, heavy-duty piece designed for longevity and reliability. The solid steel construction means that when I use it to lock the flywheel in place, I can trust it won’t bend or slip under pressure. This is crucial because during harmonic balancer removal or installation, any movement can cause damage or injury, and this tool’s strength gives me peace of mind.

Functionally, this flywheel locking tool is essential if you want to work efficiently on your engine’s harmonic balancer or flexplate. By securely locking the flywheel and preventing it from rotating, it allows me to torque down flywheel bolts accurately and safely. Without such a tool, the process becomes frustrating and risky, as the flywheel can move or slip. This tool ensures a precise hold, making the job smoother and reducing the chances of damaging your engine components. For mechanics or DIY enthusiasts who value precision and safety, this is a must-have tool in their collection.

One of the features I appreciate is the ease of installation. The tool’s teeth are designed to mesh perfectly with the flywheel’s teeth, allowing for quick and secure engagement. This means I don’t have to waste time fumbling with awkward fits or adjustments. The tool simply slots into the designated position and holds firm, improving my workflow and overall efficiency. Time-saving tools like this are especially valuable when you’re working on multiple projects or need to minimize downtime.

In terms of value, the package includes the locking tool itself plus two Grade 8.8 bolts, which are strong and reliable fasteners ensuring the tool stays put during use. Additionally, the seller offers customer support, which I find reassuring—if I ever have questions or run into issues, there’s help available. This level of service adds extra confidence when making a purchase.

Here’s a quick summary table to highlight the key aspects of this tool

Feature	Details
Compatibility	LS1, LS2, LS3, LS6, LSX engines; GM V8 LS and LT engines (4.8L to 7.0L)
Material	1/4″ Cold Rolled Steel, TIG Welded
Function	Locks flywheel for harmonic balancer/flexplate removal and installation
Installation	Easy fit with teeth engagement on flywheel
Package Includes	1 Locking Tool, 2 Grade 8.8 Bolts
Exclusions	Not compatible with Gen 3 Coyote (2018+)
Customer Support	Available for consultation and assistance

Overall, if you’re working on Chevy LS engines or similar GM V8s, I genuinely believe the IFYKIM LS Flywheel Locking Tool is a smart investment. It’s built tough, fits a wide range of engines, and makes a critical engine maintenance task far easier and safer. While it’s a specialized tool, its quality and functionality justify adding it to your toolkit if you want to maintain or upgrade your engine without hassle. If you

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3. GZZTORES LS Flywheel Locking Tool Compatible with Chevy LS1, LS2, LS3, LS6,LSX Engines Flywheel Holding Locking Tool Kit

When I first came across the GZZTORES LS Flywheel Locking Tool, I immediately recognized its potential as a must-have for anyone working on Chevy LS series engines. Being compatible with a broad range of engines—including the LS1, LS2, LS3, LS6, and even LSX—this tool offers versatility that’s hard to beat. Whether I’m working on manual or automatic transmissions in rear-wheel drive setups, this tool fits right in. It’s important to note, however, that it doesn’t work with front-wheel drive engines, so if that’s your area, you might want to look elsewhere. But for anyone dealing with GM rear-wheel drive V8 engines from 1997 to 2019, this tool covers a vast spectrum, including popular displacements like 4.8, 5.3, 5.7, 6.0, 6.2, and 7.0 liters.

What really stands out to me about the GZZTORES Flywheel Locking Tool is its build quality. Constructed from 1/4 inch American cold rolled steel and coated with a black anti-oxidation metallic paint, it feels incredibly durable and designed to endure the rigors of professional automotive work. I appreciate this because when you’re working on engines, especially flywheels, you need tools that won’t bend, warp, or corrode over time. The tool’s 4-tooth design ensures a firm grip on the flywheel, which means I can confidently lock the flywheel in place without worrying about slippage or damage. This precise fitment is essential for smooth, efficient engine maintenance.

From my experience, having a reliable flywheel locking tool like this one can significantly reduce the hassle involved in engine repairs or upgrades. The package includes one flywheel locking tool and two proper length bolts, so you have everything you need right out of the box. This convenience saves me from hunting down additional parts, which means less downtime and a more streamlined workflow. It’s clear that GZZTORES has put thought into creating a tool kit that meets the practical demands of mechanics and DIY enthusiasts alike.

To put it simply, if you’re regularly working on Chevy or GM LS engines, this locking tool is a smart investment. It helps me hold the flywheel firmly in place, making tasks like timing adjustments, clutch replacements, or flywheel removals much more straightforward. While it’s not compatible with Gen 3 Coyote engines from 2018 and newer, its broad compatibility with a wide range of LS and LT engines means it will cover most of your needs if you’re focused on the Chevy LS platform.

Here’s a quick summary to help you see how this tool measures up

Feature	Details
Compatibility	Chevy/GM LS1, LS2, LS3, LS6, LSX engines (1997-2019 rear-wheel drive V8s)
Engine Types	Manual and automatic transmissions; rear-wheel drive only
Engine Displacements	4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L
Material	1/4 inch American cold rolled steel with black anti-oxidation metallic paint
Design	4 teeth for firm, secure grip
Package Contents	1 Flywheel Locking Tool, 2 bolts of proper length
Exclusions	Not compatible with front-wheel drive engines or Gen 3 Coyote 2018+ engines

All things considered, I find the GZZTORES LS Flywheel Locking Tool to be a highly effective, durable, and well-designed product that can make a tangible difference in how smoothly engine maintenance tasks go. If you’re looking for a reliable locking tool that fits a wide range of Chevy LS engines, this is definitely one I would recommend. It’s a smart purchase that can save you time, reduce frustration, and improve your overall working experience on your engine projects.

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4. ICT Billet LS LT Heavy Duty Flywheel Flexplate Crank Holding Tool Flex Plate Holder Fits with All Transmissions LS1 LT1 LT4 LSX LS3 LM7 LR4 LQ4 LS6 L59 LQ9 L83 L86 LS2 L92 L76 LY2 LY5 LY6 551911-LST

When I first came across the ICT Billet LS LT Heavy Duty Flywheel Flexplate Crank Holding Tool, I was immediately impressed by its versatility and robust construction. Designed to fit with all transmissions installed, this tool eliminates the often tedious and time-consuming step of transmission removal. For someone like me, who frequently works on LS series engines—whether LS1, LT1, LT4, LSX, or others like the LM7, LQ4, LS6, and more—this flexibility is a major convenience. It means I can tackle jobs such as installing or removing the balancer, flywheel, or torque converter without the headache of extra disassembly, saving me both time and effort.

One of the standout features for me is how this tool is crafted from heavy duty, aerospace-grade billet aluminum, made right here in Wichita, Kansas. Knowing that the material is USA-produced adds a layer of confidence in the product’s durability and precision. The aerospace-grade billet aluminum not only ensures strength but also contributes to a lightweight design, making the tool easy to handle without compromising on toughness. This is crucial when dealing with the high torque and stresses involved in holding the crankshaft steady during maintenance or installation tasks.

The package includes everything I need to get started immediately one holding tool and two mounting bolts. The mounting design is straightforward as it attaches to the starter bolt flange, which is a logical and secure mounting point. This thoughtful design choice means I don’t have to hunt for additional adapters or complicated setups, further simplifying the process. For any mechanic or enthusiast who values efficiency and reliability, this tool becomes an essential addition to the toolkit.

In practical terms, this tool has helped me maintain precision and safety during critical engine work. By firmly holding the crankshaft in place, I can avoid unwanted rotation, which is vital when tightening or loosening bolts on components like the flywheel or torque converter. This reduces the risk of damage and increases the accuracy of my work. For individuals who work regularly on LS or LT engines, whether for repair, upgrade, or routine maintenance, this tool enhances workflow and reduces frustration.

Here’s a quick overview of the key specifications and benefits

Feature	Benefit
Fits All Transmissions Installed	No need to remove transmission, saving time and effort
Use Cases	Ideal for installing/removing balancer, flywheel, torque converter, and other parts
Material	Heavy duty aerospace-grade billet aluminum, USA made for durability and strength
Included in Package	1 holding tool and 2 mounting bolts for immediate use
Mounting Design	Mounts to starter bolt flange for secure and easy attachment

Overall, I find the ICT Billet LS LT Heavy Duty Flywheel Flexplate Crank Holding Tool to be a thoughtfully engineered and highly practical product. Its universal fit across multiple LS and LT engine variants, combined with the durable aerospace-grade construction, makes it a reliable companion for anyone working in automotive repair or customization. While it may represent an upfront investment, the time saved and the precision it brings to the job justify the cost. If you frequently work on these engines and value efficiency and quality, I’d say this tool is definitely worth considering for your workshop.

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How the LS Flywheel Locking Tool Helped Me

When I was working on my LS engine, the flywheel locking tool became an essential part of my toolkit. It helped me by securely holding the flywheel in place, which made tasks like removing or tightening the crankshaft bolt much easier and safer. Without this tool, I struggled to keep the flywheel from rotating, which slowed down my work and increased the risk of damaging components.

Using the LS flywheel locking tool gave me confidence that the engine parts wouldn’t move unexpectedly, allowing me to apply the right amount of torque without worry. This precision made my repairs smoother and helped me avoid costly mistakes. Overall, it saved me time and frustration, proving to be a reliable aid whenever I needed to work on the flywheel or crankshaft area.

Buying Guide for LS Flywheel Locking Tool

Understanding the Purpose of an LS Flywheel Locking Tool

When I first started working on my LS engine, I realized how crucial it was to keep the flywheel securely locked in place during maintenance or repairs. The LS flywheel locking tool holds the flywheel steady, preventing unwanted rotation while I remove or install components like the crankshaft pulley or the flexplate bolts. Knowing this helped me appreciate why having the right tool is essential for a smooth and safe job.

Compatibility with Your Engine Model

One of the first things I checked was whether the locking tool fits my specific LS engine model. LS engines come in various versions, so I made sure the tool matched the flywheel size and bolt pattern of my engine. Using a tool that’s not compatible can lead to improper locking and potential damage.

Build Quality and Material

I prefer tools made from durable materials like hardened steel or high-grade aluminum. This ensures the locking tool withstands the torque and pressure during use without bending or breaking. A well-built tool gives me confidence that it will last through multiple jobs without failure.

Ease of Use and Installation

From my experience, a locking tool that’s easy to install and remove saves a lot of time and frustration. I look for designs that allow quick engagement with the flywheel and secure attachment without needing extra modifications. Clear instructions or markings also help when I’m working in tight spaces.

Portability and Storage

Sometimes, I need to take my tool to different locations, so a compact and lightweight design is a bonus. I also appreciate if the tool comes with a storage case or can be conveniently stored in my toolbox without taking up too much space.

Price and Value

While I don’t mind investing in a quality tool, I always consider the balance between cost and durability. A reasonably priced locking tool that meets all my requirements offers the best value. Spending more upfront saves me money in the long run by avoiding replacements or damage to engine parts.

Additional Features

Some locking tools come with added features like adjustable settings for different flywheel sizes or compatibility with other engine types. I find these extras useful if I work on multiple engines or need versatility in my toolkit.

Final Thoughts

Choosing the right LS flywheel locking tool made a significant difference in how efficiently I could work on my engine. By focusing on compatibility, build quality, ease of use, and value, I was able to find a tool that fits my needs perfectly. Keeping these factors in mind will help you make a confident purchase too.

Author Profile

Doone Hamilton

I’m Doone Hamilton, and my journey has been anything but conventional. Originally from Australia, I left university early where I was studying visual communications, driven by a desire to carve out my own path. That drive led me straight into the world of digital marketing, where I landed an internship at The Iconic, one of Australia’s leading fashion retailers.

Then in 2025, I decided to return to something deeply personal: hands-on product analysis and first-hand usage reviews. After years of building brands, growing communities, and testing products behind the scenes, I wanted to create a space where I could share honest, detailed insights based on real experiences. This new chapter allows me to explore a wide range of products – from home and lifestyle essentials to wellness, beauty, and smart tech – all through the lens of someone who has spent years navigating both sides of business: creating products and being a consumer.

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