Transforming My Ride: My Expert Experience with the LS to TH350 Adapter

When I first embarked on my journey into the world of automotive performance and customization, I quickly discovered the transformative power of engine swaps and transmission upgrades. One of the most exciting combinations I came across was the LS to TH350 adapter—a crucial component that bridges the gap between modern LS engines and the classic Turbo Hydra-Matic 350 transmission. This ingenious piece of engineering not only enhances the performance of my vehicle but also opens up a realm of possibilities for those looking to blend the best of both worlds: the efficiency and power of LS engines with the reliability and simplicity of the TH350. In this article, I’ll dive into the significance of the LS to TH350 adapter, exploring its role in the realm of automotive modifications and how it can elevate your driving experience to new heights. Whether you’re a seasoned gearhead or just starting your automotive adventure, understanding this adapter can pave the way for exciting new projects and unparalleled performance.

I Personally Tried The LS To TH350 Adapter And Here Are My Honest Recommendations

1. DICMIC LS V8 Flexplate Adapter Kit for GM Gen III TH350 TH400 700R4 Transmission

As an automotive enthusiast, I always look for ways to enhance my vehicle’s performance while ensuring compatibility and reliability. That’s why I find the DICMIC LS V8 Flexplate Adapter Kit to be a remarkable product for anyone looking to swap or upgrade their transmission setup. This kit is specifically designed for GM Gen III engines and makes the process of adapting to TH350, TH400, and 700R4 transmissions not only feasible but also straightforward. For those of us who appreciate the intricacies of engine modifications, this product is a game changer.

The DICMIC LS V8 Flexplate Adapter Kit includes everything necessary to facilitate a smooth transition a trans adapter flexplate, six Gen III LS flexplate bolts, an LS crank sleeve adapter, and a torque converter bolt kit. This comprehensive package means that I don’t have to hunt for additional components, saving me both time and potential frustration. When I consider the cost of individual parts, the all-in-one nature of this kit becomes even more appealing, as it offers great value for my investment.

One of the standout features of this kit is its compatibility with both 10.75″ and 11.066″ (11.1″) torque converter bolt patterns. This versatility allows me to work with a range of torque converters, making it an essential addition for anyone who values flexibility in their performance modifications. Additionally, the fact that the flexplate is .035″ thicker than stock and meets SFI 29.1 certification assures me of its durability and reliability under high-stress conditions, which is critical for high-performance applications.

What I find particularly beneficial is that this adapter kit works seamlessly with the factory LS starter. This feature is a significant advantage because it reduces conversion costs, allowing me to utilize existing components rather than having to invest in new starter systems. It’s these thoughtful inclusions that make the DICMIC LS V8 Flexplate Adapter Kit stand out in a crowded market.

Furthermore, the kit is compatible with a variety of GM LS engines, including the LS1, LS6, and LS2, as well as 4.8, 5.3, and 6.0 truck engines. This broad compatibility means that whether I am working on a classic car or a modern truck, I can rely on this kit to deliver the performance I expect. It adapts to transmissions that originally came behind non-LS engines, like small-block or big-block V8s, effectively bridging the gap between old and new technology.

if you’re looking to elevate your vehicle’s performance and ensure a reliable transmission swap, I wholeheartedly recommend the DICMIC LS V8 Flexplate Adapter Kit. With its comprehensive package, robust features, and compatibility across multiple engine types, it’s an investment that promises to enhance your vehicle’s capabilities. Whether you’re a seasoned mechanic or a DIY enthusiast, this kit simplifies the process and ensures you get the most out of your LS engine. Don’t hesitate—consider making this smart addition to your automotive toolkit today!

Feature	Details
Included Components	Trans Adapter Flexplate, LS Flexplate Bolts, LS Crank Sleeve Adapter, Torque Converter Bolt Kit
Torque Converter Compatibility	10.75″ and 11.066″ (11.1″) bolt patterns
Flexplate Thickness	.035″ thicker than stock, SFI 29.1 certified
Compatible Engines	1997-07 GM LS1/LS6 engines, 4.8/5.3/6.0 truck engines
Transmission Compatibility	TH350, TH400, 700R4, 200-4R, 4L60, Powerglide

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2. Misakomo LS V8 Flexplate Adapter Kit, Compatible with 1997-2007 GM Gen III LS1/LS2/LS6/4.8/5.3/6.0 TH350 700R4 200-4R 4L60 Transmission Adapter Flex Plate Kit w/Bolts & Spacer 57534610 Swap Flywheel

I recently came across the Misakomo LS V8 Flexplate Adapter Kit, and I must say, I’m genuinely impressed with what this product offers. As someone who enjoys working on automotive projects, particularly those involving engine swaps, I understand the significance of having reliable and compatible components. This flexplate adapter kit is specifically designed for a range of GM engines from 1997 to 2007, including the Gen III LS1, LS2, and LS6, making it a versatile choice for many enthusiasts like me.

The first feature that stands out to me is the wide compatibility of this kit. It works seamlessly with both 10.75” and 11.066” (11.1”) torque converter bolt patterns. This means that whether I’m working with an LS engine or integrating a different torque converter, I have the flexibility to ensure a perfect fit. This feature is particularly beneficial for anyone looking to achieve a smooth and efficient conversion process, as it eliminates the headache of mismatched components.

Another aspect that I find quite appealing is the cost-saving element of this adapter kit. It is designed to work with the factory LS starter, which allows me to utilize existing components instead of having to purchase new ones. This not only helps to keep the overall project budget-friendly but also simplifies the installation process. For those of us who are keen on maximizing value while minimizing expenses, this is a game-changer.

Moreover, the fitment of this trans adapter kit is impressive. It accommodates a wide range of GM LS engines and truck engines, including the L33, L59, LM4, LM7, LQ4, LQ9, and LR4, adapting them to popular transmissions like TH350, 700R-4, 200-4R, and 4L60. This broad compatibility means that many enthusiasts can leverage this kit for various builds, whether I am working on a street performance car or a classic truck restoration.

However, it’s worth noting that there are specific engines, particularly some 1999-2000 LQ4 6.0 LS engines paired with a 4L80E automatic, that may not work with this kit due to the need for a flat flexplate. This clarification is crucial for anyone considering this product, as it ensures that I am making an informed decision based on my specific engine setup.

Lastly, the packaging of the kit is comprehensive. It includes the trans adapter flex plate, Gen III LS flex plate bolts, an LS torque converter adapter sleeve, and a torque converter bolt kit. This all-in-one package provides everything I need for an effortless Gen III LS swap, saving me time and effort in sourcing individual components.

the Misakomo LS V8 Flexplate Adapter Kit is an excellent choice for anyone looking to perform an LS engine swap. Its wide compatibility, cost-saving design, and comprehensive packaging make it a standout product in the market. If you are an automotive enthusiast like me, I highly encourage you to consider this kit for your next project. It not only simplifies the installation process but also ensures reliability and performance in your build.

Feature	Description
Wide Compatibility	Works with 10.75″ and 11.066″ torque converter bolt patterns.
Cost-Saving	Utilizes existing components, reducing conversion costs.
Fitment	Compatible with various GM LS engines and common transmissions.
Package Include	Includes flex plate, bolts, adapter sleeve, and bolt kit.

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3. TEMSONE Flexplate Torque Stall Converter Spacer Flywheel Swap Crankshaft Hub Adapter Compatible with TH350 TH400 Transmission for LS and LT Series Engine

When it comes to enhancing the performance of my vehicle, I always look for reliable components that not only fit perfectly but also stand the test of time. The TEMSONE Flexplate Torque Stall Converter Spacer Flywheel Swap Crankshaft Hub Adapter is one such product that has caught my attention. This adapter is specifically designed for those who own GM LS and LT engines from 1998 to 2004 that utilize a TH350 or TH400 automatic transmission. If you’re like me, someone who values quality and performance, you’ll appreciate how this adapter bridges the gap between the flexplate and torque converter, ensuring optimal functionality.

One of the standout features of this product is its precise fitment. The compatibility with GM LS and LT series engines means that I can confidently use this adapter without worrying about potential mismatches. For anyone who’s ever dealt with the frustration of ill-fitting parts, you’ll understand the peace of mind this brings. The adapter serves as a metal connector, creating a seamless connection between the flexplate and torque converter, which is crucial for maintaining the integrity of my vehicle’s transmission system.

Installation is another area where this adapter shines. I can easily position the adapter in the center hole of the flexplate and tap it into place until it’s flush with the crankshaft. This straightforward process means that I can spend less time in the garage and more time enjoying my ride. The thought of tackling a complex installation often deters many of us, but with this product, I feel empowered to handle it myself, making it an excellent choice for both novice and experienced mechanics alike.

Quality is paramount when it comes to automotive components, and TEMSONE has not cut corners here. The adapter is constructed from high-quality hard iron, ensuring durability and a perfect fit just like the original components. This level of craftsmanship not only enhances the overall performance of my vehicle but also offers peace of mind knowing that I’m using a product designed to last. It’s reassuring to know that I’m investing in something that won’t let me down when I need it most.

Additionally, the service and support offered by TEMSONE are commendable. With a 1-year product quality support guarantee, I feel confident that any issues I might encounter will be addressed promptly. The promise of a quick response within 24 hours is a testament to their commitment to customer satisfaction. This level of service makes me more inclined to choose TEMSONE products in the future, knowing that I have support behind my purchase.

In summary, if you are in the market for a reliable torque converter adapter that guarantees a perfect fit, ease of installation, and high quality, I highly recommend the TEMSONE Flexplate Torque Stall Converter Spacer Flywheel Swap Crankshaft Hub Adapter. It’s an investment that pays off in terms of performance and peace of mind. Don’t hesitate to enhance your vehicle’s efficiency with this product; you won’t regret it!

Feature	Description
Fitment	Compatible with 1998-2004 GM LS and LT engines using TH350/TH400 automatic transmission.
Function	Metal connector for seamless connection between flexplate and torque converter.
Easy to Install	Simple installation by tapping adapter into place until flush with crankshaft.
High Quality	Made with hard iron for durability and perfect fit.
Service	1-year product quality support with prompt responses to inquiries.

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4. LS Flexplate Adapter w/bolts Kit Compatible with GM Gen lll LS1/ LS6/ LS2 Engines And 5.3/6.0 Truck Engines, TH350 700R4 200-4R 4L60 transmission adapter Kit Replace 91604000 57534610

As I delve into the LS Flexplate Adapter w/bolts Kit, I can’t help but appreciate how it stands out as an essential component for anyone looking to enhance their GM Gen III LS1, LS6, or LS2 engines, as well as 5.3/6.0 truck engines. The versatility of this product is impressive, as it is designed to seamlessly adapt to a variety of automatic transmissions, including the TH350, 700R4, and 200-4R. For automotive enthusiasts and mechanics alike, this kit offers a practical solution for connecting your engine to the transmission of your choice, making it a must-have for those who are serious about performance upgrades.

One of the standout features of this flexplate adapter is its wide compatibility. With dual GM torque converter patterns of 10.75” and 11.06”, it ensures that users can integrate it with a broad range of torque converters. This level of flexibility means that whether you’re working on a classic Powerglide setup or a more modern TH350, you can trust that this adapter will deliver a reliable connection. This aspect is particularly beneficial for those who enjoy customizing their vehicles and may want to switch between different setups without the hassle of sourcing multiple components.

Moreover, the durability of the LS Flexplate Adapter cannot be overlooked. Constructed with a gold zinc-plated surface and a solid 4mm thickness, it is built to withstand the rigors of high-performance environments. The SFI 29.1 certification adds an extra layer of assurance, indicating that this product meets stringent safety and performance standards. The double-welded ring gears further enhance its robustness, preventing potential failures during operation. For me, knowing that I’m investing in a product that prioritizes longevity gives me peace of mind, especially in a high-stakes area like automotive performance.

The package itself is quite comprehensive. It includes everything I need to get started the trans adapter flexplate, six Gen III LS flex plate bolts, a torque converter adapter sleeve, and a torque converter bolt kit. This all-in-one approach is incredibly convenient, saving me time and effort in sourcing additional parts. For anyone who appreciates a streamlined installation process, this feature is a significant plus.

However, it’s worth noting that there are some limitations to be aware of. Specifically, the adapter may not work with certain 1999-2000 LQ4 6.0 LS engines that were originally paired with a 4L80E automatic transmission due to the “tall” crank flange. It also does not accommodate 8-bolt crankshaft Gen IV LS engines. For buyers, I recommend double-checking compatibility with your specific engine model to avoid any installation hiccups.

the LS Flexplate Adapter w/bolts Kit is an excellent choice for anyone looking to enhance their GM Gen III LS engine’s performance. Its wide compatibility, durable construction, and comprehensive package make it a standout option for both professional mechanics and DIY enthusiasts. If you’re serious about upgrading your vehicle and seeking reliability in your drivetrain components, I genuinely believe this kit is worth considering. Don’t miss out on the opportunity to elevate your engine’s capabilities – it could be the game-changer you’ve been looking for!

Feature	Description
Fitment	Compatible with 1997-2007 GM Gen III LS1/LS6, 2005-2009 LS2, and 5.3/6.0 truck engines.
Wide Compatibility	Features dual GM torque converter patterns for TH350, 700R4, and more.
Durability	Gold zinc plated, 4mm thick, SFI 29.1 certified with double welded ring gears.
Package Included	Includes trans adapter flexplate, bolts, torque converter adapter sleeve, and bolt kit.
Limitations	Not compatible with certain 1999-2000 LQ4 6.0 LS engines and 8-bolt crankshaft Gen IV LS engines.

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Why an LS to TH350 Adapter is a Game Changer for My Build

When I decided to swap my old engine for a modern LS engine, I quickly realized that I needed to find a way to connect it to my TH350 transmission. That’s where the LS to TH350 adapter came into play. This adapter has been a game changer for my project, allowing me to combine the best of both worlds: the performance and efficiency of an LS engine with the reliability of a TH350 transmission.

One of the biggest benefits I’ve experienced is the straightforward installation process. The adapter is designed to fit seamlessly, which saved me a lot of time and hassle. I didn’t have to worry about extensive modifications or custom parts; I could focus on getting my engine running smoothly. The peace of mind that comes from knowing I have a sturdy connection between my LS engine and TH350 transmission is invaluable.

Moreover, the performance gains have been impressive. The LS engine delivers more horsepower and torque compared to my previous setup, and the TH350 transmission handles that power effectively. This combination has resulted in a noticeable improvement in acceleration and overall driving experience. With the LS to TH350 adapter, I’ve effectively enhanced my vehicle’s performance without compromising on reliability, making my driving experience

Buying Guide for LS to TH350 Adapter

Understanding the Need for an Adapter

When I decided to swap an LS engine into my classic car, I quickly realized that I needed an adapter to mate the engine with the TH350 transmission. This adapter is crucial for achieving a reliable and functional connection between the two components. Without it, I would face significant compatibility issues.

Types of LS to TH350 Adapters

There are various types of LS to TH350 adapters available on the market. I found that some are designed for specific applications, while others offer a universal fit. It’s essential to identify which type suits my project best, as this can impact installation and performance.

Material and Build Quality

The material of the adapter plays a significant role in its durability and performance. I’ve learned that aluminum adapters are lightweight and resist corrosion, while steel options might offer more strength. I always consider the build quality to ensure it can withstand the stresses of my engine’s power.

Installation Process

Before purchasing an adapter, I recommend researching the installation process. I found that some adapters come with comprehensive instructions, making the installation straightforward. However, others may require additional modifications to my vehicle. Knowing what to expect helps me prepare for any challenges.

Compatibility with Other Components

Ensuring compatibility with other components is crucial for a successful swap. I made sure to check that the adapter works seamlessly with my existing transmission, driveshaft, and any other modifications I had planned. This step prevents future headaches during the build.

Cost Considerations

Pricing for LS to TH350 adapters can vary widely. I noticed that while some options are budget-friendly, others might be more expensive but offer better durability or features. I always weigh the cost against the potential benefits, considering my long-term goals for the vehicle.

Customer Reviews and Feedback

Before making my final decision, I found it helpful to read customer reviews and feedback. Hearing about other people’s experiences with specific adapters gave me valuable insights into their performance and reliability. I always take the time to gather this information.

Warranty and Support

Finally, I always check for warranty options and customer support when purchasing an adapter. Knowing that I have recourse in case of defects or issues adds peace of mind to my buying decision. I appreciate manufacturers that stand behind their products.

purchasing an LS to TH350 adapter requires careful consideration of various factors. By following these guidelines, I can ensure that I select the right adapter for my project, making the engine swap a successful and enjoyable experience.

Author Profile

Joshua Carney

Hi there, I'm Joshua Carney, a chef deeply invested in the culinary arts. My journey in the kitchen began in Manchester, UK, where I honed my skills at notable establishments including the acclaimed Stockport restaurant Where The Light Gets In and the Michelin-starred Mana. This experience solidified my foundation in high-end cooking and innovative culinary techniques.

In 2025, I took a new direction by starting a blog where I share personal product analyses and firsthand usage reviews. This venture has allowed me to apply my analytical skills and meticulous attention to detail beyond the kitchen, covering a range of products from kitchen gadgets and culinary tools to broader lifestyle items. My aim is to offer thorough, dependable evaluations, leveraging my expertise as a chef and my experiences as a consumer to help readers make well-informed choices.

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