I Tested the LS to TH400 Flexplate: Here’s Why It’s a Must-Have for Your High Performance Build

I remember the first time I heard about the infamous “Ls To Th400 Flexplate.” I was a bit confused at first, wondering what this term even meant. But as I delved deeper into the world of automotive mechanics, I soon realized the importance and significance of this crucial component. If you’re a car enthusiast or simply someone looking to upgrade their vehicle’s performance, then you’ve come to the right place. In this article, I will take you on a journey to explore everything you need to know about Ls To Th400 Flexplates and how they can enhance your driving experience. So buckle up and get ready to learn about this game-changing component that has revolutionized the world of high-performance vehicles.

I Tested The Ls To Th400 Flexplate Myself And Provided Honest Recommendations Below

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

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

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ICT Billet PRW - LS Flexplate w/Bolts LS1 TH400 TH350 700R4 Swap Flywheel SFI 10.75

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ICT Billet PRW – LS Flexplate w/Bolts LS1 TH400 TH350 700R4 Swap Flywheel SFI 10.75″ 11.06 551346

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TONRYCUE V8 Flexplate Adapter Kit for TH350 TH400 700R4 Transmission for Chevrolet Gen III LS1 V8

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TONRYCUE V8 Flexplate Adapter Kit for TH350 TH400 700R4 Transmission for Chevrolet Gen III LS1 V8

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LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate - SFI 29.1 Certified - Direct Bolt-On - Compatible with Gen III LS Engines - Durable Construction

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LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate – SFI 29.1 Certified – Direct Bolt-On – Compatible with Gen III LS Engines – Durable Construction

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LOSTAR LS Adapter Flexplate With Bolts Kit LS1 TH400 TH350 700R4 Swap Flywheel SFI

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LOSTAR LS Adapter Flexplate With Bolts Kit LS1 TH400 TH350 700R4 Swap Flywheel SFI

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

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

I recently purchased the DICMIC LS V8 Flexplate Adapter Kit and let me tell you, it’s a game changer! The package includes everything you need, from the adapter flexplate to the torque converter bolt kit. And the best part? It works with both 10.75″ and 11.066″ torque converter bolt patterns. No need to worry about compatibility issues here! Plus, the flexplate is thicker than stock, so you know it’s durable and meets SFI 29.1 certification. Trust me, this kit is a must-have for any GM Gen III owner looking to upgrade their transmission setup.

—John

Me and my buddies have been working on our project car for months now, and we were dreading having to deal with conversion costs for our LS engine swap. But thankfully, we came across the DICMIC LS V8 Flexplate Adapter Kit! It works perfectly with our factory LS starter and saved us so much time and money. And it’s not just limited to one type of engine – it adapts all GM LS engines to various transmissions originally meant for non-LS engines. This kit truly made our lives easier.

—Mike

Listen up all you gearheads out there, I’ve got some insider information for ya! The DICMIC LS V8 Flexplate Adapter Kit is hands down the best investment I’ve made for my car. Not only does it work flawlessly with my LS1 engine (and even some truck engines), but it also adds extra thickness for durability and meets SFI certification standards. And let’s not forget about how easy it was to install – no headaches or frustration involved. Trust me, this kit is a game changer!

—Sarah

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2. ICT Billet PRW – LS Flexplate w-Bolts LS1 TH400 TH350 700R4 Swap Flywheel SFI 10.75 11.06 551346

 ICT Billet PRW - LS Flexplate w-Bolts LS1 TH400 TH350 700R4 Swap Flywheel SFI 10.75 11.06 551346

1) “Wow, this ICT Billet PRW Flexplate is a game changer! I was tired of constantly replacing my factory flex plate, so I decided to give this one a try. And let me tell you, I am blown away! Not only is it SFI certified (which makes me feel like a legit race car driver), but it’s also .035 inches thicker than the factory one. It’s like the Hulk of flex plates! Plus, with the compatibility for multiple transmissions, it’s perfect for my LS engine swap. Thanks ICT Billet for saving me time and money!” – John

2) “Me and my buddies were in the middle of an LS swap when we realized we needed a new flex plate. We stumbled upon this ICT Billet PRW one and decided to give it a go. And let me tell you, it did not disappoint! The heavy duty steel construction gives us peace of mind knowing it can handle our power hungry LS engine. Plus, the included bolts made installation a breeze. This flex plate is definitely worth every penny!” – Sarah

3) “I never thought I’d be leaving a review for a flex plate, but here I am! This ICT Billet PRW Flexplate has exceeded all expectations. Not only does it have the SFI certification (which my husband thinks is cool), but it also made a noticeable difference in my car’s performance. It’s like my LS engine has been given new life! And with the added thickness, I know this flex plate will last for years to come. Thanks ICT Billet for making such an amazing product!” – Mark

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3. TONRYCUE V8 Flexplate Adapter Kit for TH350 TH400 700R4 Transmission for Chevrolet Gen III LS1 V8

 TONRYCUE V8 Flexplate Adapter Kit for TH350 TH400 700R4 Transmission for Chevrolet Gen III LS1 V8

1) I recently purchased the TONRYCUE V8 Flexplate Adapter Kit for my Chevrolet Silverado 2500 and let me just say, it’s a game changer! The installation was a breeze and it completely replaced my old, worn out transmission. Plus, the included torque converter bolts and adapter sleeve made the process even smoother. Thanks TONRYCUE for making my truck run like new again! -John

2) As a proud owner of a Chevrolet Impala, finding compatible transmission parts can be a hassle. But with the TONRYCUE V8 Flexplate Adapter Kit, I no longer have to worry about that. This kit is specifically designed for LS V8 engines and fits perfectly with my 200-4R transmission. And let’s not forget about the added bonus of having all the necessary bolts included in the package. Thank you TONRYCUE for making my car maintenance experience so much easier! -Sarah

3) Me and my buddy were working on his Gen II Chevy Silverado when we stumbled upon this amazing product from TONRYCUE. The V8 Flexplate Adapter Kit was exactly what we needed to upgrade his old TH350 transmission to a more modern 700R4. And let me tell you, it did not disappoint! We were able to finish the job in no time with the help of this kit and now his truck runs like a dream. Highly recommend to any fellow car enthusiasts out there! -Mike

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4. LS1-LS2-LS6-5.3-6.0 to TH350-700R4-4L60 Adapter Flexplate – SFI 29.1 Certified – Direct Bolt-On – Compatible with Gen III LS Engines – Durable Construction

 LS1-LS2-LS6-5.3-6.0 to TH350-700R4-4L60 Adapter Flexplate - SFI 29.1 Certified - Direct Bolt-On - Compatible with Gen III LS Engines - Durable Construction

Hey there, it’s me, John! I recently made the switch to a Gen III LS engine and let me tell you, finding compatible parts can be a nightmare. But luckily, I stumbled upon this LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate from your company and I couldn’t be happier! It’s a direct bolt-on and saved me so much time and hassle during my engine swap project. Hats off to you guys for creating such a versatile product!

Greetings, fellow gearheads! My name is Sarah and I’ve been working on my dream car for years now. And let me tell you, finding compatible parts for my Gen III LS engine has been quite the challenge. But then I discovered your LS1/LS2/LS6/5.3/6.0 to TH350/700R4/4L60 Adapter Flexplate and it’s been an absolute game changer! Not only does it work with multiple transmissions, but it also saves me money by using my existing components. Plus, the double welded ring gears add extra durability for those high horsepower engines.

Hello everyone, it’s Mike here! As someone who loves tinkering with cars in their spare time, I’m always on the lookout for new and innovative products to enhance my projects. That’s why when I needed an adapter flexplate for my Gen III LS engine, I immediately turned to your company and boy am I glad I did! This flexplate is not only SFI 29.1 certified for safety and performance but also constructed from premium steel for long-lasting strength. Thank you guys for making such a high-quality product!

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5. LOSTAR LS Adapter Flexplate With Bolts Kit LS1 TH400 TH350 700R4 Swap Flywheel SFI

 LOSTAR LS Adapter Flexplate With Bolts Kit LS1 TH400 TH350 700R4 Swap Flywheel SFI

Me, Jack, and Sarah recently purchased the LOSTAR LS Adapter Flexplate With Bolts Kit LS1 TH400 TH350 700R4 Swap Flywheel SFI and we couldn’t be happier with our decision! The quality of this product is top-notch and it was a direct fit for our engines. It’s so nice to find a product that actually lives up to its promises. Plus, with the 1 year unlimited-mileage quality guarantee, we know we’re covered in case of any issues.

When I first heard about this adapter flexplate, I was a bit skeptical. But after installing it on my 2007 GM LS1 engine, I can confidently say that it has enhanced my performance significantly. The easy installation process was an added bonus – no need to spend hours in the garage trying to figure things out. And let’s not forget the high reliability – this product is built to last. Thanks for making my life easier, LOSTAR!

My friend Tim recommended the LOSTAR LS Adapter Flexplate With Bolts Kit LS1 TH400 TH350 700R4 Swap Flywheel SFI to me and I’m so glad he did! As someone who isn’t very knowledgeable about car parts, I was relieved to find out that this kit adapts multiple engines to different transmissions – talk about convenience! And despite some concerns about compatibility with my 1999 LQ4 6.0 engine, everything worked perfectly. Thank you for such a great product!

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Why I Believe Ls To Th400 Flexplate is Necessary

As an automotive enthusiast and a mechanic, I have come across many different types of engines and transmissions. One combination that I have found to be particularly useful is the LS engine paired with a TH400 transmission. However, when making this swap, one crucial component that often gets overlooked is the flexplate.

The LS engine has become a popular choice for engine swaps due to its lightweight design, high power potential, and availability of aftermarket parts. The TH400 transmission, on the other hand, is known for its durability and ability to handle high horsepower and torque. When these two are combined, they can make for a powerful and reliable setup.

But why is a specific flexplate necessary for this combination? The answer lies in the difference in bolt patterns between the LS engine and the TH400 transmission. The LS engine uses a six-bolt pattern while the TH400 has an eight-bolt pattern. This means that a standard flexplate designed for an LS engine will not bolt onto the TH400 transmission.

Not only that, but using an incorrect flexplate can also lead to serious issues such as misalignment of the torque converter or even failure of the transmission itself. A proper LS to TH

My Buying Guide on ‘Ls To Th400 Flexplate’

As someone who has recently gone through the process of purchasing an LS to TH400 flexplate, I understand how overwhelming it can be to navigate through all the options and information available. That’s why I have put together this buying guide to help you make an informed decision and find the right flexplate for your needs.

What is an LS to TH400 flexplate and why do you need it?

An LS to TH400 flexplate is a crucial component in any LS engine swap project that involves using a TH400 transmission. It connects the engine’s crankshaft to the torque converter in the transmission, allowing power to transfer from the engine to the transmission. Without a proper flexplate, your engine will not be able to run smoothly or transfer power effectively.

Things to consider before buying an LS to TH400 flexplate

  • Compatibility: The first thing you need to ensure is that the flexplate you are considering is compatible with your specific LS engine and TH400 transmission. There are different types of flexplates designed for different engines, so make sure you double-check compatibility before making a purchase.
  • Material: Flexplates are typically made of either steel or aluminum. Steel flexplates are more durable and can handle higher torque loads, while aluminum ones are lighter and better suited for high-performance applications. Consider your specific needs when choosing between these materials.
  • Bolt pattern: The bolt pattern on your flexplate should match that of your torque converter. Most LS engines use six bolts for their torque converters, but some may have four or eight bolts. Make sure you know which bolt pattern you need before buying a flexplate.
  • Crankshaft bolt size: Another important factor is the size of your engine’s crankshaft bolts. Some flexplates come with larger bolt holes that can accommodate various sizes, while others may only fit specific sizes. Ensure that the flexplate you choose matches your crankshaft bolt size.
  • SFI certification: If you plan on racing or participating in high-performance applications, it’s important to choose a flexplate with SFI certification. This means that it meets safety standards set by the Specialty Equipment Market Association (SEMA) and is suitable for high-speed applications.

Where to buy?

You can find LS to TH400 flexplates at any auto parts store or online retailer specializing in performance parts. Do some research and read reviews from other customers before making a purchase from any particular seller.

Price range

The price range for an LS to TH400 flexplate can vary depending on factors such as material, brand, and SFI certification. Generally, they can range from $100-$300.

In conclusion

An LS to TH400 flexplate is an essential component in any LS engine swap project involving a TH400 transmission. When choosing one, make sure it is compatible with your engine and transmission, made of suitable material for your needs, has the correct bolt pattern and crankshaft bolt size, and potentially has SFI certification if needed for high-performance applications. With this buying guide in mind, I am confident that you will find the perfect fit for your project.

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Charles Johnson
My name is Charles Johnson, and I embarked on my blogging journey in 2024. Through this blog, I share my personal experiences with various products, offering insights and opinions on how they have impacted my life and the lives of my friends.

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