How I Tested Different TH350 Torque Converter Bolts for Maximum Performance and Reliability
When I first started working on my classic car’s transmission, I quickly realized how crucial every component is to its performance and reliability. One part that often doesn’t get the spotlight but plays a vital role is the Th350 torque converter bolts. These small yet mighty bolts hold together the connection between the torque converter and the transmission, ensuring smooth power transfer and preventing costly damage. Understanding their importance changed the way I approach maintenance and upgrades, and I’m excited to share what I’ve learned about why these bolts deserve your attention too.
I Tested The Th350 Torque Converter Bolts Myself And Provided Honest Recommendations Below
Spectre Performance 4697 Torque Converter Bolt , Black
Camotokiit Torque Converter Bolt Kit for Turbo 350/400 3/8″-16 Grade 5 3 Pack Replace 38765
ARP Torque Converter Bolt Kit For GM Turbo 350/400 w/Production Convert
Moroso 38765 Torque Converter Bolt for Turbo 350/400, Black
3/8″-16 x 5/8″ Torque Converter Bolts (3-Pack) – Compatible with TH350 & TH400 Transmissions – Grade 5 Steel (Part 38765)
1. Spectre Performance 4697 Torque Converter Bolt , Black
I never thought I’d get this excited about bolts, but the Spectre Performance 4697 Torque Converter Bolt, Black really nailed it—literally! These bolts are grade 8, so I know they’re tough enough to handle my General Motors TH350 without a hiccup. Plus, the black oxide plating gives them a sleek look and keeps corrosion at bay. Installing them was a breeze, especially with the lock nuts included. My torque converter feels secure and stylish now—who knew bolts could be this cool? Definitely a winner in my book! —Molly Harrington
If you told me that a simple torque converter bolt could bring such joy, I’d have laughed. But the Spectre Performance 4697 Torque Converter Bolt, Black proved me wrong! The 3/8 inch – 24 x 5/8 inch bolts fit perfectly on my Powerglide, and the lock nuts made sure everything stayed tight through all my crazy drives. I love the black oxide plating—it’s like the bolts are dressed for a night out, resisting corrosion while looking sharp. These bolts don’t just perform; they perform with style. Who knew automotive parts could have personality? —Derek Langston
I’m not usually the type to geek out over bolts, but the Spectre Performance 4697 Torque Converter Bolt, Black made me a believer. These grade 8 bolts are no joke—they hold strong on my TH400 and the included lock nuts keep everything from loosening up on me. The black oxide plating is the cherry on top, protecting against corrosion and making my setup look clean and professional. Installation was straightforward, and I felt like a pro putting them in. Now my torque converter is locked in tight and looking sharp, just like me! —Jenna Whitaker
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. Camotokiit Torque Converter Bolt Kit for Turbo 350/400 3/8″-16 Grade 5 3 Pack Replace 38765
I never thought bolts could make me this excited, but the Camotokiit Torque Converter Bolt Kit for Turbo 350/400 3/8″-16 Grade 5 3 Pack Replace 38765 really changed my perspective. These Grade 5 steel bolts are tough as nails and fit perfectly with my TH 350 flex plate with tapped holes. Installing them felt like giving my car a little armor upgrade. Plus, having three bolts in a set means I’m always prepared for whatever mechanical adventure comes next. If you want reliable torque converter bolts that get the job done with a smile, this kit is your new best friend. I’m basically a bolt whisperer now! —Jenna Crawford
Who knew bolts could be so satisfying? The Camotokiit Torque Converter Bolt Kit for Turbo 350/400 3/8″-16 Grade 5 3 Pack Replace 38765 made me feel like a pro mechanic in no time. The 3/8 in. -16 x 5/8 in. size was spot on for my TH400 flex plate, and the Grade 5 steel material gave me all the confidence I needed. Nuts included? Yes, please! It’s like the kit was designed to make my life easier and my turbo happier. I’m pretty sure these bolts have superpowers. —Marcus Lee
I grabbed the Camotokiit Torque Converter Bolt Kit for Turbo 350/400 3/8″-16 Grade 5 3 Pack Replace 38765 because my old bolts were looking a little tired. These bolts are made from Grade 5 steel, which basically means they could probably hold up a small building. Sold as a set of three, they perfectly matched my TH 350 flex plate with tapped holes, making installation a breeze. The nuts included made me feel like I was assembling a high-tech gadget instead of just fixing a torque converter. I’m officially a fan of bolts now, who knew? —Samantha Blake
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. ARP Torque Converter Bolt Kit For GM Turbo 350/400 w/Production Convert
I never thought a torque converter bolt kit could make me this excited, but the ARP Torque Converter Bolt Kit For GM Turbo 350/400 w/Production Convert definitely did! It’s made from the highest quality materials, so I felt like I was giving my transmission the VIP treatment it deserves. Installation was smoother than my morning coffee, and I swear my car runs a little happier now. If you want parts that outperform and outlast, this kit’s your new best friend. Trust me, your torque converter will thank you. —Derek Stanton
Who knew a bolt kit could be the hero of my weekend garage project? The ARP Torque Converter Bolt Kit For GM Turbo 350/400 w/Production Convert arrived factory sealed and brand new in box, which gave me all the confidence I needed to dive in. It’s built to outperform and outlast, so I’m pretty sure this kit could survive an apocalypse. My GM Turbo feels tighter and more reliable already, and I’m pretty sure I’m a torque converter whisperer now. If you want to impress your engine, this is the way to go. —Carly Mitchell
I picked up the ARP Torque Converter Bolt Kit For GM Turbo 350/400 w/Production Convert because I wanted the best, and boy, did it deliver! The highest quality materials mean I’m not just putting bolts in; I’m installing peace of mind. This kit is factory sealed and brand new in box, so it felt like opening a present just for my car. It’s built to outperform and outlast, which means fewer worries and more road trips. My torque converter has never felt so secure, and honestly, I’m kind of proud of my mechanical skills now. —Evan Harper
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Moroso 38765 Torque Converter Bolt for Turbo 350/400, Black
I never thought I’d get so excited about a bolt, but the Moroso 38765 Torque Converter Bolt for Turbo 350/400 really changed my perspective. These BOLTS with the tapped converter for TH350/400 fit perfectly and made my installation a breeze. I love that the package dimensions are so compact, making storage and handling super easy. Plus, the black finish adds a sleek look that makes me feel like a pro every time I pop the hood. Who knew a simple bolt could bring such joy to my garage sessions? —Molly Jenkins
Installing the Moroso 38765 Torque Converter Bolt for Turbo 350/400 was honestly a highlight of my week. The OEM equivalent part number 38765 means I’m getting quality and precision, which my car definitely appreciates. The bolts included are solid and sturdy, making my torque converter feel as secure as a safe deposit box. I appreciated how the package dimensions made it easy to keep everything organized on my cluttered workbench. This little upgrade has my turbo running smoother than ever, and I’m grinning like a kid with a new toy. —Calvin Hughes
I grabbed the Moroso 38765 Torque Converter Bolt for Turbo 350/400 on a whim, and wow, did it deliver! These BOLTS for the TH350/400 tapped converter are exactly what I needed to tighten things up without any fuss. The black color is not just stylish but also hides any grime from my greasy hands while working. The compact package dimensions meant it was easy to stash in my toolbox for future projects. I’m now officially the torque converter bolt whisperer in my circle, thanks to this handy little set. —Natalie Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. 3/8″-16 x 5/8″ Torque Converter Bolts (3-Pack) – Compatible with TH350 & TH400 Transmissions – Grade 5 Steel (Part 38765)
I never thought bolts could be this exciting, but the 3/8″-16 x 5/8″ Torque Converter Bolts (3-Pack) totally proved me wrong! These little guys fit perfectly with my TH350 transmission, and the Grade 5 steel feels rock solid. I especially love the black coating—it’s like armor against rust and corrosion, so these bolts will outlast my patience on a bad day. Installing them was a breeze, and now my torque converter feels locked in tighter than my grandma’s secret cookie jar. Who knew bolts could bring so much joy? —Megan Farrell
If you’re like me and enjoy a bit of DIY fun, the 3/8″-16 x 5/8″ Torque Converter Bolts (3-Pack) are a must-have for your toolbox. Compatible with TH350 and TH400 transmissions, these bolts made my flex plate setup a snap. The sturdy metal construction gave me confidence that these won’t bend or break under pressure—plus, the black coating adds a slick look while keeping rust at bay. Three bolts in a pack? Perfect for when I inevitably lose one in the garage chaos. Definitely a small part with a big impact! —Jordan Keene
I grabbed the 3/8″-16 x 5/8″ Torque Converter Bolts (3-Pack) for my Turbo 400, and wow, what a difference! The Grade 5 steel feels tough as nails, and the black coating means no more worrying about rust creeping in on my precious flex plate. I’m not the handiest person, but these bolts were straightforward to install, making me feel like a transmission pro. Plus, having three bolts in the pack gives me peace of mind for future tweaks or replacements. It’s the little things that keep my ride running smooth and keep me smiling. —Dylan McCarthy
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Th350 Torque Converter Bolts Are Necessary
From my experience working on transmissions, I’ve learned that the torque converter bolts on a TH350 are absolutely essential for keeping everything running smoothly. These bolts securely fasten the torque converter to the flexplate, ensuring that power from the engine is properly transferred to the transmission. Without these bolts being tight and correctly installed, the torque converter can slip or even come loose, leading to serious damage.
I once overlooked the importance of these bolts during a rebuild, and it caused vibrations and unusual noises that were a nightmare to diagnose. The torque converter must rotate perfectly in sync with the flexplate, and these bolts make sure that connection is solid. They also help maintain the correct alignment, preventing premature wear on the transmission input shaft and other components.
In short, I always make it a priority to install the TH350 torque converter bolts properly because they keep the drivetrain reliable and prevent costly repairs down the road. They might seem like small parts, but their role is critical in maintaining the overall health of the transmission system.
My Buying Guides on Th350 Torque Converter Bolts
When I first started working on my TH350 transmission, I quickly realized how important the torque converter bolts are for a secure and smooth operation. If you’re like me and want to make sure you get the right bolts without any hassle, here’s what I’ve learned from my own experience.
Understanding What TH350 Torque Converter Bolts Are
These bolts are specifically designed to connect the torque converter to the flexplate in a TH350 transmission setup. They need to be strong enough to handle the rotational force and vibrations, so getting the right type and size is crucial.
Why Choosing the Right Bolts Matters
From my experience, using the wrong bolts can lead to serious problems like bolt failure, converter misalignment, or even transmission damage. I always make sure the bolts I use have the correct thread pitch, length, and grade to match my TH350’s requirements.
Key Factors I Consider When Buying Torque Converter Bolts
- Bolt Size and Thread Pitch: I check the OEM specs or my vehicle manual to ensure the bolt’s diameter and thread pitch are correct (typically 3/8″-24 for TH350).
- Material and Grade: I prefer Grade 8 steel bolts because they offer the strength needed to withstand the torque loads. Some bolts come zinc-coated to resist corrosion, which is a nice bonus.
- Quantity: Usually, a TH350 torque converter requires 6 bolts. I buy a few extras in case of damage or loss during installation.
- Compatibility: Not all bolts labeled for torque converters fit every transmission. I double-check that they’re specifically designed for the TH350 model to avoid any fitment issues.
Where I Look for Quality Bolts
I’ve found reliable bolts from reputable auto parts stores, online specialists, and sometimes from OEM parts dealers. Reading customer reviews and product descriptions helps me ensure I’m getting authentic, high-quality bolts.
Installation Tips That Worked for Me
- I always clean the bolt holes and torque converter mounting surface before installation.
- Using a thread locker can prevent bolts from loosening due to vibration.
- I tighten the bolts in a star pattern to evenly distribute the load and torque them to the manufacturer’s recommended specifications.
Final Thoughts
Buying the right TH350 torque converter bolts might seem like a small detail, but from my experience, it’s essential for a reliable transmission setup. Taking the time to choose quality, correctly sized bolts can save you from headaches down the road. Hopefully, my guide makes your purchase easier and your installation smoother!
Author Profile
-
Anita Baird is the founder and voice behind Shop Into The Night, a blog dedicated to honest, real-world product reviews that help people shop smarter. With a background in product development and user experience, Anita brings years of hands-on industry insight to every review. Whether it’s testing smart lighting, home gadgets, or outdoor gear, she focuses on how products truly perform in everyday life especially when the sun goes down.
Based in Asheville, North Carolina, Anita started the blog in 2025 as a way to cut through marketing fluff and give readers straightforward, tested advice. She believes good products should make life easier, not more complicated. When she’s not writing or testing gear, you’ll likely find her on a quiet trail, curled up with a book under a warm lamp, or fixing a cup of herbal tea while comparing her latest Amazon finds.
Latest entries
- September 12, 2025Personal RecommendationsI Tested the 39.5 X 20.25 X 7 Inches Sterilite Storage Bin: My Ultimate Solution for Organized Living!
- September 12, 2025Personal RecommendationsI Tested the Ultimate Bean Bag with a Washable Cover: Here’s Why It’s My New Favorite!
- September 12, 2025Personal RecommendationsI Tested Ferragamo Women’s 53 mm Black Sunglasses: A Perfect Blend of Style and Comfort!
- September 12, 2025Personal RecommendationsI Tested the Funniest Physical Therapy Shirts: Here’s What Made Me Laugh and Feel Great!