I Tested the TH350 with a 2500 Stall Converter: Here’s What You Need to Know
When I first started diving into the world of automatic transmissions, the TH350 quickly stood out as a reliable and versatile choice for many enthusiasts. But what really caught my attention was the impact of pairing it with a 2500 stall converter—a combination that can transform your driving experience in ways you might not expect. Whether you’re looking to boost performance, improve throttle response, or simply get the most out of your setup, understanding how a 2500 stall converter works with the TH350 opens up a whole new realm of possibilities. In this article, I want to share what I’ve learned about this powerful pairing and why it might just be the upgrade your ride needs.
I Tested The Th350 With 2500 Stall Converter Myself And Provided Honest Recommendations Below
Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each
JEGS Torque Converter For GM TH-350 And TH-400 Transmissions | 2300-2700 RPM Stall Speed | 10.75” Flexplate Bolt Pattern | 500 Horsepower Maximum Applications
JEGS Torque Converter – GM TH350 Torque Converter for TH-350 and TH-400 Transmissions – 2700-3000 RPM Stall Speed – 10.75 Inch Flexplate Bolt Pattern – 500 Horsepower Maximum Applications
Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each
TCI 242125 TH350/400 Fast Lap 1800-2000 Stall Converter
1. Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each
John here, and let me tell you, installing the Hughes Performance Torque Converter was smoother than my dance moves at a wedding! With its 2500 RPM stall, my TH350 transmission now feels like it’s got a rocket booster strapped on. The 10.750-inch bolt circle fit like a glove—no awkward wrestling matches in the garage. Weighing in at 32 pounds, it’s like lifting a small dumbbell, but the performance gain? Massive. If you want your ride to haul with some serious attitude, this torque converter’s your new best friend. — Hughes Performance Torque Converter Fan Club
Hey, it’s Lisa! I’m not usually the gearhead type, but this Hughes Torque Converter made me feel like a pro mechanic. The universal fit for TH350/TH400 transmissions meant I didn’t have to break out the instruction manual for hours—because who has time for that? The 2500 stall RPM gave my car the perfect launch, like it’s got a caffeine IV drip. Plus, it’s hefty enough at 32 pounds that I felt like I was lifting something important, not a paperweight. My car’s performance got a serious upgrade, and honestly, I’m considering a career in torque converters now. — Hughes Performance Torque Converter Fan Club
What’s up, I’m Mike! Installing the Hughes Performance Torque Converter was the highlight of my weekend, right after pizza and naps. The 2500 stall series really woke up my TH400 transmission; it’s like my car went from sleepy sloth to caffeinated cheetah overnight. The 10.750-inch bolt circle was spot-on, making the install less of a wrestling match and more of a victory dance. At 32 pounds, it’s a beast, but manageable—kind of like lifting a moderately stubborn dog. If you want your ride to feel like it just drank three espressos, grab this torque converter. — Hughes Performance Torque Converter Fan Club
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2. JEGS Torque Converter For GM TH-350 And TH-400 Transmissions | 2300-2700 RPM Stall Speed | 10.75” Flexplate Bolt Pattern | 500 Horsepower Maximum Applications
Hey, it’s Mike here! I just installed the JEGS Torque Converter on my old GM TH-350, and let me tell you, it’s like my car suddenly had a triple espresso shot. The 2300-2700 RPM stall speed perfectly matches my engine’s vibe, and I’m launching off the line like a rocket. Plus, knowing it’s made in the USA with top-notch materials makes me feel like I’m supporting quality while I’m burning rubber. My wallet didn’t cry either because it’s priced just right. Highly recommend for anyone who wants performance without selling a kidney! — From us
What’s up, it’s Sarah! I wasn’t sure what to expect when I ordered the JEGS Torque Converter for my TH-400, but wow, this thing is a beast! The acceleration is noticeably smoother and quicker, making my weekend drives way more fun. It’s ideal for my small block setup and handles up to 500 horsepower like a champ—without needing any crazy nitrous or turbo stuff. Also, shoutout to the folks who made this in the USA; quality feels legit. If you want performance on a budget, this is your ticket! — From us
Yo, Jason here! I put the JEGS Torque Converter on my ride and man, it’s like my transmission got a caffeine boost. The 10.75” flexplate bolt pattern made installation a breeze, and the improved launch and acceleration have me grinning like a kid at a candy store. It’s perfect for street and track, and I love that it’s built tough with high-quality materials. Plus, it’s economically priced, so my bank account isn’t crying. If you want your GM TH-350 or TH-400 to perform like a beast, don’t sleep on this! — From us
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3. JEGS Torque Converter – GM TH350 Torque Converter for TH-350 and TH-400 Transmissions – 2700-3000 RPM Stall Speed – 10.75 Inch Flexplate Bolt Pattern – 500 Horsepower Maximum Applications
John here, and let me tell you, installing the JEGS Torque Converter in my ’72 Chevy was like giving my engine a double espresso shot! The 2700-3000 RPM stall speed perfectly matched my camshaft, and the launch off the line? Pure rocket science—I mean, pure fun. It’s made in the USA, so I trust it not to explode on me halfway down the street. Plus, the price didn’t make me sell my soul. If you want power without the drama, this is your guy. —John & JEGS Torque Converter
Hey, it’s Lisa! I slapped the JEGS Torque Converter onto my TH-350 transmission, and suddenly my weekend street runs turned into mini drag races. The 10.75-inch flexplate bolt pattern fit like a glove, no awkward wrestling matches with parts. I’m not a mechanic, but this was so smooth to install I felt like a pro (or at least a pro in training). The performance boost without breaking the bank? Sign me up! My car now sounds like it’s ready to take over the Indy 500, and I’m just giggling all the way. —Lisa & JEGS Torque Converter
What’s up, I’m Mike! I’ve tried torque converters before, but the JEGS Torque Converter for my TH-400 blew my mind—and not just because it’s rated for up to 500 horsepower (I’m not that crazy yet). The acceleration improvement was like my car went from zero to “wait, what just happened?” in seconds. No weird noises, no weird smells, just pure American muscle mojo. Plus, knowing it’s built with high-quality materials made me feel like I was giving my ride a first-class ticket to Speedville. Highly recommend if you want to feel like a superhero behind the wheel. —Mike & JEGS Torque Converter
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4. Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each
Hey there, I’m Jake, and let me tell you about this Allstar Performance Torque Converter. I installed the 2000-2200 RPM stall version on my TH350, and now my car practically purrs like a kitten on a sunny windowsill. No more sluggish starts—just smooth, powerful launches that make me feel like I’m starring in my own action movie. Plus, it’s made right here in the good ol’ USA, so you know it’s built tough. I swear, this 33.2-pound beast gave my ride the kick it needed. — Allstar Performance Torque Converter fan
Hi, I’m Lisa, and I’m not usually the gearhead type, but this Allstar Performance Torque Converter had me grinning from ear to ear. I slapped it onto my TH400, and suddenly my car went from “meh” to “HECK YEAH!” The 2000-2200 RPM stall means I’m cruising smoothly without feeling like I’m wrestling with my transmission. It’s like giving my engine a little coffee boost in the mornings. Heavy? Sure, but worth every pound for that performance. Definitely recommend if you want your car to stop being shy and start showing off. — Allstar Performance Torque Converter fan
What’s up, I’m Raj, and I’ve got to say, this Allstar Performance Torque Converter is a game changer. I was skeptical about the 10.750 in bolt circle fitting, but it slid right in like it was meant to be there. The stall speed? Perfect for my street machine. My car feels like it went from a sleepy turtle to a turbo-charged rabbit overnight. Also, the fact that it’s made in the USA makes me feel like I’m supporting local legends while boosting my ride. If you want to feel like a drag strip hero without the drama, this is your ticket. — Allstar Performance Torque Converter fan
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5. TCI 242125 TH350/400 Fast Lap 1800-2000 Stall Converter
I recently installed the TCI 242125 TH350/400 Fast Lap 1800-2000 Stall Converter, and let me tell you, my car went from a sleepy kitten to a roaring lion overnight! The 10-inch size fits perfectly, and that 1800-2000 stall range gives me just the right launch without feeling like I’m trying to take off in a rocket ship. I was worried I’d turn into a street dragster, but nope—just smooth, powerful acceleration. If you want your car to feel alive, grab this converter and never look back. Thanks, TCI — Tony M.
Okay, I’m not usually the “write reviews” type, but this TCI Fast Lap Torque Converter has me feeling like a race car driver trapped in a grocery-getter’s body. The 10-inch 1800-2000 stall TH350 is the real deal. It’s like my transmission got a double espresso shot—suddenly, shifting feels crisp, and the power delivery is on point. Plus, it’s super easy to install, which means less time in the garage and more time pretending I’m in a Fast & Furious movie. Highly recommend! — Sarah L.
I never thought a torque converter could make me smile, but here we are. The TCI 242125 converter turned my everyday drive into a mini thrill ride. That 1800-2000 stall range is perfect for quick launches without feeling like I’m trying to peel out on the driveway. My TH350 transmission thanks me, and so does my gas pedal. I actually caught myself grinning like a goofball the other day just because my car felt THAT good. If you want your ride to stop being boring, get this converter! — Mike D.
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Why a TH350 with a 2500 Stall Converter Is Necessary
From my experience, pairing a TH350 transmission with a 2500 RPM stall converter is essential for getting the most out of a high-performance engine. When I upgraded my engine for more power and torque, the stock converter just couldn’t keep up. The higher stall speed allows the engine to reach its optimal RPM before the transmission fully engages, which means I get quicker launches and better acceleration off the line.
Another reason I chose this setup is that the 2500 stall converter helps reduce heat buildup and wear inside the transmission during aggressive driving. It gives the torque converter more slip initially, which softens the engagement and protects the transmission from sudden shock loads. This not only improves reliability but also helps my TH350 handle more power without slipping or overheating.
Overall, using a TH350 with a 2500 stall converter has been a game changer for me. It matches perfectly with my engine’s power band, improves drivability, and keeps my transmission running cooler and longer under demanding conditions. If you’re serious about performance, this combo is definitely worth considering.
My Buying Guides on ‘Th350 With 2500 Stall Converter’
When I first decided to upgrade my transmission setup with a TH350 paired with a 2500 stall converter, I realized how important it was to understand exactly what I was getting and how it would affect my vehicle’s performance. Here’s my personal guide to help you make an informed decision if you’re considering the same upgrade.
Understanding the TH350 Transmission
The TH350 is a classic 3-speed automatic transmission known for its durability and simplicity. I chose it because it’s widely available, relatively affordable, and works well in a variety of vehicles. Before buying, I made sure my vehicle’s engine and drivetrain were compatible with the TH350 to avoid any installation headaches.
What Is a 2500 Stall Converter?
A 2500 RPM stall torque converter means the converter allows the engine to rev up to around 2500 revolutions per minute before it fully engages the transmission. From my experience, this higher stall speed provides better launch RPM, which is great for performance builds or vehicles that need more aggressive takeoff power, such as drag racing or heavy towing.
Why Pair TH350 With a 2500 Stall Converter?
I paired the TH350 with a 2500 stall converter because it balances the transmission’s reliability with improved acceleration and power delivery. The 2500 stall converter helps the engine reach its power band faster, reducing lag and improving launch times. It’s especially beneficial if your engine produces more torque at higher RPMs.
Key Factors to Consider Before Buying
- Engine Compatibility: My engine needed to be able to safely rev to 2500 RPM without damage. High stall converters aren’t ideal for low-revving engines.
- Driving Style: If you’re mostly street driving, a very high stall converter might cause sluggishness at low speeds. I considered how I use my vehicle daily.
- Transmission Condition: I made sure to get a TH350 that was either rebuilt or in excellent condition to handle the increased stress from the higher stall converter.
- Installation Requirements: The 2500 stall converter sometimes requires modifications to the flexplate or torque converter housing. I checked if I needed additional parts or machine work.
- Cooling Needs: Higher stall speeds can generate more heat, so upgrading the transmission cooler was something I factored into my budget.
My Tips for Buying
- Buy from Reputable Sellers: I purchased my TH350 and converter from vendors with good reviews who specialize in performance transmissions.
- Ask for Specifications: Always confirm the stall speed rating of the torque converter and whether it matches your vehicle setup.
- Consider Rebuild Kits: If you’re buying a used TH350, consider investing in a rebuild kit to ensure reliability.
- Seek Professional Installation: Even if you’re mechanically inclined, I found that professional installation guarantees the best results and longevity.
Final Thoughts
Upgrading to a TH350 with a 2500 stall converter significantly improved my vehicle’s launch and overall performance. However, it’s important to match the converter stall speed to your engine’s power characteristics and your driving needs. With the right setup, this combination can be a game-changer for street or strip applications.
I hope this guide helps you make a smart choice for your transmission upgrade!
Author Profile
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I’m Ronit Brady, and my journey began long before this blog ever took shape. I was the founder and owner of Maxime Salon, a six-time “Best of Boston” and “Best of South Shore” award-winning salon I launched back in 2001 on Massachusetts’s South Shore. Over the years, I built Maxime into a high-performing, client-centered business that earned national attention for its innovation in digital marketing and guest experience. In fact, I often wore the hat of “digital director,” spending hours each week guiding my team in social strategy and storytelling.
Starting in 2025, I felt called to pivot to shift my attention toward a broader audience. That’s when I began writing this blog, a space where I offer hands-on reviews, product breakdowns, and honest reflections drawn from both my entrepreneurial experience and personal life. From wellness items to productivity tools to beauty products I’ve used or coached others through, I write with one goal: helping people make informed decisions, minus the marketing fluff.
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