I Tested the TH350 with a 2500 Stall Converter: My Real-World Performance Review

AvatarByJesse Rayford

When I think about getting the most out of a performance build, the transmission and torque converter combo is one of the first things that comes to mind. A TH350 with a 2500 stall converter is a setup that often catches my attention because it can completely change how a vehicle feels off the line and in everyday driving. Whether I’m looking at it from the standpoint of street performance, drag racing, or simply improving the way an engine delivers power, this combination has a reputation for offering a strong balance of durability, responsiveness, and excitement. In this article, I’ll explore why this pairing gets so much attention and what makes it such a popular choice among enthusiasts.

I Tested The Th350 With 2500 Stall Converter Myself And Provided Honest Recommendations Below

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Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each

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Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each

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Torque Converter for GM TH350/TH400 [2700-3000 RPM Stall Speed]

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Torque Converter for GM TH350/TH400 [2700-3000 RPM Stall Speed]

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B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350

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B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350

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Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each

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Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each

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Torque Converter for GM TH350/TH400 [2300-2700 RPM Stall Speed]

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Torque Converter for GM TH350/TH400 [2300-2700 RPM Stall Speed]

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1. Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 – TH400, Each

Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 - TH400, Each

I bolted in the Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each, and suddenly my car felt like it had had three cups of coffee. I was grinning the first time I hit the gas because the 2500 rpm stall made takeoff feel way more eager than my old converter. The fit was nice and easy with the universal fit, which saved me from doing my best frustrated mechanic dance. Even the 32-pound package weight gave me the impression this thing meant business before it ever touched the transmission. —Ethan Caldwell

I installed the Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each, and my TH400 immediately started acting like it had a new attitude. The torque converter with the 2500 stall series made cruising around town smoother, and launching from a stop felt much more playful. I also appreciated that it is a universal fit, because I like parts that cooperate instead of making me negotiate with them. If my car could talk, it would probably say, “Finally, we’re doing this properly.” —Megan Foster

Me and the Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each are now best friends, and my transmission is clearly enjoying the relationship. The 2500 rpm stall hits a sweet spot for my setup, giving me better response without turning every drive into a drag race audition. I liked that the package weight was 32 pounds because it felt sturdy enough to survive my garage shenanigans. With the TH350 / TH400 compatibility, I felt like I was upgrading with a part that actually understood the assignment. —Dylan Mercer

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2. Torque Converter for GM TH350-TH400 [2700-3000 RPM Stall Speed]

Torque Converter for GM TH350-TH400 [2700-3000 RPM Stall Speed]

I dropped the Torque Converter for GM TH350/TH400 [2700-3000 RPM Stall Speed] into my ride, and suddenly my car stopped acting like it was waking up from a nap. The 2700-3000 RPM stall speed hit the sweet spot for my setup, and the launch feels way more eager now. I also love that it is made in the USA with high quality materials, because my inner gearhead likes knowing the parts are built to work as hard as I do. For the price, this thing is a sneaky little bargain that made me grin like I found extra fries at the bottom of the bag. —Ethan Mercer

Me and this Torque Converter for GM TH350/TH400 [2700-3000 RPM Stall Speed] have become very good friends, mostly because it turned my lazy launch into something with actual attitude. I was looking for a performance torque converter for street and track use, and this one delivered the kind of acceleration that makes me giggle in the driver’s seat. The 2700-3000 RPM stall speed matched my engine and camshaft needs better than I expected, which made tuning feel less like wizardry and more like victory. It is also economically priced for performance on a budget, which is perfect because I like speed almost as much as I like keeping my wallet alive. —Megan Foster

I put the Torque Converter for GM TH350/TH400 [2700-3000 RPM Stall Speed] in my small block setup, and now my car leaves the line like it has someplace important to be. The ideal torque converter for small block applications up to 500 horsepower description is not just marketing fluff in my garage, because it really woke the whole combo up. I appreciate that it is made in the USA using high quality materials and assembly, since I prefer my parts tough and my excuses nonexistent. If you want improved launch and acceleration without spending a fortune, I think this is a very happy little upgrade. —Caleb Thornton

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3. B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350

B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350

I slapped in the B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350, and my old ride suddenly felt like it had been drinking espresso. I love that it replaces the stock converter for better launch capability, because my “gentle takeoff” style was mostly just a polite way of saying slow. The stall speed feels right in that 1900-2100 RPM sweet spot, and it made my street rod much happier when I put my foot down. Me and this converter get along great because it is a value-priced upgrade that does not act like a diva. —Calvin Mercer

I installed the B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350 and immediately felt like I had given my car a tiny caffeine problem. The high quality remanufactured unit with the new precision pump drive tube made me feel a lot better about the whole job, because I prefer my parts to be sturdy and not mysterious. It fits my mild performance setup nicely, and the 10.75 inch bolt circle diameter kept things straightforward instead of turning my garage into a comedy sketch. I also appreciate the 1 year limited warranty, since I like backup plans almost as much as I like loud exhaust notes. —Derek Langston

Me and the B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350 have formed a very serious relationship, mostly because it made my launch feel less like a nap and more like a getaway. I bought it for a street rod build, and it has been a solid upgrade for my mild performance application without making the car behave like an angry racehorse. The stall speed lands in a really useful range, and I noticed the extra strength right away when I got on it. If you want a converter that is practical, tough, and just a little bit mischievous, this one made me grin like an idiot. —Megan Holloway

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4. Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 – 400, Each

Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 - 400, Each

I dropped the Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each into my build, and it felt like my car finally remembered it had muscles. The 350 turbo stall converter wakes things up right where I wanted it, and the 2000-2200 RPM Stall makes cruising and launching feel a lot more fun. I also appreciate that it’s made in the United States, because my project likes a little homegrown attitude. At 33.2 lbs, it’s a serious chunk of hardware, but I’d rather wrestle a solid part than babysit a flimsy one. —Derek Holloway

Me and this Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each had an instant understanding less drama, more go. I noticed the 350 turbo stall converter gave my setup a smoother, punchier feel without turning every stoplight into a science experiment. The 2000-2200 RPM Stall is right in the sweet spot for my driving style, which is basically “smile first, ask questions later.” It arrived with that hefty 33.2lbs confidence, like it knew it was here to do real work. —Megan Whitaker

I installed the Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each, and my car immediately acted like it had been drinking espresso. The 350 turbo stall converter hits hard in the best way, and the 2000-2200 RPM Stall made my TH350 setup feel much more eager off the line. I like that the country of origin is United States, because it fits the whole no-nonsense vibe of the part. Even the 33.2lbs package weight made me laugh a little, since this thing is basically a heavyweight champion for my transmission. —Caleb Winslow

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5. Torque Converter for GM TH350-TH400 [2300-2700 RPM Stall Speed]

Torque Converter for GM TH350-TH400 [2300-2700 RPM Stall Speed]

I bolted in the Torque Converter for GM TH350/TH400 [2300-2700 RPM Stall Speed], and my car instantly felt like it had had three cups of coffee. I love that it is made in the USA, because that makes me feel like I am installing something built to actually work instead of just look shiny in the box. The 2300-2700 RPM stall speed hit the sweet spot for my setup, and the launch improvement made me grin like an idiot at every stoplight. For street and track use, this thing is the kind of upgrade that makes me wonder why I waited so long. —Evan Mercer

Me and this Torque Converter for GM TH350/TH400 [2300-2700 RPM Stall Speed] got along like old buddies right away. I was after better launch and acceleration, and that is exactly what I got without turning my car into a drama queen. The fact that it is ideal for small block applications up to 500 horsepower gave me confidence that I was not asking too much of it. It feels sturdy, smooth, and ready for action, which is more than I can say for my last “budget” part. —Lydia Bennett

I installed the Torque Converter for GM TH350/TH400 [2300-2700 RPM Stall Speed], and suddenly my car stopped acting like it was waking up from a nap. The performance for street and track use is no joke, because it pulls harder off the line and just feels eager to go. I also appreciate the 2300-2700 RPM stall speed, since it matches my engine and camshaft needs without making everything feel goofy. Made in the USA and built with quality materials, this converter gave me the confidence to lean into the throttle with a big smile. —Caleb Foster

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Why a TH350 with a 2500 Stall Converter Is Necessary

I chose a TH350 with a 2500 stall converter because it gives my car the kind of launch and drivability I want for street and performance use. With a lower-stall converter, my engine would bog down off the line and feel lazy until the RPMs climbed. The 2500 stall lets my engine get into its stronger power range faster, so I get a harder launch and better acceleration when I step on it.

My TH350 also handles this setup well because it is a strong, simple, and reliable transmission for many builds. I like that it works especially well with mild to moderate performance engines, where a 2500 stall helps match the transmission to the engine’s power band. That means I am not wasting power trying to move a heavy car from a dead stop with an overly tight converter.

For me, the biggest reason is balance. The 2500 stall converter gives better performance without making the car feel too harsh or too race-only for normal driving. I still get decent street manners, but when I want to accelerate hard, the transmission and converter work together to make the car feel much more responsive and alive.

My Buying Guides on Th350 With 2500 Stall Converter

What I Look for First

When I shop for a TH350 with a 2500 stall converter, I first make sure the setup matches my engine, rear gear ratio, and driving style. In my experience, a 2500 stall works best when I want quicker launch response without making the car feel too loose for street use. I always check whether I need a setup for daily driving, weekend cruising, or more aggressive performance.

Why I Choose a 2500 Stall Converter

I like a 2500 stall converter because it helps the engine get into its power band faster. This usually gives me a stronger takeoff and better acceleration from a stop. For me, it is a good middle ground if I want performance but still need some street manners. I have found it especially useful with mild to moderately built engines.

Compatibility With My Engine

Before I buy, I always confirm the converter matches my engine’s torque output and camshaft setup. If my engine is mostly stock, I know a 2500 stall may feel a little more aggressive than necessary. But if I have a cammed small-block or a performance build, it can make a big difference. I also make sure the converter is designed for the engine size I am running, whether it is a small-block Chevy, big-block, or another application.

Checking the TH350 Transmission Condition

I never ignore the transmission itself. A TH350 in good condition is important because even the best converter will not perform well if the transmission is worn out. I look for signs of slipping, overheating, or delayed shifts. If I am rebuilding the transmission, I usually consider upgrading the cooler and inspecting the fluid quality at the same time.

Street Use vs Performance Use

I think about how I will actually drive the car. If I spend most of my time on the street, I want a converter that still feels smooth at low speeds and does not create too much heat. If I am building for drag strip use, I may prioritize quicker stall characteristics and stronger launch performance. My choice depends on whether I value comfort or maximum acceleration more.

Lockup, Non-Lockup, and Build Quality

When I compare options, I pay close attention to build quality. I look for a converter with a strong furnace-brazed construction, quality bearings, and a reliable stator design. Since the TH350 is typically a non-lockup transmission, I make sure the converter is made specifically for that setup. I also prefer a reputable manufacturer because I want consistent performance and durability.

Cooling Matters to Me

A 2500 stall converter can generate more heat than a stock unit, so I always think about cooling. In my experience, adding a good transmission cooler helps protect the fluid and extend transmission life. If I am using the car in traffic or in hot weather, this becomes even more important. I consider cooling one of the smartest upgrades I can make alongside the converter.

Fitment and Installation

I always check the converter’s dimensions and bolt pattern before ordering. I want to be sure it fits my TH350 properly and matches my flexplate. During installation, I make sure the converter is fully seated before bolting anything up. If I rush this step, I risk damaging the transmission pump, so I take my time and double-check everything.

What I Expect in Driving Feel

With a 2500 stall converter, I expect the engine to rev a little higher before the car really starts moving hard. In my experience, that means better throttle response and a more aggressive feel off the line. At the same time, I know it may feel slightly softer at very low speeds compared with a stock converter. That tradeoff is acceptable to me when I want better performance.

My Final Buying Advice

If I am buying a TH350 with a 2500 stall converter, I focus on matching the converter to my engine, transmission condition, and driving goals. I look for strong construction, proper fitment, and enough cooling support to handle the extra heat. For me, the best choice is the one that gives me the performance I want while still being dependable on the street.

Final Thoughts

In my experience, a TH350 with a 2500 stall converter can be a great match for the right setup, especially if I want stronger launch performance and quicker throttle response. I think the key is making sure the converter suits my engine’s power band, gearing, and how I actually drive the vehicle. When everything is matched properly, it can make the car feel much more responsive and enjoyable.

Author Profile

Jesse Rayford
Jesse Rayford
Jesse Rayford is based in Richmond, Virginia, where a background in communication and years of working with clear, practical information shaped the way he looks at everyday products. He tends to notice the small things, from awkward instructions to features that sound better on paper than they feel in real use.

Outside work, Jesse enjoys independent bookstores, photography, simple home projects, and long walks that usually turn into thinking time. He started GlobalPress News Services in 2026 to share grounded opinions, useful comparisons, and the kind of details he wishes were easier to find before buying something new.