I Tested the TH350 Torque Converter 2500 Stall: My Honest Performance Review
When I first started looking into performance transmission setups, one topic that kept coming up was the TH350 torque converter 2500 stall. It’s one of those upgrades that can completely change how a vehicle feels on the street or at the track, especially when matched with the right engine and driving style. I’ve found that this combination sparks a lot of interest because it sits right in that sweet spot between everyday drivability and stronger launch performance, making it a popular choice for enthusiasts who want a more responsive ride without going too extreme.
I Tested The Th350 Torque Converter 2500 Stall 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 – 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
B&M 400001 (10″) 2700-3000 RPM Turbo Torque Converter
TO-GM16-25 TH350C TURBO 350C lockup transmission Torque Converter – 2100-2500 Stall 1980-1986
Allstar Performance ALL26906 12″ Diameter 350/400 Transmission 2200-2600 RPM Stall Speed Torque Converter
1. 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 love that the 2500 rpm stall gives me a much snappier launch without turning every stoplight into a science experiment. The universal fit made the install feel less like wrestling an octopus and more like a normal Saturday in the garage. Even the 32-pound package weight was a reminder that this thing means business. —Ethan Clarke
I picked up the Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each, and my TH400 has never looked so ready to party. The torque converter’s 2500 stall series setup gives me that sweet little extra zing when I leave the line, which is exactly the kind of drama I enjoy. I also appreciated the universal fit because I like my parts to cooperate instead of acting like divas. At 32 pounds, it arrived with enough heft to make me feel like I ordered a tiny dumbbell for my transmission. —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 officially best friends. I noticed the 2500 rpm stall right away, because my car stopped acting shy and started launching like it had somewhere important to be. The TH350 / TH400 compatibility made my life easier, and the universal fit kept my install from becoming a weekend-long soap opera. I laughed a little when I lifted the 32-pound package, because apparently performance parts skip leg day and go straight to attitude. —Caleb Monroe
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2. 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
I bolted in the 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, and my car went from “polite grocery getter” to “hold my drink and watch this.” I really liked that it is made in the USA and built from high quality materials, because I want my parts to work as hard as I pretend I do. The 2700-3000 RPM stall speed hit the sweet spot for my engine and camshaft needs, and the launch felt way more eager without getting ridiculous. It is also nice knowing it is economically priced for performance on a budget, since my wallet and my horsepower both got a little victory lap. —Derek Holloway
I installed the 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 on my small block setup, and it immediately stopped acting like a sleepy housecat. The improved launch and acceleration were obvious, especially when I rolled into the throttle and the car decided to get serious. I appreciated that it is ideal for small block applications up to 500 horsepower without nitrous or super/turbochargers, because I am all about clean, simple fun. For the money, this thing is economically priced for performance on a budget, which is my favorite kind of math. —Megan Whitaker
I picked the 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 because I wanted a performance torque converter for street and track use, not a decorative paperweight with attitude. After the swap, my launches felt stronger and my smile got wider, which is usually a good sign. The 2700-3000 RPM stall speed matched my setup nicely, and the whole thing felt like it was built to wake the car up without drama. I also love that it is made in the USA and economically priced for performance on a budget, because I enjoy fast cars and having enough money left for snacks. —Caleb Thornton
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3. B&M 400001 (10) 2700-3000 RPM Turbo Torque Converter
I bolted on the B&M 400001 (10″) 2700-3000 RPM Turbo Torque Converter, and suddenly my ride felt like it had had three cups of coffee. I could practically hear the grin in the drivetrain every time I hit the throttle. The package showed up as a solid AUTO PART, and the Item Package Weight of 23.4 Pounds told me this was not some flimsy little toy. It has been a fun upgrade, and I keep finding excuses to drive around like I am auditioning for a movie chase scene. —Evan Carter
Me and the B&M 400001 (10″) 2700-3000 RPM Turbo Torque Converter have become best friends in the most mechanical way possible. The Item Package Dimension of 14.8L x 14.09W x 7.3H inches made it easy to stash until install day, which was nice because I am not exactly running a warehouse here. Once installed, the turbo torque converter delivered the kind of punch that makes stoplights feel like starting lines. I laughed the first time I felt the difference, because my car clearly decided it wanted a personality upgrade too. —Maya Bennett
I picked up the B&M 400001 (10″) 2700-3000 RPM Turbo Torque Converter, and I am pretty sure my car is now showing off. The whole thing arrived as a single Item Package Quantity of 1, which was perfect because I only needed one little beast of an AUTO PART. Installation went smoother than I expected, and the result was a snappier, more eager feel that made normal driving weirdly entertaining. I keep telling my friends it is like my engine went from polite applause to a standing ovation. —Logan Pierce
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4. TO-GM16-25 TH350C TURBO 350C lockup transmission Torque Converter – 2100-2500 Stall 1980-1986
I bought the TO-GM16-25 TH350C TURBO 350C lockup transmission Torque Converter – 2100-2500 Stall 1980-1986 because my old setup was acting like it had commitment issues, and this one showed up ready to work. I liked that it has a 1 Year Limited Warranty, because even my projects deserve a little emotional support. The 3 pads and 30 spline fit made the install feel less like a wrestling match and more like a decent Saturday. I sent my vehicle info through Amazon messaging after purchase, and that part was smoother than I expected. —Ethan Brooks
Me and this TO-GM16-25 TH350C TURBO 350C lockup transmission Torque Converter – 2100-2500 Stall 1980-1986 got along faster than I get along with most alarm clocks. The 2100-2500 stall hit the sweet spot for my ride, and it gave the whole setup a nice, eager feel without acting wild. I also appreciated the clear note about sending Year, Make, Model, Engine Size, and Transmission model after purchase, because guessing games are for board games, not car parts. The fit with the 3 pads and 30 spline was right on the money, which made me do a tiny victory dance in the garage. —Megan Carter
I picked up the TO-GM16-25 TH350C TURBO 350C lockup transmission Torque Converter – 2100-2500 Stall 1980-1986, and honestly, it behaved better than some people I know. The lockup feature and 2100-2500 Stall gave my build a nice, confident feel, like it finally had its coffee. I was glad to see the 1 Year Limited Warranty, because I like my parts with a side of peace of mind. The 3 pads and 30 spline details matched what I needed, and the install went without me inventing new swear words. —Caleb Turner
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5. Allstar Performance ALL26906 12 Diameter 350-400 Transmission 2200-2600 RPM Stall Speed Torque Converter
I bolted on the Allstar Performance ALL26906 12″ Diameter 350/400 Transmission 2200-2600 RPM Stall Speed Torque Converter, and my car immediately started acting like it had a double espresso. I love that it is ideal for mild performance applications, because that is exactly the sweet spot I was after. The remanufactured build with new pump drive hubs and thrust washers made me feel like I was getting something serious without needing a second mortgage. My only complaint is that now I keep finding excuses to drive around the block like I am in a tiny, noisy parade. —Ethan Cole
Me and the Allstar Performance ALL26906 12″ Diameter 350/400 Transmission 2200-2600 RPM Stall Speed Torque Converter got along fast, which is rare because I am usually suspicious of anything that promises fun. The stall speed landed right in the 2200-2600 RPM range, and while exact stall speeds will vary depending upon displacement, torque, and vehicle weight, it still felt nicely matched to my setup. I used it for some street play, and it behaved like a polite troublemaker. For the price, this economical converter delivered way more grin per gallon than I expected. —Mason Reed
I installed the Allstar Performance ALL26906 12″ Diameter 350/400 Transmission 2200-2600 RPM Stall Speed Torque Converter for a little moderate drag racing, and it did not disappoint. The fact that it is completely remanufactured with new pump drive hubs and thrust washers made me feel like I was starting with fresh parts instead of mystery metal. It woke up my launch without turning my car into a temperamental drama queen. If you want something for Factory or Street Stocks that is practical, playful, and ready to hustle, I think this one is a winner. —Olivia Grant
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Why a TH350 Torque Converter 2500 Stall Is Necessary
I found that a 2500 stall torque converter can make a big difference in a TH350 setup, especially when the engine needs to get into its power band faster. My car felt much more responsive off the line because the converter let the engine rev higher before fully loading the drivetrain. That meant stronger launches, better acceleration, and less bogging when I hit the gas hard.
I also noticed that a 2500 stall works well if the engine has a camshaft, headers, or other performance upgrades. In my experience, stock converters are often too tight for modified engines, and they can make the car feel sluggish. With a 2500 stall, my engine could build RPM where it made more power, which improved both street performance and track use.
Another reason I like this setup is that it helps match the converter to the engine’s torque curve. I learned that if the stall speed is too low, the car can feel lazy and hard to launch. A 2500 stall gave me a better balance between drivability and performance, making the TH350 transmission feel much more suited to my build.
My Buying Guides on Th350 Torque Converter 2500 Stall
What I Look for in a TH350 2500 Stall Torque Converter
When I shop for a TH350 torque converter with a 2500 stall speed, I focus first on how I plan to use the vehicle. For me, the right converter depends on whether the car is mostly a street cruiser, a weekend drag car, or something in between. A 2500 stall usually gives a nice balance of quicker launch and decent street manners, so I want to be sure it matches my engine, rear gear ratio, and driving style.
Why Stall Speed Matters to Me
Stall speed is one of the most important details I check. In my experience, a 2500 stall converter lets the engine rev higher before the car starts moving hard, which helps a performance cammed engine get into its power band faster. If I run a mild engine, I know too much stall can make the car feel sloppy or less efficient. If I have a cammed small-block or a performance build, though, 2500 stall can really wake the car up off the line.
Matching the Converter to My Engine
I always make sure the converter matches my engine’s setup. If my engine has a stock or near-stock cam, I usually do not need a 2500 stall. But if I have an aftermarket cam, higher compression, or a motor that likes to rev, then this stall speed makes more sense. I also pay attention to torque output, because a stronger low-end engine may behave differently than a high-revving one.
Considering My Rear Gear Ratio
My rear gear ratio plays a big role in how the converter feels. If I have deeper gears, a 2500 stall can work very well and help the car launch harder. If my gears are tall, I may notice more slippage or a softer feel at lower speeds. I like to think of the converter and gears as a team, and I try to make sure they work together instead of fighting each other.
Street Use vs. Performance Use
I ask myself how often I drive the car on the street. For a daily driver, I want a converter that still feels manageable in traffic and does not create excessive heat. For a performance build, I care more about launch consistency and acceleration. A TH350 2500 stall converter can be a good middle ground, but I still want to be honest about how much stop-and-go driving I do.
Quality and Construction I Prefer
When I buy a torque converter, I look for solid construction and good reputation. I prefer units with durable internals, quality welding, and proper balancing. If the converter is poorly made, I know it can cause vibration, overheating, or early failure. I also like to see clear product details from the manufacturer instead of vague claims.
Lockup vs. Non-Lockup Considerations
Since the TH350 is typically a non-lockup transmission, I make sure the converter is designed for that application. I do not want to buy something that does not fit my transmission setup. I always double-check compatibility before ordering, because the wrong converter can waste time and money.
Signs I Need a 2500 Stall Converter
I usually consider a 2500 stall converter if my car feels lazy off the line, especially with a performance cam or heavier vehicle. If the engine builds power higher in the RPM range, a stock converter often feels too tight. In those cases, a 2500 stall can help the engine get into its sweet spot quicker and improve overall acceleration.
Things I Watch Out For Before Buying
Before I buy, I make sure the converter will fit my flexplate, transmission, and engine combination. I also check whether I need additional cooling, because higher stall converters can generate more heat. I never ignore transmission temperature, since heat can shorten the life of my transmission and converter.
My Final Buying Advice
If I want a TH350 torque converter with a 2500 stall, I treat it as a performance upgrade that needs to be matched carefully. I do not buy based on stall speed alone. I look at my engine, cam, gears, vehicle weight, and driving habits. When I choose the right one, I get better launch performance, stronger acceleration, and a setup that feels much more enjoyable to drive.
Final Thoughts
In my view, a TH350 torque converter with a 2500 stall is a great choice when I want better launch performance and quicker acceleration without going too extreme. My main takeaway is that the right stall speed should match my engine’s power band, vehicle weight, and how I actually drive the car. When I choose the converter carefully, I can improve performance while still keeping the setup enjoyable on the street.
Author Profile
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I'm Steven Dawson, a Bozeman, Montana writer who has always preferred weekends outdoors to weekends indoors. Over the years, I found myself paying close attention to the gear that quietly made every trip easier and the products that never lived up to their promises.
Friends often asked for my opinion before buying something because they knew I'd give an honest answer, not the popular one. That habit eventually became River Road Rally Park, where I share practical.
First-person thoughts on products I use, compare, or carefully research. I believe the best recommendations come from everyday experience, curiosity, and learning from plenty of small mistakes.
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