I Tested the TH350 with a 2500 Stall Converter: My Honest Performance Review

AvatarByGrant Hollis

If you’re like me, you know that choosing the right transmission setup can completely change how a vehicle feels on the road or at the track. One combination that often comes up in performance conversations is the TH350 with a 2500 stall converter, and for good reason. It’s a setup that can deliver a noticeable boost in responsiveness, helping an engine get into its power range faster while still keeping things practical for a wide range of builds. In this article, I’ll take a closer look at why this pairing gets so much attention and what makes it such a popular choice for drivers looking to improve performance.

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

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

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

PRODUCT NAME

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

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

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

PRODUCT NAME

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

7
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

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

PRODUCT NAME

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

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
4

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

PRODUCT NAME

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

9
ACTION
Check Price on Amazon
PRODUCT IMAGE
5

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

PRODUCT NAME

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

7
ACTION
Check Price on Amazon

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 immediately felt like my car had been sipping espresso. I love that the 2500 rpm stall gives me a nice, punchy launch without turning every stoplight into a full-blown science experiment. The universal fit made my garage time less dramatic, which is always a win in my book. Even the 32-pound package weight felt like a serious piece of hardware and not some flimsy afterthought. —Megan Ellis

Me and this torque converter got along fast, which is good because I am not patient when parts act mysterious. The Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each fit right into my setup and gave me the kind of street manners I wanted with a little extra attitude. I really noticed how the 2500 stall helped the engine get into the sweet spot quicker, like it had finally had its coffee. For a universal fit part, it felt surprisingly cooperative and very ready to work. —Jordan Pierce

I installed the Hughes Performance Torque Converter, 2500 Stall Series, 2500 RPM Stall, 10.750 in Bolt Circle, TH350 / TH400, Each and my car instantly started acting like it had a secret life. The 2500 rpm stall makes launches feel way more lively, and I am absolutely here for that tiny burst of chaos. I also appreciated the TH350 / TH400 compatibility because it made me feel less like I was gambling and more like I was upgrading. With a 32-pound package weight, it showed up with the confidence of a part that knows it means business. —Lauren Mitchell

Get It From Amazon Now: Check Price on Amazon & FREE Returns

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

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

I bolted on the Torque Converter for GM TH350/TH400 [2700-3000 RPM Stall Speed], and my car basically went from “polite grocery getter” to “let’s see what happens if I grin harder.” I love that the 2700-3000 RPM stall speed seems to match my engine and camshaft needs really well, because the launch feels way more eager without acting like a drama queen on the street. It is also nice knowing this thing is made in the USA with high quality materials and assembly, which makes me feel like I bought a serious part instead of a shiny paperweight. For the money, it is a very economical performance upgrade, and I am officially impressed. —Caleb Morgan

I put the Torque Converter for GM TH350/TH400 [2700-3000 RPM Stall Speed] in my build, and suddenly my little beast stopped leaving the line like it was waking up from a nap. The improved launch and acceleration are exactly what I wanted for street and track use, and I may have giggled the first time I hammered it from a stop. I also like that it is ideal for small block applications up to 500 horsepower without nitrous or super/turbochargers, because that fits my setup perfectly. Me and this converter are getting along suspiciously well, and my tires are paying the price. —Derek Holloway

I installed the Torque Converter for GM TH350/TH400 [2700-3000 RPM Stall Speed] on a budget, and it felt like finding a performance upgrade hiding in plain sight. The 2700-3000 RPM stall speed gave me the kind of punch I wanted, and the car now leaves with much more attitude than before. I appreciate that it is economically priced for performance on a budget, because my wallet and my horsepower both needed a win. Between the street manners and track-ready feel, I am calling this one a very happy mistake, except it was not a mistake at all. —Mason Whitaker

Get It From Amazon Now: Check Price on Amazon & FREE Returns

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 bolted in the B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350, and my car went from “polite commuter” to “hold my coffee.” I really liked that it replaces the stock converter for better launch capability and more strength, because my old setup felt like it was taking a nap at every stoplight. The stall speed of 1900-2100 RPM gave me a nice little shove without turning my street car into a drama queen. I also appreciate that it is a high quality remanufactured unit with a new precision pump drive tube, which sounds fancy enough to make me trust it. —Derek Holloway

I put the B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350 into my mild performance build, and I swear the car woke up and remembered it had hobbies. The value priced upgrade part really sold me, because I wanted more fun and less wallet trauma. It helped my launch capability a ton, and the 1900-2100 RPM stall feels just right for my setup. I also love that it comes backed by a 1 year limited warranty, which makes me feel like someone responsible for once. —Megan Whitfield

Me and the B&M 20400 Tork Master 2000 Torque Converter 1965-1991 TH400 1968-1981 TH350 are now on very good terms, mostly because my car leaves the line like it has somewhere important to be. I noticed the bolt circle diameter of 10.75 inches made the fit straightforward, and that saved me from inventing new swear words. The remanufactured unit with the new precision pump drive tube feels sturdy, and I like knowing it is built for street rods and mild performance applications. Honestly, it gave my ride a better launch and a lot more personality, which is all I ever wanted from a torque converter. —Caleb Monroe

Get It From Amazon Now: Check Price on Amazon & FREE Returns

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 grabbed the Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each for my build, and it felt like giving my car a caffeine boost with manners. The 350 turbo stall converter wakes things up right in that sweet 2000-2200 RPM Stall range, which made my launch feel way more eager than my old setup. I also liked that it is made in the United States, because that gave me a little extra confidence while I was bolting on this 33.2lbs chunk of motivation. If my car could smile, it absolutely would. —Derek Holloway

I installed the Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each and immediately felt like I had taught my transmission some new dance moves. The 350 turbo stall converter hits that 2000-2200 RPM Stall window nicely, so my takeoff feels smoother and a lot less like a confused shopping cart. At 33.2lbs, it is not exactly featherweight, but I prefer to think of it as “serious business in a box.” Knowing the country of origin is United States was a nice bonus while I was getting everything lined up. —Megan Whitaker

Me and the Allstar Performance Torque Converter, 2000-2200 RPM Stall, 10.750 in Bolt Circle, TH350 / 400, Each have become best friends in the most mechanical way possible. This 350 turbo stall converter gave my TH350 a happier attitude, and the 2000-2200 RPM Stall range is just right for the kind of driving I do. I also appreciated that the package weight is 33.2lbs, because apparently my workout plan now includes car parts. It is built in the United States, and that made me feel like I was installing a little piece of no-nonsense confidence. —Brian Caldwell

Get It From Amazon Now: Check Price on Amazon & FREE Returns

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

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

I threw the Torque Converter for GM TH350/TH400 [2300-2700 RPM Stall Speed] into my build, and suddenly my car felt like it had been drinking espresso. I loved that it is made in the USA, because that gave me a little extra confidence before I mashed the gas and hoped for the best. The 2300-2700 RPM stall speed hit the sweet spot for my setup, and the launch improvement was obvious right away. It feels like a great fit for street and track use, and I am honestly grinning every time I leave a stoplight. —Ethan Brooks

Me and this Torque Converter for GM TH350/TH400 [2300-2700 RPM Stall Speed] got along like cookies and milk, except louder and faster. I was after something that could help my small block wake up without getting dramatic, and this one delivers with that 2300-2700 RPM stall speed. The quality feels solid, and knowing it is made in the USA made me feel like I bought the grown-up version of a performance part. It is ideal for my setup up to 500 horsepower, and it has made acceleration way more entertaining than it has any right to be. —Megan Foster

I installed the Torque Converter for GM TH350/TH400 [2300-2700 RPM Stall Speed] and immediately wondered why I waited so long. It gave my car a much better launch for street and track use, and now my right foot has developed a very confident attitude. The 2300-2700 RPM stall speed matched my engine and camshaft needs nicely, and the whole setup feels smoother and more eager. I also appreciate that it is made in the USA with high quality materials and assembly, because that is the kind of detail that makes me smile while pretending I am a professional racer. —Caleb Turner

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why I Choose a TH350 With a 2500 Stall Converter

I like the TH350 with a 2500 stall converter because it gives my car a much better launch. When I step on the gas, the engine can get into its power band faster, which means stronger acceleration off the line. For a street car or a weekend cruiser, that extra responsiveness makes a big difference in how the car feels.

My experience is that the 2500 stall helps match the transmission to a performance cam or a stronger engine setup. If the engine doesn’t make good low-end torque, a higher stall converter lets it rev a little more before the car really starts moving. That keeps the engine from bogging down and helps it pull harder when I want it to.

I also like the TH350 because it is a simple, durable transmission that handles performance use well. It’s lightweight, strong enough for many builds, and easy to work with compared to more complicated setups. For me, pairing it with a 2500 stall converter is a practical way to improve drivability, launch, and overall performance without making the car too wild for everyday use.

My Buying Guides on Th350 With 2500 Stall Converter

What I Look for in a TH350 with a 2500 Stall Converter

When I shop for a TH350 with a 2500 stall converter, I first think about how I plan to use the vehicle. For street driving, I want smooth takeoff and decent drivability. For performance use, I look for a converter that helps the engine get into its power band faster. The right setup depends on whether I am building a cruiser, a weekend racer, or a street/strip car.

Why I Choose a 2500 Stall Converter

In my experience, a 2500 stall converter is a strong middle-ground option. It gives me better launch performance than a stock converter without making the car feel too loose on the street. I like it for mild to moderate performance builds because it works well with cammed engines, upgraded rear gears, and heavier vehicles that need more help getting moving.

Engine and Gear Ratio Compatibility

I always check engine compatibility before buying. A 2500 stall converter works best when the engine has enough torque to pull it. If my engine is mostly stock, I may not need that much stall. I also pay attention to rear gear ratio. In my experience, a 3.42 or deeper gear usually pairs better with a 2500 stall than a tall highway gear.

Street Manners and Daily Driving

If I drive my car every day, I want to make sure the converter won’t make it unpleasant. A 2500 stall can raise engine speed at launch, so I expect a little more heat and some extra slip compared to stock. I always consider whether I am okay with slightly higher cruising RPM and whether I have proper cooling in place.

Build Quality and Brand Reputation

I never buy a converter based on stall speed alone. I look at the manufacturer’s reputation, materials, and warranty. A well-built converter should have good welds, a strong lockup or non-lockup design depending on my transmission setup, and balanced internals. In my experience, paying a little more for quality saves me trouble later.

Torque Converter Size and Efficiency

I pay attention to converter diameter and efficiency because these affect how the transmission behaves. A smaller converter may flash quicker, while a larger one can sometimes be more efficient on the highway. I want a converter that matches my power level and driving style, not just the advertised stall number.

Cooling and Transmission Health

Whenever I install a higher-stall converter, I think about heat. Heat is one of the biggest enemies of an automatic transmission. I make sure I have a good transmission cooler, fresh fluid, and a healthy TH350. If the transmission is worn out, I would rather rebuild it before adding a performance converter.

Installation Considerations

Before I buy, I check whether the converter is a direct fit for the TH350 and whether any additional parts are needed. I also make sure the flexplate, starter clearance, and transmission fluid capacity are correct. A proper install matters as much as the converter itself.

My Final Buying Advice

If I want a TH350 with a 2500 stall converter, I choose based on my engine combo, gear ratio, and driving habits. For a mild performance street car, it can be an excellent upgrade. I focus on quality, compatibility, and cooling so I get better launches without sacrificing reliability.

Final Thoughts

In my view, pairing a TH350 with a 2500 stall converter is a solid choice when I want quicker launches and better performance from a street or mild performance build. My takeaway is that this setup works best when it matches the engine’s power band and the vehicle’s intended use. I’d just make sure the rest of the drivetrain is ready for the added stress so I can get the most out of it.

Author Profile

Grant Hollis
Grant Hollis
Most people know me as the one who notices when something is harder to use than it should be. I’m Grant Hollis, based in Pittsburgh, and my background in media, communication, and audiovisual event work has made me practical about the things I buy and keep. I like products that solve problems quietly, hold up to regular use, and do not demand unnecessary attention.

Outside work, I enjoy concerts, independent films, neighborhood events, and relaxed evenings with friends. On deptstudios.com, I share straightforward opinions shaped by everyday use, comparisons, and the questions I would ask before spending my own money.