TH400 Torque Converters & TH400 Stall Converters

The Turbo Hydra-Matic 400 automatic transmission is the heavy-duty version of the TH350. Starting in the 1960s, TH400s were found in heavier, more powerful GM vehicles,...

The Turbo Hydra-Matic 400 automatic transmission is the heavy-duty version of the TH350. Starting in the 1960s, TH400s were found in heavier, more powerful GM vehicles, like trucks. Because of their strength, reliability, and their compatibility with small and big block Chevy engines, they became popular options for performance builds, like race cars and off-road vehicles.

A torque converter—also called a stall converter when it features higher stall speed—is a fluid coupler that transfers power from your engine’s flexplate to the transmission. It’s roughly equivalent to the clutch on a manual transmission vehicle. For more details on how they work and how to choose one for your application, check out this video on our blog, On All Cylinders.

Your stock converter is fine for everyday driving, but an aftermarket converter can change the way your TH400 transmission performs. Generally, a higher stall speed can help you launch harder, while a lower stall speed is great for towing. The heat and pressure created by high horsepower can also cause ordinary converters to “balloon” or expand, causing misalignment and damage. Most aftermarket converters are reinforced with anti-ballooning features to survive these conditions.

Top Brands

As the vital link between your engine and your TH400 automatic transmission, you need a reliable torque converter that can handle the demands of performance driving. Summit Racing Equipment only carries converters from trusted name brands like TCI Auto, Hughes, B&M, Hays, Allstar Performance, and more. They’re the parts we use on our own project vehicles!

Individual Parts

Part Groups

Results 1 - 25 of 363

Summit Racing™ 2,800-3,200 Stall Torque Converter SUM-G2698

Summit Racing™ 2,800-3,200 Stall Torque Converter SUM-G2698

Torque Converter, 30-spline Input, 10 in. Diameter, 2,800-3,200 Stall, TH350, TH400, Each

Part Number: SUM-G2698

4.23 out of 5 stars ( 79 )

Estimated Ship Date: Today

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Summit Racing™ 2,200-2,800 Stall Torque Converter SUM-G2703

Torque Converter, 10 in. Diameter, TH350/TH400, 2,200-2,800 Stall, Each

Part Number: SUM-G2703

4.38 out of 5 stars ( 32 )

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Summit Racing™ 1,700-2,100 Stall Torque Converter SUM-G2699

Torque Converter, 12 in. Diameter, Chevrolet, TH350/TH400, 1,700-2,100 Stall, Each

Part Number: SUM-G2699

4.17 out of 5 stars ( 113 )

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B&M Tork Master 2,300-2,500 Stall Torque Converter 20404

Torque Converter, Tork Master, 2,300-2,500 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20404

4.44 out of 5 stars ( 34 )

Estimated Ship Date: Today

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B&M Tork Master 1,900-2,100 Stall Torque Converter 20400

Torque Converter, Tork Master, 1,900-2,100 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20400

4.32 out of 5 stars ( 76 )

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Hughes Performance Street Master 2,500 Stall Torque Converter GM25

Torque Converter, Street Rod, 2,500 rpm Stall, Chevy, TH350, TH400, Each

Part Number: HUP-GM25

4.59 out of 5 stars ( 61 )

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Summit Racing™ Nitrous 3,200-3,500 Stall Torque Converter SUM-700361-BC

Torque Converter, 10 in. Diameter, Billet Cover, Powerglide, TH350, TH400, 3,200-3,500 Stall, Each

Part Number: SUM-700361-BC

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 4, 2025 if ordered today

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Estimated Ship Date: Jun 4, 2025 if ordered today

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TCI Ultimate StreetFighter 3,500-3,800 Stall Torque Converter 241003

5 out of 5 stars ( 2 )

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Summit Racing™ Nitrous 2,800-3,200 Stall Torque Converter SUM-700360-BC

Torque Converter, 10 in. Diameter, Billet Cover, Powerglide, TH350, TH400, 2,800-3,200 Stall, Each

Part Number: SUM-700360-BC

5.0 out of 5 stars ( 3 )

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Summit Racing™ 2,000-2,400 Stall Torque Converter SUM-G2701

Torque Converter, 10 in. Diameter, Chevy, TH350/TH400, 2,000-2,400 Stall, Each

Part Number: SUM-G2701

3.06 out of 5 stars ( 16 )

Estimated Ship Date: Today

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TCI Breakaway 2,400-2,600 Stall Torque Converter 240900

Torque Converter, Breakaway, Chevy, TH350/TH400, Each

Part Number: TCI-240900

4.29 out of 5 stars ( 24 )

Estimated Ship Date: Today

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B&M Holeshot 2,900-3,200 Stall Torque Converter 20483

Torque Converter, Holeshot, 2,900-3,200 rpm Stall Range, GM, THM350/THM400, Each

Part Number: BMM-20483

5.0 out of 5 stars ( 3 )

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FTI Performance MR Series 4,000 Stall Torque Converter MR8082

Torque Converters, MR Series, Hard Hitting, 1.703 in. Crank Pilot Diameter, 30-spline, 9.500 in. Diameter, Race Usage, TH350, TH400, Each

Part Number: FTI-MR8082

5.0 out of 5 stars ( 1 )

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FTI Performance ESR Series 2,800 Stall Torque Converter ESR3380

Torque Converter, ESR Series, 9.50 in. Diameter, 2,800 rpm Flash Stall, TH350, TH400, Each

Part Number: FTI-ESR3380

4.17 out of 5 stars ( 6 )

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TCI Saturday Night Special 1,600-2,000 Stall Torque Converter 241500-A

Torque Converter, Saturday Night Special, Chevy, TH350, TH400, 12 in. Diameter, Each

Part Number: TCI-241500-A

3.31 out of 5 stars ( 16 )

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Allstar Performance 2,200-2,600 Stall Torque Converter ALL26906

Torque Converter, 30-spline, Furnace-brazed, 10.750 in. Bolt Pattern, Chevy, TH350, TH400

Part Number: AAF-ALL26906

3.33 out of 5 stars ( 3 )

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TCI StreetFighter 3,000-3,600 Stall Torque Converter 241000

Torque Converter, StreetFighter, Chevy, TH350/TH400, Each

Part Number: TCI-241000

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Today

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B&M Holeshot 1,800-2,200 Stall Torque Converter 20416

Torque Converter, Holeshot, 1,800-2,200 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20416

4.35 out of 5 stars ( 17 )

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B&M Nitrous Holeshot 3,200-3,500 Stall Torque Converter 20484

Torque Converter, Nitrous Holeshot, 3,200-3,500 rpm Stall, GM, THM350/THM400, Each

Part Number: BMM-20484

5.0 out of 5 stars ( 1 )

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Summit Racing™ Nitrous 3,700-4,100 Stall Torque Converter SUM-700362-BC

Torque Converter, 10 in. Diameter, Billet Cover, Powerglide, TH350, TH400, 3,700-4,100 Stall, Each

Part Number: SUM-700362-BC

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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FTI Performance ESR Series 3,200 Stall Torque Converter ESR0082

Torque Converter, ESR Series, 9.50 in. Diameter, 3,200 rpm Flash Stall, TH350, TH400, Each

Part Number: FTI-ESR0082

5.0 out of 5 stars ( 10 )

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FTI Performance ESR Series 3,800-4,000 Stall Torque Converter ESR8082

Torque Converter, ESR Series, 9.50 in. Diameter, 3,800 to 4,000 rpm Flash Stall, TH350, TH400, Each

Part Number: FTI-ESR8082

4.83 out of 5 stars ( 6 )

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Hughes Performance Street Rod 2,000 Stall Torque Converter GM20

Torque Converter, Street Rod, 2,000 rpm Stall, Chevy, TH350, TH400, Each

Part Number: HUP-GM20

4.21 out of 5 stars ( 39 )

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TCI Breakaway 2,400-2,600 Stall Torque Converter 240901

Torque Converter, Breakaway, Chevy, TH350/TH400, Each

Part Number: TCI-240901

4.6 out of 5 stars ( 15 )

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FTI Performance ESR Series 3,400-3,600 Stall Torque Converter ESR6082

Torque Converter, ESR Series, 9.50 in. Diameter, 3,400 to 3,600 rpm Flash Stall, TH350, TH400, Each

Part Number: FTI-ESR6082

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Today

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B&M Tork Master 2,800-3,200 Stall Torque Converter 20402

Torque Converter, Tork Master, 2,800-3,200 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20402

4.2 out of 5 stars ( 5 )

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