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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...

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.

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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!

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

Made in the USA Summit Racing™ Nitrous 3,200-3,500 Stall Torque Converter SUM-700361-BC

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

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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

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

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 )

Estimated Ship Date: Today

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B&M Nitrous Holeshot 3,500-3,800 Stall Torque Converter 20485

B&M Nitrous Holeshot 3,500-3,800 Stall Torque Converter 20485

B&M Nitrous Holeshot 3,500-3,800 Stall Torque Converter 20485

Torque Converter, Nitrous Holeshot, 3,500-3,800 rpm Stall Range, 30-spline, THM350/THM400, Each

Part Number: BMM-20485

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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

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

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 )

Estimated Ship Date: Today

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B&M Nitrous Holeshot 2,300-2,500 Stall Torque Converter 20480

B&M Nitrous Holeshot 2,300-2,500 Stall Torque Converter 20480

B&M Nitrous Holeshot 2,300-2,500 Stall Torque Converter 20480

Torque Converter, Nitrous Holeshot, 2,300-2,500 rpm Stall Range, THM350/THM400, Each

Part Number: BMM-20480

4.0 out of 5 stars ( 12 )

Estimated Ship Date: Today

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B&M Nitrous Holeshot 3,400-3,800 Stall Torque Converter 20482

B&M Nitrous Holeshot 3,400-3,800 Stall Torque Converter 20482

B&M Nitrous Holeshot 3,400-3,800 Stall Torque Converter 20482

Torque Converter, Nitrous Holeshot,3.400 3,800 rpm Stall Range, Chevy, THM350/THM400, Each

Part Number: BMM-20482

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

B&M Nitrous Holeshot 2,800-3,200 Stall Torque Converter 20481

B&M Nitrous Holeshot 2,800-3,200 Stall Torque Converter 20481

B&M Nitrous Holeshot 2,800-3,200 Stall Torque Converter 20481

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

Part Number: BMM-20481

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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

Made in the USA TCI StreetFighter 3,000-3,600 Stall Torque Converter 241000

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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TCI StreetFighter 3,000-3,600 Stall Torque Converter 241001

Made in the USA TCI StreetFighter 3,000-3,600 Stall Torque Converter 241001

TCI StreetFighter 3,000-3,600 Stall Torque Converter 241001

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

Part Number: TCI-241001

3.73 out of 5 stars ( 11 )

Estimated Ship Date: Today

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TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 241002

Made in the USA TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 241002

TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 241002

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

Part Number: TCI-241002

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Boss Hog Street Bandit 2,800-3,200 Stall Torque Converter 46013

Made in the USA Boss Hog Street Bandit 2,800-3,200 Stall Torque Converter 46013

Boss Hog Street Bandit 2,800-3,200 Stall Torque Converter 46013

Torque Converter, Street Bandit, 9.6 in. Diameter, 2,800-3,200 Stall, GM, TH400, Each

Part Number: APE-46013

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Boss Hog Street Bandit 2,400-2,800 Stall Torque Converter 46022

Made in the USA Boss Hog Street Bandit 2,400-2,800 Stall Torque Converter 46022

Boss Hog Street Bandit 2,400-2,800 Stall Torque Converter 46022

Torque Converter, Street Bandit, 9.6 in. Diameter, 2,400-2,800 Stall, GM, TH400, Each

Part Number: APE-46022

Not Yet Reviewed

Estimated Ship Date: Today

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Boss Hog Street Bandit 3,200-3,500 Stall Torque Converter 46033

Made in the USA Boss Hog Street Bandit 3,200-3,500 Stall Torque Converter 46033

Boss Hog Street Bandit 3,200-3,500 Stall Torque Converter 46033

Torque Converter, Street Bandit, 9.6 in. Diameter, 3,200-3,500 Stall, GM, TH400, Each

Part Number: APE-46033

Not Yet Reviewed

Estimated Ship Date: Today

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

Made in the USA TCI Ultimate StreetFighter 3,500-3,800 Stall Torque Converter 241003

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

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

Part Number: TCI-241003

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Hays Twister Full Race 3,600-4,200 Stall Torque Converter 97-1D36F

Hays Twister Full Race 3,600-4,200 Stall Torque Converter 97-1D36F

Hays Twister Full Race 3,600-4,200 Stall Torque Converter 97-1D36F

Torque Converters, Twister Full Race, 3,600-4,200 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevrolet THM400, Buick, Chevy, Jeep, Each

Part Number: HAY-97-1D36F

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 241022

Made in the USA TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 241022

TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 241022

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

Part Number: TCI-241022

Not Yet Reviewed

Estimated Ship Date: Today

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TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 242102

Made in the USA TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 242102

TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 242102

Torque Converter, Super StreetFighter, Chevy, Buick, Oldsmobile, Pontiac, TH350/TH375/TH400, Each

Part Number: TCI-242102

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

TCI StreetFighter 3,000-3,600 Stall Torque Converter 241005

Made in the USA TCI StreetFighter 3,000-3,600 Stall Torque Converter 241005

TCI StreetFighter 3,000-3,600 Stall Torque Converter 241005

Torque Converter, StreetFighter, Chevy 1998-2005, TH350/TH400, LS1, Each

Part Number: TCI-241005

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

TCI Ultimate StreetFighter 3,500-3,800 Stall Torque Converter 241004

Made in the USA TCI Ultimate StreetFighter 3,500-3,800 Stall Torque Converter 241004

TCI Ultimate StreetFighter 3,500-3,800 Stall Torque Converter 241004

Torque Converter, Ultimate StreetFighter, 10 in., Chevy, TH350/TH400, Each

Part Number: TCI-241004

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

Hays Twister Full Race 2,400-2,800 Stall Torque Converter 97-1D24F

Hays Twister Full Race 2,400-2,800 Stall Torque Converter 97-1D24F

Hays Twister Full Race 2,400-2,800 Stall Torque Converter 97-1D24F

Torque Converters, Twister Full Race, 2,400-2,800 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevrolet THM400, Buick, Chevy, Jeep, Each

Part Number: HAY-97-1D24F

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Hays Twister Full Race 4,200-4,500 Stall Torque Converter 97-1D42F

Hays Twister Full Race 4,200-4,500 Stall Torque Converter 97-1D42F

Hays Twister Full Race 4,200-4,500 Stall Torque Converter 97-1D42F

Torque Converters, Twister Full Race, 4,200-4,500 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevrolet THM400, Buick, Chevy, Jeep, Each

Part Number: HAY-97-1D42F

Not Yet Reviewed

Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Hays Twister Full Race 2,800-3,200 Stall Torque Converter 97-1D28F

Hays Twister Full Race 2,800-3,200 Stall Torque Converter 97-1D28F

Hays Twister Full Race 2,800-3,200 Stall Torque Converter 97-1D28F

Torque Converters, Twister Full Race, 2,800-3,200 rpm Stall Speed Range, 30-spline, 9.600 in. Diameter, Chevrolet THM400, Buick, Chevy, Jeep, Each

Part Number: HAY-97-1D28F

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

TCI StreetFighter 3,000-3,600 Stall Torque Converter 242101

Made in the USA TCI StreetFighter 3,000-3,600 Stall Torque Converter 242101

TCI StreetFighter 3,000-3,600 Stall Torque Converter 242101

Torque Converter, Super StreetFighter, Chevy, Buick, Oldsmobile, Pontiac, TH350/TH375/TH400, Each

Part Number: TCI-242101

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Boss Hog Street Bandit 4,200-5,000 Stall Torque Converter 46015

Made in the USA Boss Hog Street Bandit 4,200-5,000 Stall Torque Converter 46015

Boss Hog Street Bandit 4,200-5,000 Stall Torque Converter 46015

Torque Converter, Street Bandit, 9.6 in. Diameter, 4,200-5,000 Stall, GM, TH400, Each

Part Number: APE-46015

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

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