TCI - GM Turbo Hydramatic 400

TCI website for transmissions, torque converters, and more

Ford Transmission and Component Applications

      C4 / C6
      AOD / AODE / 4R70W
      E4OD / 4R100

GM Transmission and Component Applications

      Powerglide
      Turbo Hydramatic 350
      Turbo Hydramatic 400
      4L80E
      4L60E / 700R4
      2004R / 200C

Circle Track Transmissions and Components

      Converters
      Transmissions
      Front Pump Drives
      Components

Drag Race Torque Converters and Transmissions

      Race Converters
      Race Transmissions
      Roll Stop®

      Diesel Products
      Truck Converters
      Maximizer™ Transmissions
      Transmission Kits
      Conversion Kits
      Transmission Coolers

Converter Applications

      Sizzler®
      StreetFighter®
      Super StreetFighter™

      Truck, RV, and Towing
      Rodders and Musclecars
      StreetFighter®
      GM LS-series

      Transmission Control Unit
      T-Com™ Software
      T-Com™ WP Software

      Bushing Kits
      Thrust Washer Kits
      Sealing Ring Kits

      Gerotor Pump
      Filler Tubes and Mounts
      Input Shafts
      Aluminum Drums
      Low Gear Planetary
      Low Drag Components
      Trans. Flex Bands
      Trans. Clutch Plates
      Trans. Pans & Accessories
      Transmission Fluid
      Speedometer Gears
      Vacuum Modulators

      Thunder Stick™ Shifter
      Outlaw™ Shifter
      StreetFighter® Shifter
      Paddle Shifter
      Street Rod Shifter
      Circle Track Shifter
      Accessories & Switches
      Shifter Cables
      Pan and Lever Kits
      Automatic Shifter Kits

The Rattler®
Elastomer Balancers

      Adapters & Mid-mounts
      Reference Materials
      Transmission Tools

GM Turbo Hydramatic 400

Torque Converters Transmission Service Manual Valve Bodies Trans. Shift Kits and Rebuild Kits Flywheels and Flexplates Aluminum Forward and Direct Drums Front Pumps Low Gear Planetaries 34 Element Sprag and Assemblies Forged Steel Clutch Hub Hardened Input And Main Shafts High Performance Clutches and Bands Deluxe Transmission Pans Additional TH 400 Accessories

If you would like a specific recommendation from a TCI® product specialist based on your vehicle specs, click here.

TCI®-equipped GeeTO TIGER!

The Turbo Hydramatic 400, or Turbo 400, as it is more commonly known among racers and performance enthusiasts, made its debut in 1964 as the standard equipment transmission in big block-powered Cadillacs and other full size GM vehicles.

Almost from the moment it put in an appearance on the street, the Turbo 400 attained near-legendary status as one of the strongest automatic transmissions ever made. In addition to becoming the transmission of choice for serious drag racers, pulling trucks and other mega-horsepower big block enthusiasts, the Turbo 400 automatic found a home as standard equipment in some of the most powerful and exotic vehicles ever produced –from V12 Jaguars and Ferraris to Full Size Jeeps and military vehicles. Today, the THM 400 transmission is only installed as original equipment in certain military vehicles, but it remains a favorite among horsepower junkies everywhere in need of a brutally strong 3-speed automatic. Although Turbo 400s are already stout in stock form, a TCI® prepped Super StreetFighter™ or Competition Turbo 400 can handle over 600 normally aspirated horsepower.

Far from just being an industry-leading manufacturer of “ready-to-run” automatic transmissions and torque converters, TCI® also carries all of those hard to find transmission swap components that you’ve been looking for –mid mount engine plates, adapter plates, kickdown linkage brackets, shifter and TV cables, speedometer gears, shifters, and much, much more. All TCI® transmissions, torque converters, and valve bodies are triple-tested in our state-of-the-art manufacturing and research facility in order to ensure reliable performance before they ever see the inside of one of our shipping cartons, and our internal components are guaranteed to be the very best that money can buy. So check out TCI® for all of your Turbo 400 needs –that high powered big block under the hood of your street machine will thank you!

Transmissions

Triple Tested Quality

We go the extra mile to ensure your transmission is superior in both form and fun

ction. Beginning with a careful inspection of the transmission case and components that will be used, we replace stock parts with high performance bands and components where applicable. We increase fluid flow, lubrication system and thrust capacity. Problematic hard parts are replaced with stronger components, many of which we fabricate ourselves at our in-house machining centers. Valve bodies are completely remanufactured and 100% tested prior to installation. Finally, each and every TCI® transmission must pass both a static hydraulic pressure test during assembly and a final dyno test prior to shipping. That's Triple Tested so you can be confident you're getting a transmission that's ready to rock.

For details regarding the different types of TCI® transmissions, click here.

Applications	Engine Size	Sizzler®	StreetFighter®	Super StreetFighter™
Chevrolet, TH400, non lock-up, with 4" tailshaft	All Chevrolet V8	211038	211000 211010 ¹211015 ²	211005
Chevrolet, TH400, non lock-up, with 9" tailshaft, large yoke	All Chevrolet V8		211090	211095
Buick, Oldsmobile, Pontiac TH400, non lock-up, with 4" tailshaft, large yoke	All B.O.P V8		211300	211305
Buick, Oldsmobile, Pontiac TH400, non lock-up, with 9" tailshaft	All B.O.P V8		211390
Buick, Oldsmobile, Pontiac TH400, non lock-up, with 12" tailshaft	All B.O.P V8		211312

1 With special low gear planetary installed ( 2.75 low, 1.57 2nd)
2 Extra heavy-duty version with Red Eagle clutches & Kolene treated steels

Torque Converters

Triple Tested Quality

TCI® strives to produce the best torque converters in the industry. Part of the process involves ensuring that each unit is built to spec. Regardless of what category or price level it may fall into, every TCI® torque converter is Triple Tested during assembly.

Once all the prep work on the component parts has been completed, the impeller is welded to the front cover. Immediately following this process, a pair of dial indicators are employed on a rotating table to verify that the impeller body and pump drive hub remain true.

Each unit is then pressurized and subjected to a leak test to confirm the integrity of all the weld seams. Lastly, each unit is computer balanced to reduce annoying and potentially damaging drivetrain vibrations that would occur from an unbalanced torque converter. That's Triple Tested so you can be confident you're getting a torque converter that's ready to roll.

Torque Converter Application	Sizzler	Saturday Night Special	Breakaway 11"	StreetFighter® 10"	Super StreetFighter™	Ultimate StreetFighter™
1965-84 TH400, 425, 425, 375 with wide bolt pattern (except variable pitch)		241501	241400 ^1,2	242000 242101 ²	242002 ²242022	241003 ² 241004 ⁴
1965-81 TH350, 375 with small bolt pattern (except lock-up)	241538	241500 241502 ³	241300 241100	242100 242101²	242102 ²242122
1965-91 TH350,400 with small bolt pattern			241101 ²
1965-91 TH350,400 with wide bolt pattern			241200
1965-91 TH350,400 with dual bolt pattern (168-tooth flywheel)			240900 240901²	241000 241001 ²	241002 ² 241022

1 Special high stall unit, great for light vehicles
2 With heavy-duty front anti-ballooning plate for nitrous applications
3 For Buick, Pontiac, Oldsmobile with small bolt circle and mounting lugs
4 Low stall configuration

Turbo Hydramatic 400 Valve Bodies
The transmission valve body is the brain of the transmission. Often it is called the control valve. Valve bodies, like automatic transmissions themselves, have been changed and updated through the years. We select and use only the valve bodies that will provide you with the best performance and service. All TCI® valve bodies are 100% quality checked for proper function and, where applicable, proper operating pressures on a dedicated valve body test machine.

We offer three types of modified valve bodies for your Turbo 400:

StreetFighter® Series - Manual/Automatic
Our manual/automatic valve body is designed for the street and strip performance car owner. It is the same valve body used in our StreetFighter® transmission series.

Full Manual Series
Our competition valve body for maximum performance and quick elapsed times in a racing application. By controlling the valve body only through manual means we can produce quicker shift timing and are able to run higher line pressures than possible with an automatic shift transmission. Higher line pressure makes it harder for clutches to slip under high loads. Remember, with a full manual you will have to make every shift, for these units do not shift on their own. A great choice for bracket cars, monster trucks, and virtually any off-road competition vehicle where a Trans-Brake is either not legal or not desired.

Trans-Brake Series
Our Trans-Brake Series allows you to achieve maximum torque converter stall and provides for quicker and more consistent reaction times and 60 foot times. This is due to the Trans-Brake action which prevents an engine's torque load from being transmitted through the drive train prior to the launch. The Trans-Brake acts in much the same manner as a manual clutch. Once the Trans-Brake is engaged, the vehicle can neither roll forward nor backward and as you press on the accelerator the engine can rpm as high as the torque converter stall. Once the Trans-Brake is released, the power is transmitted immediately to the rear tires in much the same manner as a manual clutch but with the parts saving advantage of the torque converter's shock absorbing action.

Application StreetFighter® Series Full Manual Series Trans-Brake Series

GM TH400, 1965 & later 222400
221100 ¹ 221500 ¹

1 Reverse shift pattern

TCI® Full Manual Valve Body With Engine Braking For Turbo 400

Making the right shift at the right time is critical to getting the most performance from your transmission. The new TCI® TH400 Full Manual Shift Valve Body with Low Gear Engine Braking is the best way to deliver quick shift response times and clean neutral shifting. Best of all, the full engine braking in low gear is perfect for rock crawling and 4x4 applications where utilizing the engine’s compression drag to help traverse the most extreme terrains is a useful feature.

The TCI® TH400 Full Manual Valve Body with Low Gear Engine Braking is the perfect set-up not only for heavy off road usage, but is great for hot street/strip cars where a forward shift pattern valve body ensures reliable transmission gear selection. As with all TCI® valve bodies, installation is a simple bolt-in procedure for any GM TH400 transmission with all necessary parts included and performance is guaranteed due to the rigorous TCI® quality control standards.

Application	Full Manual Valve Body With Engine Braking
GM TH400, 1965 & later	221200

Replacement Trans Brake Solenoid For Turbo 400
TCI®’s replacement trans brake solenoid features a precision-ground steel shaft with bronze bushing, a shaft-pinned nut for secure placement and unique lip seal to prevent fluid leakage while minimizing mechanical drag. The conical-face design handles higher forces than standard flat-faced solenoids with its 0.250” stroke. The high-efficiency, precision wound coil maximizes the force delivered by the solenoid, and the two-wire set-up ensures a good quality ground. Fits TCI® Trans Brake Valve Body #321500.

Description	Part No.
Replacement solenoid for TH400 trans-brake valve body #221500	221300

Trans-Brake Release Valves
Precision-manufactured direct replacement for TCI® trans brake valve bodies.

Description	Part No.
Replacement release valve & spring for #221500	221400
Composite Metal Matrix release valve for #221500	221409
Pressure Regulator Spring, high pressure spring for TH400 full manual and Trans-Brake applications	224300

Heavy-Duty Turbo 400 Flywheels and Flexplates
TCI® flywheels are .035" thicker than stock and the starter ring is welded to both sides of the flywheel for additional strength. Constructed from a high tensile strength material these flywheels resist elongation and cracking. All 168 tooth flywheels are sized for stock 3/8" mounting bolts and can be easily drilled for 7/16" diameter high performance torque converter applications. SFI 29.1 approved.

Engine Make	SFI 29.1 Approved	Trans Type	Engine Size	Balance	Remarks	Part No.
Chevy	Yes	GM	All	Internal	dual bolt pattern 168 tooth	399273
Chevy	Yes	GM	400	External	dual bolt pattern 168 tooth	399373
Chevy	Yes	GM	454	External	dual bolt pattern 168 tooth	399473
Chevy	Yes	GM	454	External	small bolt pattern 153 tooth	399554
Chevy	Yes	GM	LT1	External	small bolt pattern 153 tooth	399173
Chevy	Yes	GM	LT1	Internal	small bolt pattern 168 tooth	399174
Chevy	Yes	GM	All	Internal	small bolt pattern 153 tooth	399573
Chevy	Yes	GM	4.8, 5.3, 5.7, 6.0 LS-series	Internal	small bolt pattern 168 tooth	399753
Chevy	Yes	GM	'86-99 (1 pc. rear seal)	External	dual bolt pattern 168 tooth	399773 ¹
Chevy	Yes	GM	'91-98 (1 pc. rear seal)	External	dual bolt pattern 168 tooth	399873 ²
Chevy	Yes	GM	'91-95 (1 pc. rear seal)	External	dual bolt pattern 168 tooth	399973 ³
Pontiac	Yes	GM	326-455	Internal	small bolt pattern 166 tooth 2.750" crankshaft ID.	399673

1 Only for one piece rear seal engines
2 Only for Gen. V & Gen VI 454 HO & 502 HO with steel forged crankshafts
3 Only for Gen. V 454 with cast iron crankshafts

Chevrolet Flywheel Shims
These shims are an easy way to achieve optimum spacing when installing a new flywheel on Chevrolet crankshafts. These 0.030" shims manufactured from high quality steel, are a must when additional clearance is required between the starter and flywheel ring gear. Works on both automatic and standard shift flywheels with standard Chevrolet crankshaft bolt flange and flywheel.

Description	Part No.
Chevrolet Flywheel Shims	399100

Transmission Clutch Plates
TCI® offers only the finest in friction materials for your Turbo Hydramatic! Our High Performance Frictions are ideal for most street and strip applications, and our Alto Red Eagle® clutch plates are available for those who demand ultimate performance.

High Performance Clutch Plates - Provide a high coefficient of friction and high temperature resistance. Power apply applications have grooved surface area to improve clutch apply time. Suitable for both racing and street strip applications.
Special HD Alto Red Eagle® Clutch plates - Provide smoother shifts and longer life in very high horsepower applications. Red Eagle® clutches are designed with a softer, more resilient base paper which imparts less wear against the opposing steel plates. They are then saturated in a phenolic resin and undergo a second saturation in a silicate, which imparts high heat resistance to the friction paper.
Special High-Static Reverse Clutch Plates - Stops forward creep due to clutch slippage while Trans-Brake is applied. An excellent choice for Trans-Brake equipped cars. Available for TH350 and Powerglide transmissions.
Kolene® treated Steel Plates - Greatly improves heat transfer across the surface of the steel to prevent hot spots and warp due to high oil or surface temperature.

Application	Type	High Performance Frictions	Super HD Frictions	Steel Plates
TH400	Direct	224000 (5 ea.) .080	224005 (5 ea.) .080	224002 (5 ea.) .068 ^K 224003 (5 ea.) .090 ^K
	Intermediate	224500 (3 ea.) .080	224501 (1 ea.) .080 224503 (3 ea.) .080	224502 (3 ea.) .100 ^K
	Forward	224700 (5 ea.) .080		224702 (5 ea.) .077 ^K

K - Kolene treated steels.

High Performance Bands

Tougher than your average replacement part, TCI® kickdown bands feature extra reinforcement on the band lugs and a performance, red friction material. Our TH400 reverse band features a genuine Kevlar® lining for added durability.