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Frequently Asked Questions

Transmission Lookup



The Turbo Hydramatic 400 was first introduced for the 1964 model year under the name "Turbo Hydra-Matic" in Cadillacs and "Super Turbine" in Buicks. The following year, application expanded to Oldsmobile and Pontiac and to some full-sized Chevrolets. Many of the Buick, Cadillac, and Oldsmobile THM400s produced between 1964-67 were equipped with a Switch-Pitch Torque converter variable-pitch Stator (turbine), which is sought after by collectors and drag racers. These can be identified outside the vehicle (with the torque converter removed) by a narrow front pump spline. Externally the switch pitch version has two electrical connections, where the non-switch pitch THM400 has only one. GM used a Switch Pitch torque converter in the Buick twin turbine Dynaflow transmission between 1955–1963 and the Super Turbine 300 two speed transmissions used by Oldsmobile Pontiac, and Buick divisions between 1964-1967.
TH400 Transmission Bands
TH400 Transmission Bands, High Performance and Stock
Filters/Filter Kit
400,TH400,3L80,GM,Filters and Filter Kits
TH400,400,3L80,GM,Mega Combo Kits,Master Overhaul Kits,Banner kit(Less Steels),Overhaul Kits
Gaskets,O-Rings,Sealing Rings
TH400,400,3L80,GM,Gaskets,O-Rings,Sealing Rings and Kits
Friction & Steel Kits
TH400,400,3L80,GM,Friction and Steel Modules, High Performance Power Packs and Clutch packs
Shift,Tow Correction Kits
TH400,400,3L80,High Performance,Aftermarket, and OE Valve correctioal kits
400,TH400,3L80,Accumulators,Servos,and Components
TH400,400,3L80,GM,Planetary Assemblies and kits
Drums,Clutch Hubs
400,TH400,3L80,GM,Clutch Drums,Drum Assemblies and Kits
Solenoids,Electrical Components
400,TH400,3L80,Solenoids,Electrical Components
400,TH400,3L80,GM,Bushings and Kits
400,TH400,3L80,Aftermarket Bearings and Bearing Kits
TH400 Valve Body Assembly
TH400,400,3L80,GM,Valve Body Assemblies
Thrust Washers, Bearings, Shims/Kits
TH400,400,3L80,GM,Thrust Washers,Bearings,Shims and Kits
400/TH400/3L80,Snap Rings
TH400,400,3L80,GM,OE Stock,Hardened,Cryo-treated,Billet Shafts
Conversion Kits,Adapters,Mounts
400,TH400,3L80,Conversion Kits,Adapters,Mounts
Metal Clad Seals
400,TH400,3L80,Metal Clad Seals
Misc. Components/Kits
TH400,400,3L80,GM,Miscellaneous Components,Servos,Accumulators,Shafts,Snap Rings,Modulators
Slip Yokes
400,TH400,3L80,Slip Yokes
Technical Manuals,ATSG Books,Updates Videos
TH400,400,3L80,GM,Technical Manuals,ATSG Books,Updates Videos
Stall Converters
TH400,400,3L80,GM,Torque converters Stock,High Performance Stall Converters
Flywheels,Flexplates,Dust Covers
400,TH400,3L80,Flywheels,Flexplates,Dust Covers
400,TH400,3L80,Linkages and brackets
Cases, Housings/Components
400,TH400,3L80,GM,Cases,Housings and Components
Transmission Tools
TH400,400,3L80,GM,Transmission Rebuild Tools,Problem Solvers
Pressure Regulator Valve Kit - GM 400
Kit, Valve, Pressure Regulator, 400, GM (91-UP)
Price: $43.99
Kit, Valve, Pressure Regulator, 400, GM (91-UP)
Kit, Valve, Pressure Regulator, 400, GM (91-UP)
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