The Novak Guide to the GM TH400 Automatic Transmission
Comprehensive guide to the GM TH400 automatic transmission — specifications, identification, history, and adaptability for Jeep conversions.
TH400 Specs, Info, and Identification | Drivetrain Resource
The TH400 is an aluminum cased three speed automatic transmission that was produced by GM. It was introduced for the 1965 model year and made its debut in Cadillacs, and is respected for its durability …
Turbo-Hydramatic - Wikipedia
These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain, providing three forward speeds plus reverse. The Turbo-Hydramatic or Turbo Hydra-Matic (THM) …
ATI Racing Transmissions - TH400 Drag Racing Transmissions
ATI now has an answer for this market and offers three variations of a 2-speed Turbo 400! OEM cased units are rated to 1800 HP and not intended for heavy weight cars. ATI SuperCase recommended …
Chevy TH400 Transmission - Monster Transmission
TH400 Transmissions - Durable, reliable, and ready for action. Perfect for classic Chevy trucks and SUVs. Upgrade your Chevy today!
Overview of the GM TH400 Transmission - gearstar.com
The GM TH400 transmission is a three-speed automatic transmission that was longitudinally positioned behind the engine. This placement is aimed at providing the best power ratio and durability for rear …
GM TH400 Transmission Specs & Ratios
The TH400 is highly regarded for its strength and reliability, even in heavy duty applications. Its central design would become the foundation of late model overdrive transmissions used in GMC and …
GM Turbo TH400 Transmission: Specs
The TH400 is a venerable transmission that has its roots in mid-century automotive tradition but has since been modified for modern use. It is an automatic shift, positioned longitudinally behind the …
TH400 | TH-400 | Turbo 400 - GM Automatic Transmissions
Originally the TH400 was known as the Super Turbine 400. TH-400 automatic transmissions are a fantastic 3 speed automatic transmission and back up some serious GM torque from the small block …
GM’s TH350 And TH400: Transmission Differences Explained
Sep 11, 2025 · The TH350 and TH400 are GM’s most legendary transmissions. Learn the differences in strength, weight, performance, and applications.