Comprehensive guide to the GM TH400 automatic transmission — specifications, identification, history, and adaptability for Jeep conversions.

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) …

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 …

Note: Any ATI TH400 can be made to PG length for an additional charge. Call and check core availability for 4WD units. Refundable core charge for acceptable transmission core is $250.00, If a …

We offer a TH400 setup for Rockcrawler and off-road applications. This is similar to our Stage I build but uses a HD “K” case 4×4 TH400 core with a reverse pattern manual valve body that retains engine …

Stepping up in strength and capability, the Turbo 400, or TH400, is renowned for its resilience under pressure. This three-speed automatic transmission has been the backbone of many high …

TH400 Transmissions - Durable, reliable, and ready for action. Perfect for classic Chevy trucks and SUVs. Upgrade your Chevy today!

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 …

General Motors TH400 3 speed automatic transmission specs, ratios, and information. The versatile TH400 was used in a variety of applications, including 1982 to 1990 GMC/Chevrolet 3/4 and 1 ton …

This chart breaks down the six types of Sonnax TH400 transmission parts available at different performance levels. Combine these with other Sonnax TH400 upgrades for a top-notch rebuild.