M49 ⚠ Disputed

Chevrolet · Regular Production Option

Turbo Hydra-Matic (TH400 per 67–72 list; TH350 per 73–87 list)

Years 1967–81 Models 1

Also described as THM350 3-speed automatic

Documented applications

C/K Trucks →

• 1967–72 ⚠ Disputed

  Meaning shifts across generations

• 1973–81 ⚠ Disputed

  Same code = TH400 in 67–72 list

This page aggregates every documented appearance of M49 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.