Ford C3 – ATSG (Automatic Transmission Service Group)

The C-3 Transmission was first introduced in 1973. This supplement brings the latest information to the rebuilder technician. This model  transmission is found in late model Mustangs and Thunderbirds.

The C-3 Transmission is a fully automatic transmission with three forward speeds and one reverse. It consists of a welded torque converter, a two unit planetary gear train, and a hydraulic system to control gear selection and automatic shifts. The planetary gear train is the Simpson Design with two gear sets in series yvith a common sun gear. Two friction clutches, two bands and a roller clutch are used to control gear operation.

Some of the differences in the late model unit are: The direct drum is now a metal stamping instead of a casting, the roller clutch inner race is pressed onto the rear case hub, where as the previous models the race was bolted into the case. The later models do not have a return spring in the reverse servo. The front seal has been changed in the late models and use the same seal as the A4LD. Note that the A4LD seal will not interchange on the 1981 and earlier C-3. If used on early models, front seal pop-out will occur.

Applications (US)

  • 1974–1980 Ford Pinto
  • 1974–1977 Mercury Capri
  • 1978–1983 Ford Fairmont
  • 1970–1986 Ford Mustang
  • 1981–1982 Ford Granada
  • 1974–1986 Smaller rear wheel drive Lincolns
  • 1974–1980 Mercury Bobcat
  • 1978–1983 Mercury Zephyr
  • 1979–1986 Mercury Capri
  • 1983–1986 Mercury Marquis/Ford LTD
  • 1985–1989 Merkur XR4Ti
  • 1983-1989 Thunderbird

Applications (EU)

  • 1972–1985 Ford Granada
  • 1972–1975 Ford Consul
  • 1982–1987 Ford Sierra
  • 1979–1987 Ford Capri
  • 1974–1982 Ford Cortina
  • 1976–1982 Ford Taunus
  • 1970–1980 Ford Escort Mk1 and Mk2


  • PUMP

Language: English
Format: PDF
Pages: 24

Ford C3 – ATSG (Automatic Transmission Service Group) PDF free online