The Ford Automatic Overdrive (AOD) is a four-speed automatic transmission that incorporates a new fuel-efficient torque converter, split torque in third gear and a full mechanical drive in fourth (overdrive). In third gear, forty per cent of the power is transmitted hydrodynamically; the other sixty per cent is transmitted mechanically by direct connection between the engine and transmission. In overdrive, engine power completely bypasses the torque converter and follows a direct mechanical path to the driveshaft.

  • Supplemental Notes:
    • Presented at SAE Congress and Exposition, Detroit, 25-29 February 1980.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Dabich, S
  • Publication Date: 1980

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00322894
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE 800004, HS-029 588
  • Files: HSL, TRIS
  • Created Date: Jan 19 1984 12:00AM