Ford IDI Diesel Engines
6.9L IDI Ford
View 6.9L IDI Specifications
Manufacturer: International Harvester
Years of Production: 1983 - 1987
Displacement: 6.9 liters, 420 ci
7.3L IDI Ford
View 7.3L IDI Specifications
Manufacturer: International Engine Co.
Years of Production: 1988-1994
Displacement: 7.3 liters, 444 ci
Ford IDI Diesel Timeline:
| Year | Significant Changes/Notes |
| 1983 | 6.9 L IDI introduced |
| 1984 | 6.9 L compression increased to 21.5:1 |
| 1985 | |
| 1986 | 6.9 L power ouput increased to 170 hp & 315 lb-ft torque |
| 1987 | 6.9 L bore increased to 4.11 inches, increasing displacement to 7.3 L (444 ci) |
| 1988 | 7.3 L IDI replaces 6.9 L |
| 1989 | |
| 1990 | |
| 1991 | |
| 1992 | 7.3 L IDI output increased to 185 hp & 360 lb-ft. torque |
| 1993 | 7.3 L IDI recieves turbocharger |
| 1994 | 7.3 L IDI replaced by 7.3 L Power Stroke mid-year |
For information on Power Stroke diesel engines,
please visit Power Stroke Diesel Specs