1991 diesel 2500/3500 pickups
Every diesel offering in the data for 1991. Ratings are the highest offered across the trucks in each row, and transmissions are those of the whole year range shown, so they may differ for 1991 itself; check each range's notes.
Horsepower
- Ford · International 7.3L IDI V8180 hp
- General Motors · GM 6.2L Detroit Diesel V8150 hp
- Ram / Dodge · Cummins 6BT 5.9L 12-valve160 hp
Torque
- Ford · International 7.3L IDI V8345 lb-ft
- General Motors · GM 6.2L Detroit Diesel V8280 lb-ft
- Ram / Dodge · Cummins 6BT 5.9L 12-valve400 lb-ft
Ratings are the highest offered in each row; see the table below for exact year ranges and notes.
| Brand | Trucks | Engine | Range | hp / lb-ft | Transmissions |
|---|---|---|---|---|---|
| Ford | Ford F-250, Ford F-350 | International 7.3L IDI V8 | 1989–1991 | 180 / 345 | Automatic (E4OD), 5-speed manual (ZF) |
| General Motors | Chevrolet C/K 2500, Chevrolet C/K 3500, GMC Sierra C/K 2500, GMC Sierra C/K 3500 | GM 6.2L Detroit Diesel V8 | 1991 | 150 / 280 | Not listed |
| Ram / Dodge | Dodge D250/W250, Dodge D350/W350 | Cummins 6BT 5.9L 12-valve | 1989–1993 | 160 / 400 | 5-speed manual, 3-speed automatic |
What stood out in 1991
Editorial opinion, based on the criteria listed.
Pick: Dodge Ram 250/350 with the Cummins 6BT (160 hp / 400 lb-ft)
Runner-up: Ford F-250/F-350 with the 7.3L IDI (180 hp / 345 lb-ft)
Ram's 400 lb-ft led again, against 345 lb-ft for Ford's IDI and 280 lb-ft for GM's 6.2L. That 150 hp / 280 lb-ft rating is the strongest GM published for the 6.2 in this comparison, but it still trailed both rivals on torque. GM's older R/V-series trucks overlapped with its C/K line this year, so the GM comparison rests on the 6.2L only. Editorial pick, weighted toward torque.
Criteria: Peak rated torque; Rated horsepower