Image not recorded
FarmallModel A
Farmall 666
Utility
- power
- Not recorded
- displacement
- Not recorded
- Cylinders
- 6
- Forward gears
- 10
Head to head · Utility
Utility

Utility
How they compare
666 is in the 93rd percentile; Hydro 70 is in the 93rd · 5,720 models
666 is in the 67th percentile; Hydro 70 is in the 77th · 5,107 models
Full comparison
| Spec | Farmall 666 | Farmall Hydro 70 | Difference |
|---|---|---|---|
| Manufacturer | Farmall | Farmall | Same |
| Model | 666 | Hydro 70 | — |
| Category | Utility | Utility | Same |
| Spec | Farmall 666 | Farmall Hydro 70 | Difference |
|---|---|---|---|
| Manufacturer | International Harvester | International Harvester | Same |
| Model | Not recorded | 4.8L 6-cyl Gasoline | — |
| Rated RPM | 2,000RPM | 2,400RPM | ▲ Hydro 70+400 RPM · +20% |
| Cylinders | 6 | 6 | Same |
| Displacement | Not recorded | 291ci | — |
| Bore | Not recorded | 3.8in | — |
| Stroke | Not recorded | 4.4in | — |
| Spec | Farmall 666 | Farmall Hydro 70 | Difference |
|---|---|---|---|
| Type | Not recorded | Hydrostatic | — |
| Spec | Farmall 666 | Farmall Hydro 70 | Difference |
|---|---|---|---|
| Operating Weight | 7,053lb | 8,200lb | ▲ Hydro 70+1,147 lb · +16% |
| Spec | Farmall 666 | Farmall Hydro 70 | Difference |
|---|---|---|---|
| Steering Type | Hydrostatic Power | Hydrostatic Power | Same |
| Spec | Farmall 666 | Farmall Hydro 70 | Difference |
|---|---|---|---|
| Type | Rear | Not recorded | — |
| Speed 1 | 540rpm | Not recorded | — |
| Spec | Farmall 666 | Farmall Hydro 70 | Difference |
|---|---|---|---|
| Hitch Type | IH Fast Hitch | Not recorded | — |
| Hitch Category | Category 2 | Not recorded | — |
| Spec | Farmall 666 | Farmall Hydro 70 | Difference |
|---|---|---|---|
| Steering Type | Hydrostatic Power | Hydrostatic Power | Same |
| Spec | Farmall 666 | Farmall Hydro 70 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Category context