
David BrownModel A
David Brown 770 Selectamatic
Utility
- power
- 38.3 hp
- displacement
- 164 ci
- Cylinders
- 3
- Forward gears
- 12
Head to head · Utility

Utility
Utility
How they compare
770 Selectamatic is in the 32nd percentile; 545 is in the 36th · 5,383 models
770 Selectamatic is in the 43rd percentile; 545 is in the 46th · 5,580 models
770 Selectamatic is in the 23rd percentile; 545 is in the 23rd · 5,720 models
770 Selectamatic is in the 50th percentile; 545 is in the 23rd · 4,941 models
Full comparison
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Manufacturer | David Brown | Farmtrac | — |
| Model | 770 Selectamatic | 545 | — |
| Category | Utility | Utility | Same |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Manufacturer | David Brown | Not recorded | — |
| Model | AD3/49 | Not recorded | — |
| Power Output | 38.3hp | 42hp | ▲ 545+3.7 hp · +10% |
| Rated RPM | 2,000RPM | Not recorded | — |
| Cylinders | 3 | 3 | Same |
| Displacement | 164ci | 175ci | ▲ 545+11 ci · +7% |
| Bore | 3.9in | Not recorded | — |
| Stroke | 4in | Not recorded | — |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Type | Gear | Constant mesh | — |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Length | 112in | 129in | ▲ 545+17 in · +15% |
| Width | 63.8in | 76in | ▲ 545+12.2 in · +19% |
| Height | 80.3in | 85in | ▲ 545+4.7 in · +6% |
| Operating Weight | 3,730lb | 4,160lb | ▲ 545+430 lb · +12% |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| System Type | Open Center | Not recorded | — |
| Steering Type | Manual | Not recorded | — |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Type | Live | Not recorded | — |
| Speed 1 | 540rpm | Not recorded | — |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Front Tire Size | 6.00-16 | 16-Jun | — |
| Rear Tire Size | 12.4-28 | 13.6-28 | — |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Hitch Type | Category I | Not recorded | — |
| Hitch Category | I | Not recorded | — |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Manual | Not recorded | — |
| Brake Type | Internal expanding shoe | Not recorded | — |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Coolant | 3gal | Not recorded | — |
| Spec | David Brown 770 Selectamatic | Farmtrac 545 | Difference |
|---|---|---|---|
| Type | Open Operator Station | Not recorded | — |
Category context