Image not recorded
International HarvesterModel A
International Harvester 666
Utility
- power
- Not recorded
- displacement
- 312 ci
- Cylinders
- 6
- Forward gears
- 5
Head to head · Utility
International Harvester 666 vs Massey-Harris 55
Image not recorded
Massey-HarrisModel B
Massey-Harris 55
Utility
- power
- Not recorded
- displacement
- 312 ci
- Cylinders
- 4
- Forward gears
- 5
International HarvesterInternational Harvester 666
vs
Massey-HarrisMassey-Harris 55
How they compare
Headline specs vs. the whole Utility
Engine Displacement
= Effectively tied666312 ci
55312 ci
Median Utility Tractor183 ci
666 is in the 85th percentile; 55 is in the 85th · 5,580 models
Cylinders
▲ 666 higher · +2 (+50%)6666
554
Median Utility Tractor4
666 is in the 93rd percentile; 55 is in the 50th · 5,720 models
Forward Gears
= Effectively tied6665
555
Median Utility Tractor12
666 is in the 6th percentile; 55 is in the 6th · 4,941 models
Operating Weight
▲ 55 higher · +170 lb (+2%)6667,053 lb
557,223 lb
Median Utility Tractor5,303 lb
666 is in the 67th percentile; 55 is in the 69th · 5,107 models
666 (A)55 (B)Median Utility Tractor
Full comparison
Every spec, side by side
General Information
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Manufacturer | International Harvester | Massey-Harris | — |
| Model | 666 | 55 | — |
| Category | Utility | Utility, Standard Tread | — |
Engine
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Manufacturer | International Harvester | Massey-Harris | — |
| Model | D312 | Not recorded | — |
| Rated RPM | 2,000RPM | 1,507RPM | ▲ 666+493 RPM · +33% |
| Cylinders | 6 | 4 | ▲ 666+2 · +50% |
| Displacement | 312ci | 312ci | Same |
| Bore | 3.9in | 4.5in | ▲ 55+0.6 in · +15% |
| Stroke | 4.4in | 6in | ▲ 55+1.6 in · +36% |
Transmission
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Type | Sliding gear | Gear | — |
Dimensions & Weight
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Length | Not recorded | 146in | — |
| Height | Not recorded | 83.3in | — |
| Operating Weight | 7,053lb | 7,223lb | ▲ 55+170 lb · +2% |
Hydraulics
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Steering Type | Hydrostatic power | Manual | — |
Power Take-off (PTO)
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Type | Independent Rear PTO | Independent | — |
| Speed 1 | 540rpm | Not recorded | — |
Hitch & Towing
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Hitch Type | IH Fast Hitch | Not recorded | — |
| Hitch Category | II | Category 3 | — |
| Hitch Position | Rear | Rear | Same |
Chassis & Drive
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Hydrostatic power | Manual | — |
| Brake Type | Dry disc | Not recorded | — |
Electrical
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Battery Voltage | Not recorded | 6V | — |
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Coolant | Not recorded | 7gal | — |
Operator Station
| Spec | International Harvester 666 | Massey-Harris 55 | Difference |
|---|---|---|---|
| Type | Open or Two-post ROPS (optional) | Not recorded | — |
Category context
Both models against the field
Engine Displacement
median 183 ciA · 85th percentile (312 ci)B · 85th percentile (312 ci)
Cylinders
median 4A · 93rd percentile (6)B · 50th percentile (4)
Forward Gears
median 12A · 6th percentile (5)B · 6th percentile (5)
Operating Weight
median 5,303 lbA · 67th percentile (7,053 lb)B · 69th percentile (7,223 lb)
A · 666B · 55Median Utility Tractor