| MODEL | FC-150 48-7/16" Tread | FC-150 57" Tread | FC-170 63-7/16" tread | FC-170 With Dual Rear Wheels |
| Make | Spicer | Spicer | Spicer | Spicer |
| Model | 25 | 44-IF | 44-F | 44-F |
| Capacity | 2000 lb. {907 kg} | 3000 lb {1360 kg} | 3500 lb {1587 kg} | 3500 lb {1587 kg} |
| Description | Full Floating Hypoid Gears | Full Floating Hypoid Gears | Full Floating Hypoid Gears | Full Floating Hypoid Gears |
| Universal Joints Standard | ||||
| make | Spicer | Spicer | Spicer | Spicer |
| type | Cardan Cross | Cardan Cross | Cardan Cross | Cardan Cross |
| Universal Joints Optional | ||||
| make | Bendix | Bendix | Bendix | Bendix |
| type | Constant Velocity | Constant Velocity | Constant Velocity | Constant Velocity |
| Universal Joints Optional | ||||
| make | Rzeppa | Rzeppa | Rzeppa | Rzeppa |
| type | Constant Velocity | Constant Velocity | Constant Velocity | Constant Velocity |
| King Pin Bearing Preload | 12-16 lb | 12-16 lb | 12-16 lb | 12-16 lb |
| Drive Pinion Offset | 1.38" | 1.50" | 1.50" | 1.50" |
| Number of Differential Pinions | 2 | 2 | 2 | 2 |
| Gear Ratio Standard | 5.38:1 | 5.38:1 | 4.89:1 | 4.89:1 |
| Gear Ratio Optional | 4.27:1 | 5.89:1 | ||
| Gear Ratio Optional | 5.38:1 | |||
| Ring Gear Pitch Diameter | 7.75" | 8.5" | 8.5" | 8.5" |
| Pinion Adjustment | Shim | Shim | Shim | Shim |
| Pinion Bearing Adjustment | Shim | Shim | Shim | Shim |