Mainshaft: Labor Times
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| 4 Speed, Hydramatic (M20) | ||||
| Transmission Mainshaft | 6.2 | 4.4 | B | Includes: R&R Transmission. |
| Note | ||||
| With Skid Plate, Add | 0.5 | 0.3 | B |
| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes | |
| Replace | ||||
| 4 Speed, Hydramatic (M20) | ||||
| Transmission Mainshaft | 6.2 | 4.4 | B | Includes: R&R Transmission. |
| Note | ||||
| With Skid Plate, Add | 0.5 | 0.3 | B |