| Standard Hours | Manufacturer Warranty Hours | Skill Level | Notes |
| Replace |
| Complete Assembly Without Transfer of Parts |
| Engine Model 4G63 | 11.3 | 0.0 | B | Does Not Include: Transfer Of An Part Of Engine Or Replacement Of Optional Equipment. |
| Engine Model 420A | 9.0 | 0.0 | B | Does Not Include: Transfer Of An Part Of Engine Or Replacement Of Optional Equipment. |
| Note |
| With AC, Add | 0.5 | 0.0 | B | |
| With Auto Trans, Add | 0.8 | 0.0 | B | |
| Complete Assembly With Transfer of Parts |
| Engine Model 4G63 | 12.3 | 0.0 | B | Includes: Transfer Of All Fuel & Electrical Units. Does Not Include Transfer Of Optional Equipment. |
| Engine Model 420A | 10.0 | 0.0 | B | Includes: Transfer Of All Fuel & Electrical Units. Does Not Include Transfer Of Optional Equipment. |
| Note |
| With AC, Add | 0.5 | 0.0 | B | |
| With Auto Trans, Add | 0.8 | 0.0 | B | |
| Long Block |
| With 4G63 |
| With Turbo | 12.3 | 0.0 | B | |
| With 420A | 10.0 | 0.0 | B | |
| Short Block |
| Engine Model 4G63 |
| With Turbo | 15.1 | 10.0 | A | Includes: R&I Engine And Replacement Of All Necessary Components. |
| Engine Model 420A | 12.8 | 8.2 | A | Includes: R&I Engine And Replacement Of All Necessary Components. |
| NOTE |
| With AC, Add | 0.5 | 0.4 | A | |
| With Auto Trans, Add | 0.8 | 0.5 | A | |
| To Overhaul Cylinder Head, Add | 5.9 | 4.2 | A | |
| Overhaul/Rebuild |
| Engine Model 4G63 | 31.1 | 0.0 | A | Includes: Disassemble & Clean Engine. Ridge Ream & Hone Cylinders. Fit Pistons, Rings, Pins, Main & Rod Bearings, R&I Engine, Grind Valves & Tune-Up. |
| Engine Model 420A | 28.8 | 0.0 | A | Includes: Disassemble & Clean Engine. Ridge Ream & Hone Cylinders. Fit Pistons, Rings, Pins, Main & Rod Bearings, R&I Engine, Grind Valves & Tune-Up. |
| Note |
| With AC, Add | 0.5 | 0.0 | A | |
| With Auto Trans, Add | 0.8 | 0.0 | A | |