Emission Classification Tables
LIGHT DUTY RATED ENGINES
| Engine VIN Code | Type |
|---|---|
| W | 4.3L V6 (CSFI With GVWR Below 8501) |
| M | 5.0L V8 (CSFI) |
| R | 5.7L V8 (CSFI With GVWR Below 8501) |
| J | 7.4L V8 (SMPI With GVWR Below 8501) |
HEAVY DUTY RATED ENGINES
| Engine VIN Code | Type |
|---|---|
| W | 4.3L V6 (CSFI With GVWR Above 8500) |
| R | 5.7L V8 (CSFI With GVWR Above 8500) |
| F | 6.5L V8 H.O. (Heavy Duty) Diesel |
| J | 7.4L V8 (SMPI With GVWR Above 8500) |