Executive order
D-321
Design Development & Manufacture (DDMI)
Vehicle applications
No vehicle applications were preserved for this order.
Part records
| Part number | Model/specification | Modification | Remarks |
|---|---|---|---|
| 300hp | 1986-1993 Ford Mustang 5.0L V8 gasoline engines | Relocation of air injection hoses. Retard ignition timing from 10 degrees BTDC to 5 degrees BTDC. Install one -way check valve between PCV and inlet manifold. | |
| 375hp | 1986-1993 Ford Mustang 5.0L V8 gasoline engines |