Executive order
D-115-8
Holley Performance Products
Vehicle applications
No vehicle applications were preserved for this order.
Part records
| Part number | Model/specification | Modification | Remarks |
|---|---|---|---|
| 300-552 | 1967-1986 GM vehicles equipped with 5.7L engines | The Chevy SysteMAX cylinder heads is a set of 5.7L cylinder heads manufactured out of aluminum with the folliwnig specifications: Intake valve diameter of 2.02", exhaust valve diameter of 1.6", and a combustion chamber volume of 68 cc. |