Zylinderkopfschrauben Oldsmobile.
| Modell | High Performance Serie Sechskant Kopf | High Performance Serie 12-Kant Kopf | Professional Serie Sechskant Kopf | Professional Serie 12-Kant Kopf | Edelstahl Sechskant Kopf | Edelstahl 12-Kant Kopf |
|---|---|---|---|---|---|---|
| 350-455 cid with factory heads or Edelbrock heads 60519, 60529 (1976 & earlier) 7/16˝ | ||||||
| 307-350-403-455 cid (1977 & later) 1/2˝ |