Valve Arrangement
4.1L (250"), 4.3L (260") & 5.0L (305")
I-E-I-E-E-I-E-I (Front to rear, both banks)
6.0L (368")
I-E-I-E-I-E-I-E (Front to rear, left bank)
E-I-E-I-E-I-E-I (Front to rear, right bank)
All Other Engines
E-I-I-E-E-I-I-E (Front to rear, both banks)
SPARK PLUGS
| Application | Gap (In.) | Torque Ft. Lbs. (N.m) |
|---|---|---|
| 4.1L (250") | .060 | 10 (16) |
| 4.3L (260") | .080 | 25 (34) |
| 4.4L (267") | .045 | 22 (30) |
| 5.0L (305") | .045 | 22 (30) |
| 5.0L (307") | .080 | 25 (34) |
| 5.7L (350") | .045 | 22 (30) |
| 6.0L (368") | .060 | 25 (30) |
Spark Plug Type
| Application | AC No. |
|---|---|
| 4.1L (250") | R43NTS6 |
| 4.3L (260") | R46SX |
| 4.4L (267") | R45TS |
| 5.0L (305") | R45TS |
| 5.0L (307") | R46SX |
| 5.7L (350") | R45TS |
| 6.0L (368") | R45NSX |