Ignition Timing
Check or adjust timing with engine at normal operating temperature, distributor vacuum advance line disconnected and plugged, transmission in Neutral and idle speed set to specifications. Connect timing light to number one cylinder on 400" engine and to number eight cylinder on all others.
| Application | Timing |
|---|---|
| 400" | 5° BTDC |
| 304" Heavy Duty | 5° BTDC |
| All Others | TDC |