Ignition Timing
Adjust timing with hot (slow) idle speed set, engine running at normal operating temperature, distributor vacuum advance line disconnected and plugged, and transmission in Neutral.
| Application |
Timing |
| Breaker Point Ignition |
| |
318" |
2.5°BTDC |
| |
360" |
TDC |
| Electronic Ignition |
| |
318" |
| |
|
Light Duty |
| |
|
|
Man. Trans. |
2.5°BTDC |
| |
|
|
Auto. Trans. |
TDC |
| |
|
Heavy Duty |
| |
|
|
Calif. |
TDC |
| |
|
|
Federal |
| |
|
|
Man. Trans. |
5°BTDC |
| |
|
|
Auto. Trans. |
TDC |
| |
318"-3 |
2.5°BTDC |
| |
360" |
TDC |
| |
400" |
| |
|
Light Duty |
10°BTDC |
| |
|
Heavy Duty |
2.5°BTDC |
| |
413" (Motor Home) |
5°BTDC |
| |
440" |
10°BTDC |