| 3.8L (229") V6 (Vin 9) |
| Ignition Timing |
0° BTDC at 1200 RPM |
| Spark Plugs |
| Type |
AC Delco R45TS |
| Gap |
.045" (1.1 mm) |
| Fuel System (Make & Type) |
Rochester E2ME |
| Hot Idle |
475/850 RPM |
| Fast Idle (Transmission In Neutral) |
| Auto. Trans. |
2200 RPM |
| Cam Step (Auto. Trans .& Man. Trans) |
High |
| 3.8L (231") V6 (Vins A & 8) |
| Ignition Timing |
15° BTDC at 450 RPM |
| Spark Plugs |
| Type |
AC Delco R45TS8 |
| Gap |
.080" (2.0 mm) |
| Fuel System (Make & Type) |
| 2-Bbl. |
Rochester E2ME |
| 4-Bbl. |
Rochester E4ME |
| Hot Idle |
450/900 |
| Fast Idle (Transmission In Neutral) |
| Auto. Trans. |
| FWD Models |
2100 RPM |
| RWD Models |
2200 RPM |
| Cam Step (Auto. Trans .& Man. Trans) |
High |
| 5.0L (305") V8 |
| Ignition Timing |
| Carbureted |
| Auto. Trans. |
6° BTDC at 500 RPM |
| Man. Trans. |
6° BTDC at 700 RPM |
| Fuel Injected |
6° BTDC at 475 RPM |
| Spark Plugs |
| Type |
AC Delco R45TS |
| Gap |
.045" (1.1 mm) |
| Fuel System (Make & Type) |
| Carbureted |
Rochester E4ME |
| Fuel Injected |
GM Model 400 TBI |
| Hot Idle |
| Carbureted |
| Auto. Trans. |
500/650 |
| Man. Trans. |
700/800 |
| Fuel Injected |
475 |
| Fast Idle (Transmission In Neutral) |
| Carbureted |
| Auto. Trans. |
2200 RPM |
| Man. Trans. |
1800 RPM |
| Fuel Injected |
Non-Adjustable |
| Cam Step (Auto. Trans .& Man. Trans) |
High |