Automatic Choke
Loosen choke cover retaining screws and place cam follower on highest step of fast idle cam. Rotate choke cover against coil tension until choke valve just closes. Continue rotating cover until reference mark on cover is aligned with specified mark on choke housing. Tighten cover retaining screws.
1975 AUTOMATIC CHOKE SETTINGS
| Application |
Setting |
| 260" |
1 NR |
| 350" |
| |
Omega |
1 NR |
| Cutlass & 88 |
2 NR |
| 400" |
Index |
| 455" |
| |
California |
2 NR |
| Federal |
2 NR |
1976 AUTOMATIC CHOKE SETTINGS
| Application |
Setting |
| 2GC |
1 NR |
| 2MC |
| |
17056456, 17056457 & 17056459 |
Index |
| All Others |
1 NR |
| M4MC |
| |
17056546 |
Index |
| 17056246, 17056551 & 17056556 |
1 NR |
| All Others |
2 NR |
1977 AUTOMATIC CHOKE SETTINGS
| Application |
Setting |
| 260" 2-Bbl. |
1 NR |
| 305" 2-Bbl. |
| |
California |
1NL |
| Federal |
Index |
| High Altitude |
Index |
| 305" 2-Bbl. |
Index |
| 350" 4-Bbl. (VIN L) |
2NL |
| 350" (VIN R) & 403" 4-Bbl. |
2 NR |
1978 AUTOMATIC CHOKE SETTINGS
| Application |
Setting |
| 260" 2-Bbl. |
2 NR |
| 305" 2-Bbl. (VIN U) |
| |
California |
1/2NL |
| Federal |
Index |
| High Altitude |
Index |
| 305" 4-Bbl. (VIN H) |
2NL |
| 350" 4-Bbl. (VIN L) |
2NL |
| 350" (VIN R) & 403" 4-Bbl. |
2 NR |
1979 AUTOMATIC CHOKE SETTINGS
| Application |
Setting |
| 260" & 301" 2-Bbl. |
2 NR |
| 305" 2-Bbl. |
1 NR |
| 305" 4-Bbl. |
1 NR |
| 350" 4-Bbl. (VIN L) |
| |
Calif. |
2 NR |
| High Alt. |
1 NR |
| 350" (VIN R) & 403" 4-Bbl. |
2 NR |