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OLDSMOBILE

1965-69 Tune-up Specifications

Year
Engine or 
Car Model
Spark Plug
Type (AC) 
- Gap
Point
Gap
Dwell
Angle
Firing
Order
Ignition Timing 
(BTDC or Mark)1
Hot Idle
Std.
Tran
Auto
Tran 2
1965
V6-225
44S -.030
3
30
165432
600
600D
8-330 2 Bar carb 4
45S -.030
3
30
18436572
7.5° 5
550
500D
8-330 2 Bar carb 6
44S -.030
3
30
18436572
7.5° 5
550
500D
8-330 4 Bar carb
44S -.030
3
30
18436572
7.5° 5
550
500D
8-400 "442"
44S -.030
3
30
18436572
7.5° 5
550
500D
8-425  2 Bar carb 4
45S -.030
3
30
18436572
7.5° 5
550
500D
8-425  2 Bar carb 6
44S -.030
3
30
18436572
5° 5
550
500D
8-425  4 Bar carb 
44S -.030
3
30
18436572
5° 5
550
500D
1966
6-2507, 8
46N -.035
.019
31-34
153624
500  10
500D 10
6-250 9, 8
46N -.035
.019
31-34
153624
6°
600  10
600D 10
8-330 4, 7
45S -.030
3
30
18436572
7.5° 5
600  10
500D 10
8-330 4, 9
45S -.030
3
30
18436572
7.5° 5
600  10
600D 10
8-330 6, 7
44S -.030
3
30
18436572
7.5° 5
600  10
500D 10
8-330 6, 9
44S -.030
3
30
18436572
7.5° 5
600  10
600D 10
8-400 7
44S -.030
3
30
18436572
7.5° 5
600  10
550D 10
8-400 9
44S -.030
3
30
18436572
7.5° 5
600  10
600D 10
8-425  2 Bar carb 4, 7
45S -.030
3
30
18436572
7.5° 5
550  10
500D 10
8-425  2 Bar carb 4, 9
45S -.030
3
30
18436572
7.5° 5
500  10
500D 10
8-425  2 Bar carb 6, 7
44S -.030
3
30
18436572
5° 5
550  10
500D 10
8-425  2 Bar carb 6, 9
44S -.030
3
30
18436572
5° 5
500  10
500D 10
8-425  4 Bar carb  7
44S -.030
3
30
18436572
7.5° 5
550  10
500D 10
8-425  4 Bar carb 9
44S -.030
3
30
18436572
7.5° 5
500  10
500D 10
1967
6-250 7, 8
46N -.035
.019
31-34
153624
500  10
500D 10
6-250 9, 8
46N -.035
.019
31-34
153624
4°
700  13
500D 10
8-330 250hp, 7
45S -.030
3
30
18436572
7.5° 5
600  13
575D 13
8-330 250hp, 9
45S -.030
3
30
18436572
7.5° 5
650  13
600D 13
8-330 260hp, 7
44S -.030
3
30
18436572
7.5° 5
600  13
575D 13
8-330 260hp, 9
44S -.030
3
30
18436572
7.5° 5
650  13
600D 13
8-330 4 Bar carb 7
44S-.030
3
30
18436572
7.5° 5
600  13
575D 13
8-330 4 Bar carb 9
44S-.030
3
30
18436572
7.5° 5
650  13
600D 13
8-400  7
44S-.030
3
30
18436572
7.5° 5
600  13
600D 13
8-400 9
44S-.030
3
30
18436572
7.5° 5
600  13
600D 13
8-425  2 Bar carb 7
44S-.030
3
30
18436572
5° 5
575 11
575D 11
8-425  2 Bar carb 9
44S-.030
3
30
18436572
5° 5
600  11
575D 11
8-425  4 Bar carb  7
44S-.030
3
30
18436572
7.5° 5
575 11
575D 11
8-425  4 Bar carb 9
44S-.030
3
30
18436572
7.5° 5
600  11
575D 11
1968
6-250   Std. tran 8
46N -.035
.019
31-34
153624
TDC
500 13
-
6-250   Auto tran 8
46N -.035
.019
31-34
153624
4°
-
550D 13
8-350 250hp
45S-.030
.016
30
18436572
5° 5
650 13
550D 13
8-350 300hp
44S-.030
.016
30
18436572
7.5° 5
700 13
500D 13
8-350 310hp
44S-.030
.016
30
18436572
7.5° 5
700 13
500D 13
8-400 290hp
45S-.030
.016
30
18436572
5° 5
650 13
550D 13
8-400 350hp
44S-.030
.016
30
18436572
7.5° 5
700 13
500D 13
8-400
44S-.030
.016
30
18436572
2.5° 5
650 13
550D 13
8-400  442  9
44S-.030
.016
30
18436572
10° 11
700 13
500D 13
8-455 310hp
45S-.030
.016
30
18436572
5° 5
650 13
550D 13
8-455  320hp
44S-.030
.016
30
18436572
7.5° 5
700 13
500D 13
8-455  4 Bar carb
44S-.030
.016
30
18436572
7.5° 5
700 13
500D 13
Toronado 9
44S-.030
.016
30
18436572
10° 11
-
500D 13
1969
 
6-250   Std. tran 8
R46N-.035
.019
32
153624
TDC
775 13
-
6-250   Auto tran 8
R46N-.035
.019
32
153624
4°
-
625D 13
8-350 250hp
R46S-.030
.016
30
18436572
6°
675 13
600D 13
8-350 310hp
R45S-.030
.016
30
18436572
8°
675 13
575D 13
8-350 325hp
R43S-.030
.016
30
18436572
12°
675 13
575D 13
8-400 325hp
R44S-.030
.016
30
18436572
8° 5, 12
-
575D 13
8-400 350hp
R44S-.030
.016
30
18436572
2° 5
750 13
-
8-400 360hp
R43S-.030
.016
30
18436572
14° 11
750 13
650D 13
8-455 310hp
R45S-.030
.016
30
18436572
6° 5
675 13
600D 13
8-455  365hp
R44S-.030
.016
30
18436572
8° 5
-
575D 13
8-455  375hp
R44S-.030
.016
30
18436572
8° 5
-
575D 13
8-455  400hp
R44S-.030
.016
30
18436572
10° 5
-
575D 13
1970-75

1 - BTDC - Before top dead center

2 - D- Drive N- neutral

3 - Turn adjusting screw in
Clockwise until engine misfires,
then turn screw out 1/2 turn

4 - Low compression engine 

5 - At 850 rpm
6 - High compression engine

7- Without (A.I.R) Air Injector reactor system

8- SEE Chevrolet for service 
procedure

9- With (A.I.R) Air Injector 
reactor system 
10- A/C  turned on 

11- At 1250 rpm

12- Vista-cruiser 10°

13- With A/C off and idle 
compensator held closed