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OLDSMOBILE & F-85
1946-64 Tune-up Specifications
Year
Engine or 
Car Model
Spark 
Plug Gap
Point
Gap
Dwell
Angle
Firing
Order
Ignition Timing 
(BTDC or Mark)
Valve Lash
Intake
Exhaust
1946-48
6
.040
.022
31-37
153624
TDC  Flywheel
.008H
.011H
8
.030
.016
21-30
16258374
Ball   Flywheel
.008H
.011H
1949-50
6
.040
.022
31-37
153624
TDC Flywheel
.008H
.011H
8
.030
.016
26-33
18736542 1
2
Zero
Zero
1951
All
.030
.016
26-33
18736542 1
Slot
Zero
Zero
1952-54
All
.030
.016
26-33
18736542 1
Slot
Zero
Zero
1955-56
All
.030
.016
26-33
18736542 1
4
Zero
Zero
1957
All
.030
3
30
18736542 1
4
Zero
Zero
1958
All
.030
3
30
18736542 1
Zero
Zero
1959
All
.030
3
30
18736542 1
Zero
Zero
1960
With 2 bar. Carb
.030
3
30
18736542 1
Zero
Zero
With 4 bar. Carb
.030
3
30
18736542 1
Zero
Zero
1961
F85 Std. tr.-155 hP
.040
3
30
18436572 1
Zero
Zero
F85 Auto tr.-155 hp
.040
3
30
18436572 1
7 1/2°
Zero
Zero
F85 Std.  tr.-185 hp
.040
3
30
18436572 1
Zero
Zero
F85 Auto tr.-185 hp
.040
3
30
18436572 1
7 1/2°
Zero
Zero
F85-215 hp
.025
3
30
18436572 1
10°
Zero
Zero
Olds 2 Bar. carb
.030
3
30
18736542 1
Zero
Zero
Olds 4 Bar. carb
.030
3
30
18736542 1
Zero
Zero
1962
F85,155 hp Std. tran
.030
3
30
18436572 1
Zero
Zero
F85,155 hp Auto tran
.030
3
30
18436572 1
7 1/2°
Zero
Zero
F85,185 hp Std. tran
.030
3
30
18436572 1
5°
Zero
Zero
F85,185 hp Auto tran
.030
3
30
18436572 1
7 1/2°°
Zero
Zero
F85-215 hp
.030
3
30
18436572 1
10°
Zero
Zero
Olds- 260 hp
.030
3
30
18736542 1
2 1/2°
Zero
Zero
Olds all others
.030
3
30
18736542 1
Zero
Zero
1963
F85,155 hp Std. tran
.030
3
30
18436572 1
Zero
Zero
F85,155 hp Auto tran
.030
3
30
18436572 1
7 1/2°
Zero
Zero
F85,185 hp
.030
3
30
18436572 1
7 1/2°
Zero
Zero
F85,195 hp
.030
3
30
18436572 1
7 1/2°
Zero
Zero
F85-215 hp
.030
3
30
18436572 1
10°
Zero
Zero
Olds- 260 hp
.030
3
30
18736542 1
2 1/2°
Zero
Zero
Olds all others
.030
3
30
18736542 1
Zero
Zero
1964
F85- V6 225
.030
3
30
165432 5
Zero
Zero
F85- V8 330
.030
3
30
18436572 1
7 1/2°
Zero
Zero
Olds- V8 330
.030
4
30
18436572 1
7 1/2°
Zero
Zero
V8-394  Std. tran 
.030
3
30
18736542 1
2 1/2°
Zero
Zero
V8-394  Auto tran
.030
3
30
18736542 1
Zero
Zero
1- Cylinder  numbering front to rear:
Left 1357 Right 2468

2- Between two steel balls.

3- Turn adjusting screw in until engine
begins to misfire, then back screw 1/2 
turn
4- Cars with notch, set at leading edge of
notch. Cars with three notches, set at 
center one.

5- Cylinder numbering front to rear:
Left 135 Right 246