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PONTIAC & TEMPEST
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
.025
.022
31-37
153624
IGN
.012H
.012H
8
.025
.016
21-30
16258374
1    Flywheel
.012H
.012H
1949-52
6
.025
.016
31-37
153624
1    Flywheel
.012H
.012H
8
.025
.016
21-30
16258374
1
.012H
.012H
1953
6
.025
.016
31-37
153624
2
.012H
.012H
8
.025
.016
21-30
16258374
1
.012H
.012H
1954
6
.025
.016
38-45
153624
2
.012H
.012H
8
.025
.016
21-30
16258374
1
.012H
.012H
1955
All
.035
.016
26-33
18436572  4
5
Zero
Zero
1956
V8 1 Carb.
.035
.016
26-33
18436572  4
5
Zero
Zero
V8  2 Carbs.
.035
.016
26-33
18436572  4
10°
Zero
Zero
1957
All
.035
3
30
18436572  4
5
Zero
Zero
1958
All
.035
3
30
18436572  4
Zero
Zero
1959-60
All
.035
3
30
18436572  4
Hydraulic
1961
4-195
.035
.016
74-76
1342
Hydraulic
V8-215  
.032
.016
28-32
18436572 4
Hydraulic
V8-389
.035
3
30
18436572 4
Hydraulic
1962
4-195 Dist. 1110282
.035
.016
74-76
1342
Zero
Zero
4-195 Dist. 1110283
.035
.016
74-76
1342
Zero
Zero
4-195 Dist. 1110284
.035
.016
31-34
1342
Zero
Zero
4-195 Dist. 1110285
.035
.016
31-34
1342
Zero
Zero
V8-215
.032
.016
28-32
18436572  4
Zero
Zero
V8-389
.035
3
30
18436572  4
Zero
Zero
1963
4-195
.035
.016
31-34
1342
Zero
Zero
V8-326
.035
3
30
18436572  4
Zero
Zero
V8-389  1 Carb.	
.035
3
30
18436572  4
Zero
Zero
V8-389  Tri-Carb.
.035
3
30
18436572  4
Zero
Zero
V8-421  Tri-carb.
.035
3
30
18436572  4
Zero
Zero
1964
6-215
.035
.016
31-34
153624
1 Turn 6
V8-326
.035
3
30
18436572  4
Zero
Zero
V8-389, 421
.035
3
30
18436572  4
Zero
Zero
1- Early 1949, IGN mark. Late 1949 and 
1950-54, first line to come under pointer
is for standard heads , second line for 
high compression heads, third line is 
TDC.

2- Center of three lines

3-Turn Adjusting screw in, until engine
misfires, then back off screw (ccw) 1/2 turn.

4- Cylinder numbering (front to rear): Left
bank 1-3-5-7  Right bank 2-4-6-8.

5-First line to come under pointer while
cranking engine.