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PONTIAC

1965-75 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
6-215 3
46N -.035
.016
31-34
153624
590  4
490D 4
V8-326
45S -.035
5
30
18436572
6°
590  4
490D 4
V8-389,421
45S -.035
5
30
18436572
6°
525  4
500D 4
1966
6-230
44S -.035
.016
31-34
153624
600  4
500D 4
6-230 With A.I.R  6
44S -.035
.016
31-34
153624
5° ATC
700  7
600D 7
V8s
45S -.035
5
30
18436572
6°
600  4
500D 4
V8s With A.I.R  6,8
45S -.035
5
30
18436572
4° ATC
700  7
600D 7
Tri-Carb
44S -.035
5
30
18436572
6°
600  4
500D 4
Tri-Carb 6
44S -.035
5
30
18436572
6°
700  7
600D 7
1967
6-230
44N -.035
.016 31-34 153624 600 4 500D 4
6-230 With A.I.R 6
44N -.035 .016 31-34 153624 TDC
700  7
600D 7
8-326, 400 
2 bar carb
45S -.035
5
30
18436572
6°
600  4
500D 4
8-326, 400 
2 bar carb 6
45S -.035
5
30
18436572
6°
700  9
600D 9
8-326, 400 
4 bar carb 
45S -.035
5
30
18436572
6°
600  4
600D 4
8-326, 400 
2 bar carb 6
45S -.035
5
30
18436572
6°
700  9
600D 9
8-400 Hi perf
44S -.035
5
30
18436572
6°
700  4
600D 4
8-428
44S -.035
5
30
18436572
6°
700  4
650D 4
8-428 With A.I.R
44S -.035
5
30
18436572
6°
700  7
650D 7
1968
6-250 1 bar carb
44N -.035
.016 31-34 153624 TDC
700/
500 7
600/
500 7
6-250 4 bar carb
44N -.035
.016
31-34
153624
4°
800/
600 7
600/
500 7
8-350
45S -.035
.016
28-32
18436572
9°
650/
500 7
650/
500 7
8-400 Firebird
44S -.035
.016
28-32
18436572
9°
850/
600 7
650/
500 7
8-400 Firebird H.O.
44S -.035
.016
28-32
18436572
9°
850/
600 7
650/
500 7
Firebird Ram Air
44S -.035
.016
28-32
18436572
9°
1000/
650 7
650/
500 7
Pontiac 400
2 bar carb 
45S -.035
.016
28-32
18436572
9°
800/
500 7
600/
500 7
Pontiac 400
4 bar carb 
45S -.035
.016
28-32
18436572
9°
850/
650 7
600/
500 7
8-428
44S -.035
.016
28-32
18436572
9°
650/
500 7
650/
500 7
1969
 
6-250 1 bar carb
R44NS -.035
.016
31-34
153624
TDC
700/
500
600/
500D 7
6-250 4 bar carb
R44NS -.035
.016
31-34
153624
5°
850/
600 
600/
500D 7
8-350 2 bar carb
R45S -.035
.016
30
18436572
9°
850
650D 7
8-350 4 bar carb
R45S -.035
.016
30
18436572
9°
1000
650D 7
8-400 2 bar carb
R45S -.035
.016
30
18436572
9°
850
650D 7
8-400 4 bar carb
10
.016
30
18436572
9°
700
600D
8-400 Ram Air
10
.016
30
18436572
15°
1000/
650 
650/
500D 7
8-428
R44S -.035
.016
30
18436572
9°
1000
650D 7
1970
6-250 Std. trans 3
R46T -.035
.019
31-34
153624
TDC
750/
400
-
6-250 Auto  trans 3
R46T -.035
.019
31-34
153624
4°
-
600/
400D
8-350 2 bar carb
R46S -.035
.016
30
18436572
9°
800
650D
8-400 2 bar carb
R46S -.035
.016
30
18436572
9°
800
650D
8-400 4 bar carb
R45S -.035
.016
30
18436572
9°
950
650D
8-400 Ram Air
R44S -.035
.016
30
18436572
15°
1000/
650
750/
500D
8-455 
R45S -.035 11
.016
30
18436572
9°
950
650D
1971
22
6-250 3
R46TS -.035
.019
32.5
153624
4°
850/
550
650/
500D
8-307 Std. trans 3
R45TS -.035
.019
30
18436572
4°
550
-
8-307 Auto trans 3
R45TS -.035
.019
30
18436572
8°
-
550D
8-350 2 bar carb
R47S -.035
.016
30
18436572
12°
800
600D
8-400 2 bar carb
R47S -.035
.016
30
18436572
8°
-
600D
8-400 4 bar carb
R46S -.035
.016
30
18436572
12°
1000/
600
700D
V8-455 
R46S -.035
.016
30
18436572
12°
-
650D
V8-455 H.O.
R46S -.035
.016
30
18436572
12°
1000/
600
700D
1972
22
6-250 3
R46T -.035
.019
32.5
153624
4°
850/
450
650/
450D
8-307 Std. trans 3
R44T -.035
.016
30
18436572
4°
900/
450
-
8-307 Auto trans 3
R44T -.035
.016
30
18436572
8°
-
600/
450D
8-350
R46TS -.035
.016
30
18436572
8°
800
-
8-350
R46TS -.035
.016
30
18436572
10°
-
625D
8-400 2 bar carb
R46TS -.035
.016
30
18436572
10°
-
625D
8-400 4 bar carb
R45TS -.035
.016
30
18436572
10°
1000/
600
700/
500D
V8-455 2 bar carb
R45TS -.035
.016
30
18436572
10°
-
625D
V8-455 4 bar carb
R45TS -.035
.016
30
18436572
10°
-
650/
500D
V8-455 H.O.
Std. trans
R45TS -.035
.016
30
18436572
8°
1000/
600
-
V8-455 H.O.
Auto trans
R45TS -.035
.016
30
18436572
10°
-
700/
500D
1973
22
6-250 
R46T -.035
12
32.5
153624
6°
750/
450
600D
6-350 Std. trans
R46T -.040
.019
30
18436572
10°
900
/600
-
8-350 Auto trans
R46TS -.040
.016
30
18436572
12°
-
650D
8-400 2 bar carb
R46TS -.040
.016
30
18436572
13
-
650D
8-400 4 bar carb
R45TS -.040
.016
30
18436572
13
1000/
600
650D
8-455 
R45TS -.040
.016
30
18436572
13
1000
650D
8-455 S.D.
R44TS -.040
.016
30
18436572
13
1000/
600
750/
500D
1974
22
6-250 
R46T -.035
12
32.5
153624
6°
850
600D
8-350 2 bar carb
R46TS -.040
12
30
18436572
13
900
650D
8-350 2 bar carb 14
R46TS -.040
12
30
18436572
10°
-
625D
8-350 4 bar carb
R46TS -.040
12
30
18436572
13
1000
650D
8-350 4 bar carb 14
R46TS -.040
12
30
18436572
10°
-
625D
8-400 2 bar carb
R46TS -.040
12
30
18436572
13
-
650D
8-400 2 bar carb 14
R46TS -.040
12
30
18436572
10°
-
625D
8-400 4 bar carb
R45TS -.040
12
30
18436572
13
1000
650D
8-400 4 bar carb 14
R45TS -.040
12
30
18436572
10°
-
625D
8-455 
R45TS -.040
12
30
18436572
13
-
625D
8-455 14
R45TS -.040
12
30
18436572
10°
-
650D
8-455 SD
R44TS -.040
12
30
18436572
12°
1000
750D
1975
22
6-250 
R46TX -.060
-
-
153624
10°
800
650D
8-260 15
R46SX -.080
-
-
18436572
16°
750
650D
8-260 14,15
R46SX -.080
-
-
18436572
18°
750
650D
8-350 
R46TSX -.060
-
-
18436572
19
800
20
8-350 16
R45TSX -.060
-
-
18436572
12°
800
600D
8-400 2 bar carb
R46TSX -.060
-
-
18436572
16°
800
650D
8-400 2 bar carb 17
R45TSX -.060
-
-
18436572
16°
800
650D
8-400 4 bar carb 18
R45TSX -.060
-
-
18436572
21
800
650D
8-400 4 bar carb 14
R45TSX-.060
-
-
18436572
12°
800
650D
8-455 
R45TSX-.060
-
-
18436572
16°
800
650D
8-455 14
R45TSX-.060
-
-
18436572
10°
800
625D

1 - BTDC - Before top dead center

2 - D- Drive N- neutral

3 - SEE Chevrolet for service 
procedure

4 - If A/C, A/C  turned  to Full On 
position

5 - Turn adjusting screw in
Clockwise until engine misfires,
then turn screw out 1/2 turn
 
6 - With Air Injection reactor
emission system  (A.I.R)

7- With A/C off

8- Tempest with manual trans

9- 100 rpm higher with A/C

10- GTO uses R44S, all others R45S

11- Use R44s on Ram Air

TDC- Top dead center
12- New .019, used .016

13- Manual tran 10°, auto 12°

14- CA

15-SEE Oldsmobile for service 
procedure
16- Ventura only SEE Buick for
 service procedure  

ATC- After top center
17- All except Firebird, Grand Prix,
and CA

18- Firebird, Grand Prix except CA

19-  Manual tran 12°, auto 16°

20- 2 bar carb 600rpm, 
4 bar carb 650 rpm

21- Manual tran 12°, auto 10°

22- Exc Astre