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THUNDERBIRD

1965-75 Tune-up Specifications

Year
Engine or 
Car Model
Spark Plug
Type (A) 
- Gap
Point
Gap
Dwell
Angle
Firing
Order
Ignition Timing 
(BTDC or Mark)
1
Hot Idle
Std.
Tran
Auto
Tran 2
1965
Conventional Ign.
BF-42/.034
.017 
26-31
15426378
6
-
485D 8
Transistor Ign.
BF-42/.034
.020
22-24
15426378
6
-
485D 8
1966
Std. Ignition 3
BF-42/.034
.017
26-31
15426378
10° 6
575D 8
475D 8
Std. Ignition 4
BF-42/.034
.017
26-31
15426378
6
610D 8
525D 8
Transistor Ign. 3
BF-42/.034
.020
22-24
15426378
10° 6
575D 8
475D 8
Transistor Ign. 4
BF-42/.034
.020
22-24
15426378
6
610D 8
525D 8
1967
Standard 3
BF-32/.034
.017
26-31 15426378
10° 6
575D 8
475D 8
With Thermactor 4
BF-32/.034
.017
26-31
15426378
6
625D 8
550D 8
1968
8-390
BF-42/.034
.017
26-31
15426378
6
-
550D 5
1968-69
8-429
BF-42/.034
.017
26-31
15426378
6
-
550D 5
1970-71
8-429
BRF-42/.034
.017
26-31
15426378
-
600D 9
1972
8-400 
ARF-42/.034
.017
26-30
13726548
10
-
625D 9
8-429
BRF-42/.034
.017
26-30
15426378
6°
-
600D 9
8-460
BRF-42/.034
.017
26-30
15426378
12
-
600D 9
1973
8-429
ARF-42/.034
.017
26-30
15426378
10°
-
600D 9
8-460
ARF-42/.034
.017
26-30
15426378
14°
-
600D 9
1974
V8-460
ARF-52/11
13
-
15426378
14°
-
650D 14
1975
V8-460
ARF-52/11
13
-
15426378
14°
-
650D
A - Autolite

1- BTDC - Before top dead center

2- D- Drive      N- neutral 

3 - Without Thermactor system

4-With Thermactor 

5- With headlights on and A/C  on.
6- Whenever idle speed or
ignition timing is to be adjusted, 
vacuum line to brake release 
mechanism must be disconnected
and plugged to prevent parking
brake from releasing when 
selector is moved to drive.

7- Built after 12-31-1971  14°

8-  A/C turned to "Full on" position
9- Headlamps on hi-beam, A/C off

10- Exc. CA 8° BTDC, CA 6° BTDC

11- Exc. CA .054 , CA .044

12- Exc. CA 10° BTDC, CA 6° BTDC

13- Breakerless distributor

14- Lights and A/C off