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CADILLAC

 

1965-75 Tune-up Specifications

 
Year
Engine 
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
V8-429
44 -.035
5
30
18726543
-
480D 6
1966
Standard car
44 -.035
5
30
18726543
-
480D 4
With A.I.R
44 -.035
5
30
18726543
-
550D 4
With
A.I.R & A/C
44 -.035
5
30
18726543
-
550D 4
1967
Without
A.I.R
44 -.035
5 30 18726543
-
480D 4
With A.I.R
44 -.035
5 30 18726543
-
550D 4
With
A.I.R & A/C
44 -.035
5
30
18726543
-
550D 4
1968
ALL
44N -.035
5
30 15634278
-
550D 4
1969
ALL
R44N-.035
5
30
15634278
-
550D 4
1970
ALL
R46N-.035
5
30
15634278
7.5°
-
600D 4
1971-72
ALL
R46N-.035
5
30
15634278
-
600D 4
1973
ALL
R46N-.035
5
30
15634278
-
600D 4
1974
ALL
R45NS-.035
5
30
15634278
10°
-
600D 4
1975
ALL
R45NSX-.060
-
-
-
-
600D
 
1- BTDC - Before top dead center
2- D- Drive      N- neutral



4 - When making adjustments, air conditioner
must be turned off (if equipped).
Also, hose must be   disconnected at vacuum
release   cylinder.
The hot idle compensator must be closed;
this can be done by
pressing finger or eraser end  of pencil 
on compensator. 

On 1968  units, compensator pin is just in
front primary throttle bores;
 
On  1967 compensator is located in air  horn
vent stack just to left rear
of secondary metering rod hanger;
 
On 1966 units brass valve located  in 
secondary side of unit. 



On 1966 models, to set stator blades for 
proper performance, remove pink  wire

from contact fitting on  transmission 
downshift switch and  connect to 
white wire fitting with 
alligator clip; this will activate  stator switch.
5 - Turn adjusting screw in Clockwise until 
engine misfires, then turn screw out 1/2 turn



6 - If equipped, adjust idle speed 
with air conditioner turned on. 
Also, the vacuum released parking 
brake hose from switch to engine 
must be disconnected and opening
taped closed to prevent any air leak