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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