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 | 5° | - | 480D
6 |
| 1966 | Standard car | 44-.035 | 5 |
30 | 18726543 | 5° | - | 480D
4 |
| With A.I.R | 44-.035 | 5 |
30 | 18726543 | 5° | - | 550D
4 |
|
| With A.I.R
& A/C |
44-.035 | 5 |
30 | 18726543 | 5° | - | 550D
4 |
|
| 1967 | Without A.I.R | 44-.035 | 5 |
30 | 18726543 | 5° | - | 480D
4 |
| With A.I.R | 44-.035 | 5 |
30 | 18726543 | 5° | - | 550D
4 |
|
| With A.I.R
& A/C |
44-.035 | 5 |
30 | 18726543 | 5° | - | 550D
4 |
|
| 1968 | ALL | 44N-.035 | 5 |
30 | 15634278 | 5° | - | 550D
4 |
| 1969 | ALL | R44N-.035 | 5 |
30 | 15634278 | 5° | - | 550D
4 |
| 1970 | ALL | R46N-.035 | 5 |
30 | 15634278 | 7.5° | - | 600D
4 |
| 1971-72 | ALL | R46N-.035 | 5 |
30 | 15634278 | 8° | - | 600D
4 |
| 1973 | ALL | R46N-.035 | 5 |
30 | 15634278 | 8° | - | 600D
4 |
| 1974 | ALL | R45NS-.035 | 5 |
30 | 15634278 | 10° | - | 600D
4 |
| 1975 | ALL | R45NSX-.060 | - | - | - | 5° | - | 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