CORVETTE
1953-64 Tune-up Specifications
| Year | Engine Car Model | Spark Plug Gap | Point Gap | Dwell Angle | Firing Order | Ignition Timing (BTDC or Mark) | Valve Lash | |
| Intake | Exhaust | |||||||
| 1953-54 | All | .035 | .015 | 41-47 | 153624 | Ball
Flywheel |
.010H | .02H |
| 1955 | 6 | .035 | .016 | 41-47 | 153624 | Ball
Flywheel |
.006H | .013H |
| V8 | .035 | .019 | 1 |
18436572
2 |
4° | .008H | .018H | |
| 1956 | All | .035 | .019 | 1 |
18436572
2 |
4° | .008H | .018H |
| 1957 | 220
hp |
.035 | .019 | 1 |
18436572
2 |
4° | 1 Turn
3 |
|
| 245
hp |
.035 | .019 | 1 |
18436572
2 |
12° | 1 Turn
3 |
||
| 250
hp |
.035 | .019 | 1 |
18436572
2 |
13° | 1 Turn
3 |
||
| 270
hp |
.035 | .019 | 1 |
18436572
2 |
12° | 1 Turn
3 |
||
| 283
hp |
.035 | .019 | 1 |
18436572
2 |
6° | .012H | .018H | |
| 1958-59 | 230
hp |
.035 | 4 |
30 | 18436572
2 |
4° | Zero | Zero |
| 245
hp |
.035 | 4 |
30 | 18436572
2 |
4° | 1 Turn
3 |
||
| 250
hp |
.035 | 5 |
1 |
18436572
2 |
4° | 1 Turn
3 |
||
| 270
hp |
.035 | 5 |
1 |
18436572
2 |
7° | .012H | .018H | |
| 290
hp |
.035 | 5 |
1 |
18436572
2 |
14° | .012H | .018H | |
| 1960-61 | 230
hp |
.035 | 4 |
30 | 18436572
2 |
4° | 1 Turn
3 |
|
| 245
hp |
.035 | 4 |
30 | 18436572
2 |
12° | 1 Turn
3 |
||
| 270
hp |
.035 | 5 |
1 |
18436572
2 |
12° | .012H | .018H | |
| 275
hp |
.035 | 5 |
1 |
18436572
2 |
8° | .012H | .018H | |
| 315
hp |
.035 | 5 |
1 |
18436572
2 |
18° | .012H | .018H | |
| 1962 | 250
hp |
.035 | 4 |
30 | 18436572
2 |
4° | 1 Turn
3 |
|
| 300
hp |
.035 | 4 |
30 | 18436572
2 |
8° | 1 Turn
3 |
||
| 340
hp |
.035 | 5 |
1 |
18436572
2 |
10° | .008H | .018H | |
| 360
hp |
.035 | 5 |
1 |
18436572
2 |
10° | .008H | .018H | |
| 1963 | 250
hp |
.035 | 5 |
30 | 18436572
2 |
4° | 1 Turn
3 |
|
| 300
hp |
.035 | 5 |
30 | 18436572
2 |
8° | 1 Turn
3 |
||
| 340
hp |
.035 | 5 |
30 | 18436572
2 |
10° | .008H | .018H | |
| 360
hp |
.035 | 5 |
30 | 18436572
2 |
10° | .008H | .018H | |
| 1964 | 250
hp |
.035 | 5 |
30 | 18436572
2 |
4° | 1 Turn
3 |
|
| 300
hp |
.035 | 5 |
30 | 18436572
2 |
8° | 1 Turn
3 |
||
| 365
hp |
.035 | 5 |
30 | 18436572
2 |
10° | .030H | .030H | |
| 365
hp |
.035 | 5 |
30 | 18436572
2 |
10° | .030H | .030H | |
1 - Each set of points 28-30° , total dwell both sets 33-35°
2 - Cylinders numbering front to rear: Right bank 2468 left bank 1357
3 - Turn rocker adjusting screw clockwise until all lash is removed. Then addition turns specified.
4 - New points .018" , used .015"
5-New points .019" , used .016"