FORD * MERCURY
1946-54 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 | |||||||
| 1946 | 6 | .030 | .015 | 36 | 153624 | 1
| .014C | .014C |
| V8 | .030 | .015 | 36
2 |
15486372
3 |
1
| .012C | .014C | |
| 1947 | 6 | .030 | .015 | 36 | 153624 | 1
| .014C | .014C |
| V8 | .030 | .015 | 36
2 |
15486372
3 |
1
| .012C | .014C | |
| 1948 | 6 | .030 | .025 | 35 | 153624 | Groove
Pulley |
.014C | .014C |
| V8 | .030 | .015 | 36
2 |
15486372
3 |
1
| .012C | .014C | |
| 1949 | 6 | .030 | .025 | 36 | 153624 | Groove
Pulley |
.010C | .014C |
| V8 | .030 | .015 | 38 | 15486372
3 |
Groove
Pulley |
4 |
4 |
|
| 1950-51 | 6 | .030 | .025 | 36 | 153624 | Groove
Pulley |
.010C | .014C |
| V8 | .030 | .015 | 28 | 15486372
3 |
Groove
Pulley |
.014C | .018C | |
| 1952-53 | 6 | .035 | .025 | 36 | 153624 | Groove
Pulley |
.015H | .015H |
| V8 | .030 | .015 | 28 | 15486372
3 |
Groove
Pulley |
.014C | .018C | |
| 1954 | 6 | .035 | .025 | 36 | 153624 | 3° | .015H | .015H |
| V8
Std. tran |
.035 | .015 | 28 | 15486372
3 |
3°
Pulley |
.019H | .019H | |
| V8
Fordomatic |
.035 | .015 | 28 | 15486372
3 |
6°
Pulley |
.019H | .019H | |
| 1955 | 6 | .034 | .025 | 35-38 | 153624 | 3° | .015H | .019H |
| V8
Std. tran |
.034 | .015 | 26-28 | 15486372
3 |
3° | .019H | .019H | |
| V8
Fordomatic |
.034 | .015 | 26-28 | 15486372
3 |
6° | .019H | .019H | |
| 1956 | 6
Std. tran |
.034 | .025 | 35-38 | 153624 | 4° | .019H | .019H |
| 6
Fordomatic |
.034 | .025 | 35-38 | 153624 | 6° | .019H | .019H | |
| V8
Std. tran |
.034 | .015 | 26-28 | 15486372
3 |
3° | .019H | .019H | |
| V8
Fordomatic |
.034 | .015 | 26-28 | 15486372
3 |
6° | .019H | .019H | |
| 1957 | 6
Std. tran |
.034 | .025 | 35-38 | 153624 | 4° | .019H | .019H |
| 6
Fordomatic |
.034 | .025 | 35-38 | 15486372
3 |
6° | .019H | .019H | |
| V8
Std. tran |
.034 | .015 | 26-28 | 15486372
3 |
3° | .019H | .019H | |
| V8
Fordomatic |
.034 | .015 | 26-28 | 15486372
3 |
6° | .019H | .019H | |
| 1958 | 6-223
Std. tran |
.034 | .025 | 35-38 | 153624 | 4° | .019H | .019H |
| 6-223
Auto tran |
.034 | .025 | 35-38 | 153624 | 6° | .019H | .019H | |
| V8-292
Std. tran |
.034 | .015 | 26-28 | 15486372
3 |
3° | .019H | .019H | |
| V8-292
Auto tran |
.034 | .015 | 26-28 | 15486372
3 |
6° | .019H | .019H | |
| V8-332
Std. tran |
.034 | .015 | 26-28 | 15426378
3 |
3° | .026H | .026H | |
| V8-332
Auto tran |
.034 | .015 | 26-28 | 15426378
3 |
6° | .026H | .026H | |
| 1959 | 6-223
Std. tran |
.034 | .025 | 37-42 | 153624 | 6° | .019H | .019H |
| 6-223
Auto tran |
.034 | .025 | 37-42 | 153624 | 12° | .019H | .019H | |
| V8-292
Std. tran |
.034 | .017 | 26-31 | 15486372
3 |
5° | .019H | .019H | |
| V8-292
Auto tran |
.034 | .017 | 26-31 | 15486372
3 |
12° | .019H | .019H | |
| V8-332
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
5° | .062-.1875
5 |
||
| V8-332
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
8° | .062-.1875
5 |
||
| V8-352
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
5° | .062-.1875
5 |
||
| V8-352
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
8° | .062-.1875
5 |
||
| 1960 | 6-223
Std. tran |
.034 | .025 | 37-42 | 153624 | 6° | .019H | .019H |
| 6-223
Auto tran |
.034 | .025 | 37-42 | 153624 | 10° | .019H | .019H | |
| V8-292
Std. tran |
.034 | .017 | 26-31 | 15486372
3 |
5° | .019H | .019H | |
| V8-292
Auto tran |
.034 | .017 | 26-31 | 15486372
3 |
12° | .019H | .019H | |
| V8-352
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
5° | .078-.218
5 |
||
| V8-352
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
8° | .078-.218
5 |
||
| 1961 | 6-223
Std. tran |
.034 | .025 | 37-42 | 153624 | 6° | .019H | .019H |
| 6-223
Auto tran |
.034 | .025 | 37-42 | 153624 | 12° | .019H | .019H | |
| V8-292
Std. tran |
.034 | .017 | 26-31 | 15486372
3 |
5° | .019H | .019H | |
| V8-292
Auto tran |
.034 | .017 | 26-31 | 15486372
3 |
12° | .019H | .019H | |
| V8-350,390
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
5° | .078-.218
5 |
||
| V8-350,390
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
8° | .078-.218
5 |
||
| V8-390
375 hp |
.034 | .020 | 26-31 | 15426378
3 |
14° | .020H | .020H | |
| V8-390
401 hp |
.034 | .020 | 26-31 | 15426378
3 |
14° | .020H | .020H | |
| 1962 | 6-223
Std. tran |
.034 | .025 | 37-42 | 153624 | 6° | .025H | .025H |
| 6-223
Auto tran |
.034 | .025 | 37-42 | 153624 | 12° | .025H | .025H | |
| V8-292
Std. tran |
.034 | .017 | 26-31 | 15486372
3 |
5° | .019H | .019H | |
| V8-292
Auto tran |
.034 | .017 | 26-31 | 15486372
3 |
12° | .019H | .019H | |
| V8-350,390
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
5° | .078-.218
5 |
||
| V8-350,390
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
8° | .078-.218
5 |
||
| V8-390
375 hp |
.034 | .020 | 26-31 | 15426378
3 |
5° | .025H | .025H | |
| V8-390
401 hp |
.034 | .020 | 26-31 | 15426378
3 |
5° | .025H | .025H | |
| V8-406
385 hp |
.034 | .020 | 26-31 | 15426378
3 |
8° | .025H | .025H | |
| V8-406
405 hp |
.034 | .020 | 26-31 | 15426378
3 |
8° | .025H | .025H | |
| 1963 | 6-223
Std. tran |
.034 | .025 | 37-42 | 153624 | 4° | .025H
8 |
.025H
8 |
| 6-223
Auto tran |
.034 | .025 | 37-42 | 153624 | 10° | .025H
8 |
.025H
8 |
|
| V8-260
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
6° | 3/4 Turn
9 |
||
| V8-260
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
10° | 3/4 Turn
9 |
||
| V8-289
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
6° | 3/4 Turn
9 |
||
| V8-289
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
10° | 3/4 Turn
9 |
||
| V8-352
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
5° | .083-.183
10 |
||
| V8-352
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
8° | .083-.183
10 |
||
| V8-390
Std. tran 6 |
.034 | .017 | 26-31 | 15426378
3 |
5° | .083-.183
10 |
||
| V8-390
Auto tran 6 |
.034 | .017 | 26-31 | 15426378
3 |
8° | .083-.183
10 |
||
| V8-390
7 |
.034 | .017 | 26-31 | 15426378
3 |
6° | .083-.183
10 |
||
| V8-390
330 hp |
.034 | .017 | 26-31 | 15426378
3 |
10° | .025H | .025H | |
| V8-406
427 hp |
.035 | .017 | 26-31 | 15426378
3 |
5° | .025H | .025H | |
| V8-406
427 hp 2 Carbs |
.034 | .017 | 26-31 | 15426378
3 |
8° | .025H | .025H | |
| 1964 | 6-223
Std. tran |
.034 | .025 | 37-42 | 153624 | 4° | .025H
8 |
.025H
8 |
| 6-223
Auto tran |
.034 | .025 | 37-42 | 153624 | 10° | .025H
8 |
.025H
8 |
|
| V8-289
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
6° | 3/4 Turn
9 |
||
| V8-289
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
10° | 3/4 Turn
9 |
||
| V8-352
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
6° | 11 |
||
| V8-352
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
10° | 11 |
||
| V8-390
Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
4° | 11 |
||
| V8-390
Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
6° | 11 |
||
| V8-390
hp Std. tran |
.034 | .017 | 26-31 | 15426378
3 |
4° | .025H | .025H | |
| V8-390
hp Auto tran |
.034 | .017 | 26-31 | 15426378
3 |
6° | .025H | .025H | |
| V8-427 | .034 | .017 | 26-31 | 15426378
3 |
8° | .025H | .025H | |
1- No timing marks. Spark my be adjusted by the vacuum brake set screw on the distributor Housing.
2- Total dwell for both breakers
3- Cylinder numbering front to rear: Left 5678 Right 1234
4- Up to serial # 8BA-622468: intake .012C, exhaust .014C. Later cars, intake .014C, exhaust .018C
5- obtained at the valve stem with lifter collapsed
6- 4 Barrel Carb
7- 2 barrel Carb
8-"Silent Lash"- obtained at the valve stem with eccentric spring compressed
9- Tighten rocker arm adjust screw to eliminate all push rod end clearance, then tighten screw number of turns listed.
10- obtained at the valve stem with lifter collapsed
11- Before 11-18-63 (.083-.183), from 11-18-63 (.050-.150) see note 10