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THUNDERBIRD
1955-64 Tune-up Specifications 
Year
 
Engine or 
Car Model
 
Spark 
Plug Gap
 
Point
Gap
 
Dwell
Angle
 
Firing
Order
 
Ignition Timing 
(BTDC or Mark)
 
Valve Lash
 
Intake
 
Exhaust
 
1955-56
 
All
 .034 .015 26-28 
15486372  1
 
2
 
.019H
 .019H 
1957
 
All
 .034 .015 26-28 15486372 1 
2
 .019H .019H 
1958
 
All
 .034 .015 
26-28
 15426378 1 2 .062- .1875 3 
1959
 
All
 .034 .017 
26-31
 15426378 1 4 5 
1960
 
All
 .034 .017 
26-31
 15426378 1 4 .078-.218 3 
1961
 
All
 .034 .017 
26-31
 15426378 1 8° 
.078-.218 3
 
1962
 
V8 390
 .034 
.017
 
26-31
 
15426378  1
 
6°
 
.100-.200 3
 
V8 429
 
.035
 
.017
 
26-31
 
15426378  1
 
6°
 
.075-.175 3
 
1963
 
V8 390
 .034 
.017
 
26-31
 15426378 1 6° 
.083- .183 3
 
1964
 
V8 390
 .034 .017 6 
26-31 7
 15426378 1 6° 
8
 
1 - Cylinder numbering (front to rear): Left
bank 5678, Right bank 1234 

2 - Standard transmission 3° , Fordomatic 6°

3 - Clearance is obtain at valve stem with
lifter collapsed
 
4 - Standard transmission 5°,  
Auto transmission 8°

5 - V8 352 (.078-.218 3 )
V8 430 (.126-.226 3)

6 - With transistor ignition .020


7 - With transistor ignition 22-24°

8 - Engines built prior Nov 18, 1963 (.083-.183 3)
Engines built from Nov 18, 1963 (.050-.150 3)