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HUDSON
1946-57 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
 
1946-47
 
6
 
.032
 
.020
 
35-38
 
153624 
1   Flywheel
 
.010H
 
.012H
 
8
 
.032
 
.017
 
27-30
 
16258374
 
TDC   Flywheel
 
.006H
 
.008H
 
1948-49
 
6
 
.032
 
.020
 
35-38
 
153624
 
UDC 1-6  Flywheel
 
.010H
 
.012H
 
8
 
.032
 
.017
 
27-30
 
16258374
 
UDC 1-8  Flywheel
 
.006H
 
.008H
 
1950-52
 
6
 
.032
 
.020
 
35-38
 
153624
 
UDC 1-6  Flywheel
 
.008H
 
.010H
 
8
 
.032
 
.017
 
27-30
 
16258374
 
UDC 1-8  Flywheel
 
.008H
 
.010H
 
1953-54
 
Jets
 
.032
 
.020
 
35-38
 
153624
 
2
 
.010H
 
.012H
 
Wasp, Hornet
 
.032
 
.020
 
39
 
153624
 
UDC 1-6  Flywheel
 
.008H
 
.010H
 
1955
 
Wasp
 
.032
 
.020
 
39
 
153624
 
Line
 
.010C
 
.014C
 
Hornet 6
 
.032
 
.020
 
39
 
153624
 
UDC 1-6  Flywheel
 
.010C
 
.014C
 
Hornet 8 
.032
 
.017
 
39
 
18436572  4
 
5°
 
Zero
 
Zero
 
1956
 
Wasp
 
.032
 
.020
 
39
 
153624
 
Line
 
.010C
 
.014C
 
Hornet 6
 
.030
 
.020
 
39
 
153624
 
UDC 1-6  Flywheel
 
Zero
 
Zero
 
Hornet 8
 
.035
 
.017
 
6
 
18436572  4
 
5°
 
Zero
 
Zero
 
Special
 
.035
 
.016
 
26-33
 
18436572  4
 
5°
 
Zero
 
Zero
 
1957
 
All
 
.035
 
.016
 
28-32
 
18436572  4
 
5°
 
Zero
 
Zero
 
1- 1/2" before DC mark

2- Long line before "1 UDC" mark
 
4- Cylinder numbering (front to rear): Left
bank 1-3-5-7  Right bank 2-4-6-8.

6 - Dual breaker units 38° ,
single breaker 31°