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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
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
Zero
Zero
Special
.035
.016
26-33
18436572  4
Zero
Zero
1957
All
.035
.016
28-32
18436572  4
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°