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NASH

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
1946-48
"600" 6
.025
.020
35-38
153624
IGN
.015H
.015H
Ambassador
.025
.020
35-38
153624
IGN
.015H
.015H
1949
"600" 6
.030
.022
31-37
153624
IGN
.015H
.015H
Ambassador
.025
.022
31-37
153624
IGN
.015H
.015H
1950
Rambler
.030
.022
31-37
153624
TDC
.016C
.018C
Statesman
.030
.022
31-37
153624
TDC
.016C
.018C
Ambassador
.030
.022
31-37
153624
TDC
.012H
.016H
1951
Rambler
.030
.022
31-37
153624
TDC
.016C
.018C
Statesman
.030
.022
31-37
153624
TDC
.016C
.018C
Ambassador
.030
.022
31-37
153624
TDC
.012H
.016H
1952-54
Rambler
.030
.022
31-37
153624
3 
.016C
.018C
Statesman
.030
.022
31-37
153624
3 
.016C
.018C
Ambassador
.030
.022
31-37
153624
TDC
.012H
.016H
1955
Statesman
.030
.022
31
153624
3 
.016C
.018C
Ambassador 6
.030
.016
38-45
153624
3 
.012H
.016H
Ambassador V8
.035
.017
38
18436572 1
Zero
Zero
1956
Statesman 6
.030
.016
28-35
153624
.012H
.016H
Amb. Spec V8
.035
.016
26-33
18436572 1
Zero
Zero
Ambassador 6
.030
.020
39
153624
3
.012H
.016H
Ambassador V8
.035
.017
31
18436572 1
Zero
Zero
1957
Ambassador V8
.035
.016
30
18436572 1
Zero
Zero
1 - Cylinders numbering front to rear:
 Right bank 1357  left bank 2468              

3- After top dead center