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DeSoto

1946-61 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 
All 
.030 
.020
35-38
153624 
"0"
.008H
.010H
1949-50 
All 
.035
.020
35-38
153624
1
.008H
.010H
1951    
All
.035 
.020
35-38
153624
1
.008H
.010H
1952-53
Six 
.035 
.020
35-38
153624
1
.008H
.010H
V8
.035 
.018
2
18436572 3
4
Zero
Zero
1954    
Six
.035
.020
39
153624
5
.008H
.010H
V8
.035
.018
2
18436572  3
4
Zero
Zero
1955  
2 Bar. Carb.
.035
.017
2
18436572  3
Zero
Zero
4 Bar. Carb. 
.035
.017
34
18436572  3
10°
Zero
Zero
1956
V8-330  2 Bar. Carb.
.035 
.017
27-32
18436572  3
Zero
Zero
V8-330 4 Bar. Carb. 
.035
.017
27-32
18436572  3
Zero
Zero
V8-341 
.035
.017
27-32
18436572  3
Zero Zero
1957
V8-325
.035
.017
27-32
18436572  3
Zero
Zero
V8-341
.035
.017
27-32
18436572  3
Zero
Zero
1958	
V8-350, 361 1 Carb.
.035
.017
27-32
18436572  3
.060-.210 11
V8-361 2 Carbs.
.035
.017
10
18436572  3
.060-.210 11
1959 
V8-361, 383 1 Carb.
.035
.017
27-32
18436572  3
10°
.060-.210 11
V8-383 Two Carbs.
.035 
.017
13
18436572  3
10°
.060-.210 11
1960  
V8-361, 383
.035
.017
27-32
18436572  3
10°
.060-.210 11
1961 
V8-361
.035 
.017
27-32
18436572  3
10°
.060-.210 11
1- Third line after "0" mark.

2- Each set of points 26-28°, total dwell both
sets 32-36°.

3- Cylinder numbering (front to rear): Left
bank 1-3-5-7  Right bank 2-4-6-8.
4- Fourth line after "0" mark. 

5- Second line after "0" mark.

10- Each set of points 29-32°; total 
dwell both sets 36-39°.
11- With lifter collapsed.

13- Each set of points 27-32°; total
 dwelt bothsets 34-40°.