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                                       Base Spark Table (A9L)

The following table is based on a stock '87-'93 5- speed A9L spark table, for Engine Load vs Engine
RPM.  If you have a way to observe and modify your timing (ie: PMS), this will let you compare or
model the spark table to your new set-up.  Just remember that all engines are different.  What may
work on the stock 5.0L may not necessary work with your heads, cam, and intake.  You may find that
adjusting the spark table is needed to work with your combination.  
Base Spark Table (A9L 87-93 5-Speed)
RPM
Load
 
500
700
900
1100
1300
1500
2000
2500
3000
4000
.750
11.50
11.50
13.00
13.00
15.50
18.25
23.50
27.25
27.25
27.3
.600
11.50
14.25
14.25
14.25
17.00
19.5
27.25
27.25
27.25
27.25
.500
17.25
17.25
18.50
18.50
20.75
23.00
26.50
31.25
31.25
31.25
.400
23.00
24.25
28.75
32.25
35.75
37.00
38.00
39.00
32.25
32.25
.300
28.75
30.00
32.25
33.25
37.00
37.00
43.75
46.00
32.25
32.25
.230
28.00
28.00
33.00
41.50
41.50
42.75
43.75
43.75
32.25
32.25
.150
28.00
28.00
28.00
31.25
33.25
34.25
34.25
34.25
28.25
28.25
.050
28.00
28.00
28.00
27.25
29.00
30.00
30.00
30.00
30.00
30.00