Full Size Cad RWD V8-350 5.7L DSL (1984)
Diesel MFI Pump: Technical Service Bulletins
Diesel Engine - Dynamic Timing
Bulletin No. T 84-68
File In Group
6A
Number
60
Date
Apr. '84
SUBJECT:
DIESEL ENGINE DYNAMIC TIMING
MODELS AFFECTED: ALL MODELS EQUIPPED WITH A 4.3L OR 5.7L DIESEL
Timing specifications for the 5.7L and 4.3L diesel engines are based upon use of a luminosity timing method available from many suppliers, such as
Snap-On, Kent-Moore, Owatonna and Sun. Any other type of device that measures something other than luminosity (such as pressure impulse) will not
correlate with the specifications and should not be used.
The Kent-Moore dynamic timing meter has two pick-ups. One pick-up measures the pressure impulse in the injection pipe and the other pick-up
measures luminosity through a probe in the glow plug hole. When using this equipment, be sure to use the luminosity pick-up rather than the impulse
pick-up.
Timing specifications are located on the "vehicle emissions control information" label for 1983 and 1984 vehicles. Past model (1978-1982)
specifications are reprinted below from Serviceman Bulletin I-82-87 for your reference.
Low Altitude
High Altitude
Counties
Counties
Year
Engine
Timing
RPM
Timing
RPM
1978
5.7L
-4 1/2~
1200
-5 1/2~
1200
1979
5.7L
-4 1/2~
1200
-5 1/2~
1200
1980
5.7L
-4 1/2~
1200
-5 1/2~
1200
1981
5.7L
-4~
1200
-5~
1200
1982
5.7L Low Altitude
-4~
1250
-5~
1250
Emissions Package
5.7L High Altitude
-3~
1250
-4~
1250
Emissions Package