83613 Datasheet, PDF (4/8 Pages) Mallory performance club – MSD Pro-Billet Chevrolet V8 Distributor

4
INSTALLATION INSTRUCTIONS
SELECTING THE ADVANCE STOP BUSH-
ING
Five different advance stop bushings are supplied
in the distributor kit. The distributor comes with a
Blue (21°) bushing already installed. If a different
amount of centrifugal advance is desired, follow the
next procedure to change the bushings. The chart
in Figure 5 gives the size and approximate degrees
for the corresponding bushings.
CHANGING THE ADVANCE STOP
BUSHINGS
1. Remove the distributor cap and rotor.
2. Remove the locknut and washer on the bottom of
the advance assembly (Figure 6).
3. Remove the bushing and install the new one.
Install the washer and locknut.
BUSHING SIZE
Red-Smallest
Silver
Green
Blue
Purple
Black-Largest
APPROXIMATE
CRANKSHAFT
DEGREES
28
25
23
21
19
18
Figure 5 Advance Stop Bushing Chart.
LOCKING OUT THE ­CENTRIFUGAL
ADVANCE
1. Remove the advance components including the
springs, weights and the advance stop bushing
from the advance assembly.
2. Remove the roll-pin from the drive gear and remove
the gear from the shaft.
3. Slide the shaft two inches out of the housing.
4. Rotate the shaft 180° and insert the advance stop
bushing pin into the small hole on the advance
plate (Figure 7).
5. Install the locknut and washer to the advance stop
bushing pin. This locks the advance in place.
6. Install the drive gear and roll-pin.
Note: If you want to lock out the vacuum advance
of the PN 8361/83613 Distributor, see page 6.
   
Figure 6 Changing the Advance Stop Bushing.
Figure 6 Locking Out the Centrifugal Advance.
Figure 7 Locking Out the Advance.
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