MSD 8356 Chevy V8 Dual Pickup Distributor Installation - Manual (Page 4)

4 INSTALLATION INSTRUCTIONS
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Figure 6 Changing the Advance Stop Bushing.
SELECTING THE ADVANCE STOP BUSHING
Three 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. Do not over
tighten.
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. Do
not over tighten.
6. Install the drive gear and roll-pin.
Figure 6 Locking Out the Centrifugal Advance.
Figure 7 Locking Out the Advance.
Figure 5 Advance Stop Bushing Chart.
BUSHING SIZE APPROXIMATE
CRANKSHAFT
DEGREES
Red-Smallest 28
Silver 25
Blue 21
Black-Largest 18