MSD 8365 GM HEI Billet Distributor Installation User Manual

Page 4

INSTALLATION INSTRUCTIONS

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• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4

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.

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 Distributor, see page 7.

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

Silver

Blue

Black-Largest

Figure 6 Changing the Advance Stop Bushing.