MSD 8464 Bushing & Spring Set, MSD Distributor Installation - Manual

Centrifugal Advance Kit
PN 8464
Parts Supplied
4 - Advance Bushings
6 - Advance Springs
Advance Springs: The rate, or how quick the advance comes in is determined by the type of springs
which are installed on the distributor. To change the springs, use needlenose pliers. Be sure that the
new spring seats in the groove on the pin.
Stop Bushings: The Stop Bushings are responsible for limiting the amount of advance. The chart
shows the amount of advance that will occur with each bushing. To change the bushing, remove the
lock nut and washer on the bottom of the advance assembly.
Note: Some applications may require removing the
distributor gear and shaft.
SPRING COMBINATION RATE OF ADVANCE FIGURE 4 (Page 2)
2- Heavy Silver SLOWEST A
1- Heavy Silver B
1- Light Blue
1-Heavy Silver C
1-Light Silver
2- Light Blue D
1- Light Silver E
1- Light Blue
2- Light Silver FASTEST F
Figure 3 Changing the Advance Stop Bushing.
Figure 1 Advance Stop Bushing Chart.
Figure 2 Advance Stop Bushing Chart.
BUSHING SIZE APPROXIMATE CRANKSHAFT
DEGREES
Red-Smallest 28
Silver 25
Blue 21
Black-Largest 18
M S D
• 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