MSD 8566 Oldsmobile V8 350-455 Distributor Installation User Manual

Page 5

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INSTALLATION INSTRUCTIONS

5

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

1. Remove the existing distributor cap without 

disconnecting any of  the spark plug wires.

2. With the cap off, crank the engine until the 

rotor is aimed at a fixed point on the engine or 

firewall. Note this position by making a  mark 

(Figure 8).

3. Place the distributor cap back on and note 

which plug wire the rotor is pointing to. MARK 

THE SPARK PLUG WIRES and remove the 

distributor cap.

4. Disconnect the wiring from the distributor.

5. Loosen the distributor hold down clamp and 

slide the clamp out of the way.  

6. Lift the distributor out of the engine.  Note that 

the rotor rotates as you lift the distributor out. 

This is due to the helical cut gear and should 

be taken into consideration when installing the 

new distributor.

7. Install the O-ring and apply a liberal amount 

Figure 8 Marking the Rotor Location.

INSTALLING THE DISTRIBUTOR

of the supplied lubricant to the distributor gear.

8. Install the distributor making  sure that the rotor comes to rest pointing at the fixed mark. If the distributor 

will not fully seat with  the rotor pointing to the  marked position, you may need to rotate the oil pump 

shaft until the rotor lines up and the distributor fully seats. 

9. Position and tighten the hold down clamp onto the distributor.  

10. Install the distributor cap and spark plug wires one at a time to ensure correct location. A wire retainer is 

supplied to secure the wires in place. Align the mounting bosses and use the supplied 1.5" self-tapping 

Phillips screws to hold  the retainer in place.

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