MSD Billet Crank Trigger Distributors PN 84697

A Crank Trigger must be used with this distributor. An MSD Billet Hold-Down Clamp, PN 8110, is recommended.
REMOVING THE DISTRIBUTOR
1. Remove the existing distributor cap without disconnecting any of the spark plug wires.
2. With the cap off, rotate the engine or until the rotor is aimed at a fixed point on the engine or firewall. Note this position by making a mark (Figure 1).
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. Loosen the distributor hold-down clamp and slide the clamp out of the way.
5. Lift the distributor out of the engine. Note that the rotor rotates as you lift the distributor out. This due to the helical cut gear and should be taken into consideration when installing a new distributor.
ADJUSTABLE SLIP COLLAR
The MSD PN 8558, Distributor features an adjustable slip collar. This collar provides an adjustment to accomodate variations in block height, modified intakes or heads. It is recommended to check the slip collar setting before installation. MSD offers a special tool, the 3-In-1 Distributor Set Up Tool, PN 8599, to make these adjustments accurately. If the tool is not available, follow this procedure.
1. Loosen the slip collar and insert the distributor into the engine until it bottoms out against the oil pump drive.
2. After it bottoms out, raise the distributor 0.010" - 0.030" then slide the slip collar down into the position and tighten it.

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