PN85705 Datasheet, PDF (1/4 Pages) Mallory performance club – MSD Pro-Billet Chevrolet V8 Distributor

MSD Pro-Billet
Chevrolet V8 Distributor
PN 85705
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Important:  Read these instructions before attempting the installation.
Parts Included:
1 - Pro-Billet Distributor
1 - Rotor, PN 8423
1 - Distributor Cap, PN 84083
1 - Wire Retainer
2 - 1.5" Self Tapping Screws
2 - Panhead Phillips Screws
1 - Gasket
1 - Tube of Gear Lubricant
2 - O-Rings
1 - Female Weatherpak Connector
1 - Slip Collar, PN 8539
WARNING: Before installing the MSD Distributor, disconnect the battery cables. When discon-
necting the battery cables, always remove the Negative (-) cable first and install it
last.
Note: The terminals of this Distributor require spark plug style terminals. You may need to change
the terminals and boots of your wires. MSD offers two kits, PN 8849 or PN 8848 that are supplied
with nine boots and terminals.
Note: If the gear is ever replaced, MSD Gear (PN 8472) is required for replacement due to the .500"
diameter shaft.
Note: Weatherpak connector will need to be installed on MSD unit magnetic pickup side.
ADJUSTING THE SLIP COLLAR
Before installing the Pro-Billet Distributor, the slip collar adjustment must be set, follow this procedure.
1. Install the gasket to the housing then 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 position
and tighten it.
CHECKING GEAR MESH
It is recommended to check for proper gear mesh between the cam gear and distributor gear. To
do this, coat the distributor gear with moly grease and install the distributor. Next, crank the engine
over several times. Before pulling the distributor out, make sure the rotor is in the position that lines
up with the original removal mark. Then pull the distributor out and inspect the gear pattern shown
on the grease. The proper mesh will leave an even pattern in the middle of the gear. Adjust the slip
collar to obtain the correct mesh.
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