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MSD Pro-Billet Small Diameter
ONLINE PRODUCT REGISTRATION: Register your MSD product online. Registering your product
will help if there is ever a warranty issue with your product and helps the MSD R&D team create
new products that you ask for! Go to www.msdperformance.com/registration.
Important:
Read these instructions before attempting the installation.
Parts Included:
1 - Pro-Billet Distributor
1 - Rotor, PN 8467
1 - Distributor Cap, Red PN 8431 or Black PN 84313
1 - Wire Retainer
2 - 1.5" Self Tapping Screws
2 - Panhead Phillips Screws
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 8531) is required for replacement due to the .500"
diameter shaft.
TIMING FUNCTIONS
Before continuing with the installation, here are a few definitions you should be aware of:
Initial Timing: This is the base timing (also referred to as idle timing) of the engine before the
centrifugal advance begins.
Centrifugal Advance: The centrifugal (or mechanical) advance mechanism is made up of weights,
springs, advance cams, and an advance stop bushing. The amount and rate of advance that your
distributor is capable of is determined by the centrifugal timing. If you ever wish to lock out the
centrifugal advance, refer to the centrifugal advance section.
Total Timing: This is the total of the initial timing plus the centrifugal advance added together.
Example: 10° Initial + 25° centrifugal = 35° Total Timing. (When checking Total timing, disconnect
the vacuum canister and plug the vacuum source.)
Note: MSD Distributors are supplied with the heavy (slow) advance springs installed. This is to prevent
detonation in certain applications. Review the information on pages 2-4 to determine the best
advance curve for your application.
M S D
•
W W W . M S D P E R F O R M A N C E . C O M
Chevrolet V8 Distributor
PN 8570/85703
1 - Advance Kit
1 - Gasket
1 - Tube of Gear Lubricant
2 - O-Rings
•
( 9 1 5 )
8 5 7 - 5 2 0 0
•
F A X
( 9 1 5 )
8 5 7 - 3 3 4 4
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Table of Contents
Related Manuals for MSD 8570
Summary of Contents for MSD 8570
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Page 1: Parts Included
PN 8570/85703 ONLINE PRODUCT REGISTRATION: Register your MSD product online. Registering your product will help if there is ever a warranty issue with your product and helps the MSD R&D team create new products that you ask for! Go to www.msdperformance.com/registration. -
Page 2: Installation Instructions
The rate, or how quick the advance comes in is determined by the type of springs which are installed on the distributor. The MSD distributors are equipped with two Heavy Silver springs installed. These will give you the slowest advance curve possible (Figure 2). The parts kit contains two additional sets of springs which can be used to match the advance curve to your particular application. - Page 3 INSTALLATION INSTRUCTIONS To change the springs, remove the cap and rotor and use needlenose pliers to remove the springs. To change the springs, remove the cap and rotor and use needlenose pliers to remove the springs. Be sure the new springs seat in the groove on the pin. Be sure the new springs seat in the groove on the pin.
- Page 4 INSTALLATION INSTRUCTIONS SELECTING THE ADVANCE STOP BUSH- BUSHING SIZE APPROXIMATE CRANKSHAFT Five different advance stop bushings are supplied DEGREES Red-Smallest in the distributor kit. The distributor comes with a Silver Blue (21°) bushing already installed. If a different Green amount of centrifugal advance is desired, follow the Blue next procedure to change the bushings.
- Page 5 INSTALLATION INSTRUCTIONS 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.
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Page 6: Installing The Distributor
INSTALLATION INSTRUCTIONS INSTALLING THE DISTRIBUTOR 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. - Page 7 GREEN PN 8860 VIOLET HARNESS Figure 12 Wiring to an MSD 6-Series Ignition Control. Figure 13 Wiring to an MSD 7-Series Ignition Control. M S D • W W W . M S D P E R F O R M A N C E . C O M •...
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Page 8: Limited Warranty
*Intended normal use means that this item is being used as was originally intended and for the original application as sold by MSD. Any modifications to this item or if it is used on an application other than what MSD markets the product, the warranty will be void.
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