Msd 8570 Chevy Pro-Billet Small Diameter V8 Distributo- User Manual
Msd 8570 Chevy Pro-Billet Small Diameter V8 Distributo– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – CHOOSING AN ADVANCE CURVE; FACTOR; Figure 1 Ignition Timing Factors.; TIPS ON SELECTING AN ADVANCE CURVE
- Page 3 – Figure 2 The Factory Equipped Curve.; Timing Curve From Factory; CENTRIFUGAL ADVANCE CURVE; SELECTING THE ADVANCE; Figure 4 Advance Curves.
- Page 4 – Figure 6 Changing the Advance Stop Bushing.; BUSHING SIZE; Silver
- Page 5 – ADJUSTING THE SLIP COLLAR; until it bottoms out against the oil pump drive.; CHECKING GEAR MESH; collar to obtain the correct mesh.; Checking the Oil Pump to Distributor Shaft Overlap; Figure 8 Measuring Oil Pump Shaft Overlap.
- Page 6 – only be used if the block has been; Figure 9 Marking the Rotor Location.; INSTALLING THE DISTRIBUTOR; Figure 10 Modified Block for use with O-Rings.
- Page 7 – Figure 12 Wiring to an MSD 6-Series Ignition Control.; when the engine is cranking or running.
- Page 8 – Figure 14 Wiring with an MSD 7-Series Ignition and Timing Control.; Note: MSD 6 and 7 Series Ignitions; share the same color wiring.; or consequential damages.; Service; When returning MSD components for warranty service,; Proof of Purchase must be supplied for verification. After; All returns must have a Return Material Authorization (RMA) number; issued to them before; M S D
Important:
Read these instructions before attempting the installation.
P a r t s I n c l u d e d :
1 - Pro-Billet Distributor
1 - Rotor, PN 8467
1 - Distributor Cap, PN 8431
1 - Wire Retainer
2 - 1.5" Self Tapping Screws
2 - Panhead Phillips Screws
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.
1 - Advance Kit
1 - Gasket
1 - Tube of Gear Lubricant
2 - O-Rings
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.
MSD Pro-Billet Small Diameter
Chevrolet V8 Distributor
PN 8570
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
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Summary
2 INSTALLATION INSTRUCTIONS 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 CHOOSING AN ADVANCE CURVE The function of the advance curve is to match the ignition timing to the burning rate of the fuel and speed (rpm)...
INSTALLATION INSTRUCTIONS 3 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 Figure 2 The Factory Equipped Curve. Timing Curve From Factory SPRING COMBINATION RATE OF ADVANCE FIGURE 42- Heavy Silver SLOWEST A 1- He...
4 INSTALLATION INSTRUCTIONS 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 Figure 6 Changing the Advance Stop Bushing. SELECTING THE ADVANCE STOP BUSHING Three different advance stop bushings are supplied in the ...
