Msd 8361 Chevy V8 Street Pro-Billet w_Vacuum Advance I- User Manual
Msd 8361 Chevy V8 Street Pro-Billet w_Vacuum Advance I– 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 – CENTRIFUGAL ADVANCE CURVE; selecTIng The advance; Figure 4 Advance Curves.; Timing Curve From Factory; Figure 3 Spring Combination Chart.
- Page 4 – Figure 6 Changing the Advance Stop Bushing.; Note: If you want to lock out the vacuum advance; Figure 6 Locking Out the Centrifugal Advance.; BUSHING SIZE; Silver
- Page 5 – only be used if the; Figure 8 Marking the Rotor Location.; INSTALLING THE DISTRIBUTOR; Figure 9 Modified Block for use with O-Rings.; Installation Option: This Cap can also be
- Page 6 – vacuuM advance lockouT; Note: If no shims were required, use one beneath; Figure 12 Checking Installation of the Lockout
- Page 7 – Figure 13 Wiring to an MSD 6-Series Ignition Control.; coil tower when the engine is cranking or running.
- Page 8 – Figure 15 Wiring with an MSD 7-Series Ignition and Timing Control.; Note: MSD 6 and 7 Series Ignitions; share the same color wiring.; of the warranty. When returning MSD components for service,; Proof of Purchase must be supplied for; All returns must have a Return Material Authorization (RMA) number; issued; and shipping information.; M S D I G N I T I O N
M S D I G N I T I O N
• w w w . m s d i g n i t i o n . 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
MSD Pro-Billet Chevrolet V8 Distributor
PN 85551
with Vacuum Advance, PN 8361
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 8433
1 - Wire Retainer
2 - 1.5" Self Tapping Screws
2 - 10-32 x 3/4" Socket Head 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.)
Vacuum Advance (PN 8361 Only): The vacuum advance will advance the timing up to 10° during
partial throttle driving (with 15 lbs of vacuum). The vacuum line should be routed to a ported vacuum
outlet above the throttle plates.
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
1 - Vacuum Advance Lock-Out Kit
(PN 8361 Only)
WARNING: Before installing the MSD Distributor, disconnect the battery cables. When
disconnecting the battery cables, always remove the Negative (-) cable first
and install it last.
"Loading the manual" means you need to wait until the file loads and becomes available for online reading. Some manuals are very large, and the time they take to appear depends on your internet speed.
Summary
INSTALLATION INSTRUCTIONS M S D I G N I T I O N • w w w . m s d i g n i t i o n . 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) of the en...
INSTALLATION INSTRUCTIONS M S D I G N I T I O N • w w w . m s d i g n i t i o n . 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 CENTRIFUGAL ADVANCE CURVE selecTIng The advance sPrIngs The rate, or how quick the advance comes in is determined by the type of springs whic...
INSTALLATION INSTRUCTIONS M S D I G N I T I O N • w w w . m s d i g n i t i o n . 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 distribut...
