Msd 8478 Ford 351W Street Pro-Billet Installation- User Manual
Msd 8478 Ford 351W Street Pro-Billet Installation– 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 SPRINGS; ). These will give you the slowest; Figure 4 Advance Curves.; Timing Curve From Factory
- Page 4 – Figure 5 Advance Stop Bushing Chart.; SELECTING THE ADVANCE STOP BUSHING; BUSHING SIZE; CHANGING THE ADVANCE STOP BUSHINGS
- Page 5 – INSTALLING THE DISTRIBUTOR; Figure 8 Locking Out the Centrifugal Advance.
- Page 6 – Figure 11 Connecting an MSD Ignition Control.
- Page 7 – Tech Notes
- Page 8 – Limited Warranty; 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; TECH NOTES
Important:
Read these instructions before attempting the installation.
Parts Included:
1 - Pro-Billet Distributor
1 - Rotor, PN 8467
1 - Distributor Cap, PN 8431
1 - Advance Kit
1 - O-ring Seal
1 - Tube of Gear Lubricant
1 - Parts Bag
Note: An MSD 6, 7, 8 or 10 Series Ignition Control must be used.
Note: The spark plug wire terminals of the Small Diameter Distributors are HEI style terminals. You
may need to change the terminals and boots of your wires. MSD offers a kit, PN 8850, that
comes with nine boots and terminals.
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 of centrifugal advance that your
distributor is capable of is determined by the stop bushing. 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
and plug the vacuum advance.)
Vacuum Advance: 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.
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
ONLINE PRODUCT REGISTRATION: Register your MSD product online and you’ll be entered
in our monthly 8.5mm Super Conductor Spark Plug Wire give-away! 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.
MSD Pro-Billet Small Diameter
Street Ford V8 Distributor
PN 8477; 351C-460, PN 8478; 351W
PN 8479; 289/302
"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
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 CENTRIFUGAL ADVANCE CURVE SELECTING THE ADVANCE SPRINGS The rate, or how quick the advance comes in is determined by the type of springs whi...
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 5 Advance Stop Bushing Chart. Figure 6 Changing the Advance Stop Bushing. Figure 7 Removing the Retaining Sleeve. SELECTING THE AD...
