Installation Owner's manual

ManualsBrandsMSD ManualsCar8478 Ford 351W Street Pro-Billet

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 to t a l of the initial timing plus the centrifugal a dvance 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

Summary of content (8 pages)

PAGE 1
MSD Pro-Billet Small Diameter Street Ford V8 Distributor PN 8477; 351C-460, PN 8478; 351W PN 8479; 289/302 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.
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INSTALLATION INSTRUCTIONS 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 engine. Any factor that changes the burning rate of the fuel or the engine speed can cause a need for an ignition timing change. Figure 1 shows some of the factors that will affect engine timing.
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INSTALLATION INSTRUCTIONS 3 CENTRIFUGAL ADVANCE CURVE SELECTING THE ADVANCE SPRINGS 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 (Figure 2). These will give you the slowest advance curve possible. The parts kit contains two additional sets of springs which can be used to match the advance curve to your particular application.
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INSTALLATION INSTRUCTIONS SELECTING THE ADVANCE STOP BUSHING Three different advance stop bushings are supplied in the distributor kit. The distributor comes with a Blue (21°) bushing already installed. If a different amount of centrifugal advance is desired, follow the next procedure to change the bushings. The chart in Figure 5 gives the size and approximate degrees for the corresponding bushings.
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INSTALLATION INSTRUCTIONS 5 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. Note this position by making a mark (Figure 9). 3. Place the distributor cap back on and note which plug wire the rotor is pointing to. MARK THE SPARK PLUG WIRES and remove the distributor cap. 4. D i s c o n n e c t t h e w i r i n g f r o m t h e distributor. 5.
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INSTALLATION INSTRUCTIONS Figure 10 Wiring the Ready-to-Run Ford Distributor. Figure 11 Connecting an MSD Ignition Control. MSD • WWW.MSDPERFORMANCE.
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INSTALLATION INSTRUCTIONS 7 Tech Notes _______________________________________________________________________________________ _______________________________________________________________________________________ _______________________________________________________________________________________ _______________________________________________________________________________________ _______________________________________________________________________________________ _______________________________
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TECH NOTES _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _____________