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.

MSD Pro-Billet Small Diameter

Street Ford V8 Distributor

351C-460: PN 8477, PN 84771

steel gear,

351W: PN 8478, PN 84781

steel gear,

289/302: PN 8479, PN 84791

steel gear

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.

Note: Vacuum Advance can be locked using lock plate in parts bag.