Ignitions and Electrical› Distributors, Magnetos and Crank Triggers
MSD
Ford 351W Street Pro-Billet Small Diameter Distributor For 351W, Includes Iron Gear And Vacuum Advance. Must Be Used With An MSD 6, 7 Or 8-Series Ignition MSD Ignition
SKU: M00T 8478
Moderate — 2–4 hours
Description
Part #: 8478
MSD engineers fit all of their high performance distributor experience into a special compact housing designed to be less obtrusive for Ford engines. The diameter of the special cap and housing are 5/8" smaller than stock Ford distributors providing extra room in front of the engine. The new MSD cap features spark plug style terminals and is firmly screwed down to the housing.
Features:
- Billet housing is 5/8" smaller in diameter than stock Ford distributors
- CARB E.O. Approved
- Easy-to-adjust mechanical advance with supplied springs and stop bushings
- Vacuum advance canister for improved economy (can be locked out)
- CNC machined billet aluminum housing and billet aluminum base
- Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
- Polished steel shaft is QPQ coated and guided by a sealed ball bearing
- Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction
- Mechanical advance assembly can be locked out for crank trigger systems
- Advance weight pins are staked and tig welded to the plate
- Nylon pads ensure smooth operation of the advance weights
- Supplied with small diameter cap with HEI style terminals and race rotor (will accept 8441 Cap-A-Dapt)
- Must be used with an MSD Ignition Control
Small diameter distributor for 351W, includes iron gear and vacuum advance. Must be used with an MSD 6, 7 or 8-series ignition.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | MSD |
| Part Number | M00T 8478 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy