• Billet housing is 5/8" smaller in diameter than stock Ford distributors.
• Easy-to-adjust mechanical advance with supplied springs and stop bushings.
• Vacuum advance canister for improved economy (can be locked out).
• CNC machined billet aluminium housing and billet aluminium 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 apt).
• Requires the use of a separate ignition box, such as an MSD 6, 7, 8, or 10 Series ignition

The Street Pro-Billet is a popular route for people looking for proven race performance for their street cars. A vacuum advance canister provides economy and the proven MSD mechanical advance gives you the opportunity to dial-in a timing curve to fit your needs. Inside, an oversized steel shaft is QPQ-coated for low friction and rides in a sealed ball bearing at the top of the distributor with an extra-long sintered bushing at the bottom. This combination keeps the shaft steady creating accurate spark delivery at any rpm. The Street Pro-Billet relies on a magnetic pick-up to trigger the MSD Ignition Control which delivers the powerful sparks to the coil. This pick-up is extremely accurate and never needs adjusting.

Product Reviews for MSD8478 - MSD