Early Hemi Chrysler 331 Ready-to-Run Distributor

Fits early Hemi engines 331, 354. Ready-to-run distributors include a built-in ignition module. No MSD Ignition control required. Includes a built-in rev limiter

PART# 8391

Suggested Retail: $453.95
Your Price:$407.95
Free Shipping on orders over $100*


Street rods look great with matching era power plants and the early Hemi engines are a great fit! More rodders are turning to these engines and MSD is excited to offer our Ready-to-Run Distributor to bring their ignitions up to date!


  • Simple and clean installation with only three wires to connect
  • CARB E.O. Approved
  • Does not require an MSD Ignition Control
  • Supplied with a HEI style distributor cap and rotor (accepts Cap-A-Dapts)
  • Mechanical advance assembly can be locked out for crank trigger systems
  • Polished steel shaft is QPQ coated and guided by sealed ball bearings
  • Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
  • Powerful built-in module produces a 7.5 amp single spark through high rpm
  • Vacuum advance canister for improved economy (can be locked out)
  • Easy-to-adjust mechanical advance with supplied springs and stop bushings
  • Includes a built-in Rev Limiter!


Emission Code1
WarningCalifornia Proposition 65

Tech Resources


This part is legal for use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it has a California Air Resources Board Executive Order number or is a direct or consolidated replacement part.

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
WARNING FOR 8391: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
*Free Shipping & Handling only offered to the continental US on orders over $100.