MSD 8391 Chrysler 331/354 Hemi Ready-to-Run Distributor

The Ready-to-Run dis­tributor earns its name with simple wiring. One wire to 12 volts, one to coil negative and another to ground. That’s it! A match­ing harness with a 3-pin Weathertight connector is supplied.  Does not require an MSD Ignition Control.

• Simple and clean installation with only three wires to connect
• Powerful built-in module produces a 7.5 amp single spark through high rpm
• 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 sealed ball bearings
• Advance plate and weights are fine blanked from Chromoly 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 a HEI style distributor cap and rotor (accepts Cap-A-Dapts)
• CARB E.O. Approved

547-8391 Instructions (PDF)