Street rods look great with matching-era power, and the early Hemi 331/354 engines are a great fit — the MSD Early Hemi Chrysler 331 Ready-to-Run distributor brings those ignitions up to date. A maintenance-free magnetic pickup and precision reluctor deliver stable trigger signals throughout the rpm range, feeding a built-in module that produces a powerful 7.5-amp single spark. The mechanical advance can be locked out for crank trigger systems, and a vacuum advance canister improves economy while remaining easy to adjust with the supplied springs and stop bushings.
Specifications:
- Color: Red
- Distributor Type: Ready To Run
- C.A.R.B. EO #: D-40-39
- Warranty: Manufacturer's Limited 1 Year Warranty
- Part Number: 8391
Fits early Hemi 331 and 354 engines; includes a built-in rev limiter.
Compliance: This distributor carries California Air Resources Board (CARB) Executive Order EO# D-40-39, making it legal for sale and use on Emissions Controlled Vehicles in all 50 states when installed per MSD's application guide.
FAQ
What Chrysler engines is the MSD 8391 built for?
Early Hemi 331 and 354 engines.
Is the MSD 8391 CARB legal?
Yes, it carries CARB Executive Order EO# D-40-39.
Does the 8391 need a separate ignition box?
No, it has a built-in ignition module producing a 7.5-amp single spark, so only three wires need to be connected.
Can the mechanical advance be locked out?
Yes, it can be locked out for engines running a crank trigger system.
