Product Summary

HEI / Male Cap Type, HEI / Male Cap Terminal Style

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    Key Specs

    D-40-39
    MFG. Part #8523
    BrandMSD
    Cap TypeHEI / Male
    Advance TypeMechanical and Vacuum
    CARB EO#
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    MSD 8523 Details

    Finally an answer for your AMCs worn out breaker points distributor! This Ready-to-Run Pro-Billet Distributor has a built-in inductive module that produces up to 7.5 amps to create a high voltage spark at the plug. This spark improves combustion of the fuel mixture resulting in quick starts, a smooth idle and great performance!
    • 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 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 an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
    • Does not require an MSD Ignition Control
    • CARB E.O. Approved
    • Includes built-in Rev Limiter!

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    MSD 8523 Specifications

    D-40-39
    KEY SPECS
    MFG. Part #8523
    BrandMSD
    Cap TypeHEI / Male
    Advance TypeMechanical and Vacuum
    CARB EO#
    GENERAL
    External Ignition Box RequiredNo
    Cap Terminal StyleHEI / Male
    Trigger StyleMagnetic
    Hall EffectNo
    Sync SignalNo
    Trigger SensorsSingle
    Gear MaterialIron
    Gear RotationStandard
    Ignition Box RequiredNo
    Mechanical Tach DriveNo
    Slip CollarNo
    Housing MaterialBillet Aluminum
    Housing FinishNatural
    EmissionsCalifornia EO Approved
    Marine UseNo
    Sold in QuantityEach
    NotesWhen installing a new distributor and distributor gear in an AMC V8, it is highly recommended to also install a new camshaft mounted, distributor drive gear.
    GTIN Code085132085231
    Spark Plug Wires IncludedNo
    Ignition Box IncludedNo

    Questions & Answers

    Fitment

    • 390 AMC V8

    • 390 AMC V8

    • 390 AMC V8

    • 390 AMC V8

    • 390 AMC V8

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