MSD now provides the spark for the new retro all aluminum W-block. This distributor is Ready-to-Run which means you just need to connect three wires to fire up the engine. No external ignition controls are required. It has a powerful module built into the housing. This module produces a stout inductive spark  that will improve the overall driveability and performance of your classic Chevy.

 
MSD now provides the spark for the new retro all aluminum W-block. This distributor is Ready-to-Run which means you just need to connect three wires to fire up the engine. No external ignition controls are required. It has a powerful module built into the housing. This module produces a stout inductive spark  that will improve the overall driveability and performance of your classic Chevy.
 
PN 83931
PN 83931 - Chevy 409/509 Aluminum Block
 
Features:

    Specially designed for the All Aluminum 409/509 Block
    Maintenance-free magnetic pick-up never requires adjusting
    Built-in ignition module delivers a powerful spark
    Simple and clean three-wire installation
    Includes built-in Rev Limiter

For more information, please visit www.msdperformance.com