MSD 8394 Digital E-Curve Pro-Billet Distributor Chevy SBC/BBC Vacuum Advance


  • Digitally controlled stand-alone distributor with adjustable electronic advance.
  • Set a centrifugal advance and vacuum advance curve electronically.
  • High output ignition module produces a powerful spark for improved performance.
  • Simple three wire connection and you’r ready-to-run
  • Dial-in a rev limit to protect your engine from overrev damage
SKU: MSD8394 Category:

MSD Digital E-Curve distributors will drop right into your engine and fire up with three simple connections! Not only are there no external controls or boxes to mount and connect, but you can set a timing curve with the twist of a rotary dial! That’s right, no more springs or stop bushings to fumble with. A new digital module lets you select from 20 different “centrifugal” curves and five vacuum curves–that’s 100 combinations! Simply remove the cap to access the rotary dials and select a curve to match your application. You can also set an rpm limit that will protect your engine from over-rev damage caused by a missed shift or driveline failure.

Weight 4.55 lbs
Dimensions 17.6 × 7 × 7 in




Off-Road Racing Use Only

Manufacturer Part Number



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Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to