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1992-1994 Corvette LT1 OptiSpark Distributor Pro Billet MSD

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Brand Logo MSD
Item ID: 698-179
Availability: Ships Directly From Supplier
   Pending Manufacturer Availability
Fits Years:
  • 1992-1994
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  • Description

1992-1994 LT1 OptiSpark Distributor Pro Billet MSD

Light up your 1992-1994 Corvette's weak LT1 OptiSpark Ignition System with a Pro Billet Distributor from MSD!  Finally, an all-out performance distributor to replace the OEM GM LT1 OptiSparks.  MSD's Pro-Billet LT1 distributors feature a precision-machined billet aluminum housing that fits in place of the factory piece, a new pickup assembly, a trick timing adjustment mechanism, and a new MSD distributor cap and rotor. The pickup is an advanced optical encoder that has proven to be very reliable and stable through extreme rpm and conditions. The rotor is bolted to a drive assembly that is indexed to the shaft, and is stabilized through the use of a large ball bearing assembly. The distributors use an adjustment screw to advance or retard the timing by up to 5 degrees.

NOTE: Water Pump leaks are the most common cause of Opti-Spark failures. Since water pump removal is required to replace the Opti-Spark distributor, please visit our You Will Need and We Recommend tabs for planning ideas.  

  • Trigger Style: Optical
  • Advance Type: Computer-controlled
  • Cap Style: Crab style
  • Ignition Box Required: No
  • Distributor Gear Rotation: Standard
  • Distributor Cap Color: Red
  • Housing Material: Billet aluminum
  • Housing Finish: Natural
  • Provides More Accurate Timing Than Stock OptiSpark
  • Advanced Optical Encoder Trigger Design
  • Allows Adjustment Of Timing +/-5°
  • Fresh Air Vented & Sealed To Keep Dirt & Water Out
  • Includes Fresh Air Vacuum Kit
  • Large Ball Bearing Stabilizes Timing Through 10,000 RPM

Tech Tip: On 1992-1996 LT1 Corvettes, you must remove the water pump to service the OptiSpark Distributor. So when you service your OptiSpark Distributor, it is a good time to replace a questionable water pump. In fact, the most common cause of OptiSpark Distributor failure is a coolant leak from the pump. Whenever you remove your water pump, always replace the gasket to prevent leaks.

Also known under these part numbers: (For reference only)

  • 085132083817
  • 8381