MSD Ignition 83811 fits the following vehicles:
- 1995-1997 Chevrolet Camaro
- 1995-1996 Chevrolet Corvette
- 1995-1996 Chevrolet Impala
- 1996-1997 Pontiac Firebird
- 1995-1996 Chevrolet Caprice
- 1995-1996 Buick Roadmaster
- 1995-1996 Cadillac Fleetwood
- The MSD Optispark Distributor is a high performance billet aluminum upgrade engineered for GM LT1 engines, delivering accurate and dependable ignition timing control
- CNC machined from a solid billet aluminum block to create a precision housing that serves as a direct replacement for the factory LT1 Optispark unit
- Incorporates an advanced optical encoder trigger system designed to supply consistent and stable signals, even at elevated RPM and demanding operating conditions
- Features a securely indexed rotor drive assembly supported by a large ball bearing to help maintain precise timing accuracy up to 10,000 RPM
- Includes an integrated timing adjustment screw that provides up to ±5 degrees of ignition fine tuning
- Enhanced housing design with a reinforced cap mounting surface, an additional fastener to help reduce the potential for leaks, and a sealed fresh air vent to protect against debris and moisture intrusion
- Covered by a 1-Year Warranty
For GM LT1 applications, maintaining accurate ignition timing is essential to achieving smooth street manners and strong high RPM performance. A reliable distributor ensures consistent spark delivery, stable timing signals, and durability in demanding conditions. Designed as a performance oriented replacement for the original equipment unit and offered for both early and late model configurations, the MSD Optispark Distributor provides a refined ignition solution for LT1 powered vehicles.
Each MSD Optispark Distributor begins as a solid billet aluminum block that is precision machined into a robust housing engineered to replace the factory GM LT1 Optispark assembly. Inside, an advanced optical encoder trigger system generates clean, accurate signals that remain consistent even at elevated engine speeds and under harsh operating conditions. The rotor is secured to a positively indexed drive mechanism to prevent slippage and is supported by a large diameter ball bearing designed to maintain stable timing accuracy up to 10,000 RPM.
A unique integrated adjustment screw allows ignition timing changes of up to plus or minus 5 degrees, offering a level of tuning flexibility not commonly found in this style of distributor. Each unit includes a heavy duty LT1 cap, rotor, and the necessary components for installation. The redesigned housing incorporates a thicker cap mounting flange and an additional fastener to help reduce the potential for leaks, along with a sealed fresh air vent system to help protect internal components from contaminants.
With billet aluminum construction, dependable optical triggering, and built in timing adjustability, this distributor is engineered to deliver the precision and durability required for performance LT1 builds. It serves as a comprehensive ignition upgrade for both early and late model applications. Backed by a 1-Year Warranty.