Optispark Distributor – 1992 Corvette

Petris Optispark Distributor - Ventilated Upgrade for 1992 LT1 Corvette

Replace your 1992 Corvette’s original unventilated Optispark distributor with our premium ventilated upgrade — a trusted solution backed by over 30 years of testing, refinement, and real-world performance.

Each unit is a blueprinted assembly, built from the ground up in the USA using globally sourced components that meet or exceed OEM standards. Unlike rebranded or mass-produced alternatives, each distributor is hand-assembled from the component level using premium parts — not just repackaged and resold.

It’s built the right way — using vetted materials and techniques perfected by Chris Petris.

Every unit is fully tested on our test stand at 800 RPM prior to shipment to verify:

• Proper spark output

• Fuel injector pulse

• No ECM/PCM fault codes detected 

Why Choose Our Ventilated Optispark Distributor?

✅Proven, High-Quality Optical Sensor
Our optical module has been rigorously tested in-house and in the field, delivering stable signal output and precise timing. It has proven equivalent in performance to the original Mitsubishi-equipped ACDelco units. While those original sensors are no longer available, this trusted alternative has been our go-to for years — offering exceptional reliability and long-term durability. 

✅ Ventilated Distributor Cap with Brass Terminals
Features a cast-in ventilation port and premium brass terminals with high-voltage distribution straps — built for durability and superior performance.

✅ Protection Against Common Failure Points
All internal components are secured with Loctite and are designed to resist common issues caused by moisture and heat buildup.

✅ Upgraded Viton Bearing
Each unit features a Viton-sealed bearing — a durable choice with excellent chemical and temperature resistance. While the bearing type becomes less critical when temperatures are properly managed (as our ventilation system ensures), we use Viton to add another layer of long-term reliability.

✅ Complete Vacuum Hose Assembly Included
We include a professionally assembled vacuum harness with the correct check and restrictor valves to prevent pressure damage to the cap.

➡️ For 1992 models upgrading to a ventilated system, a small hole must be added to the air intake duct to install the included elbow fitting. The second hose connects to the intake via the provided manifold fitting.

✅ Electrical Harness is Also Built In-House
No need to reuse old or brittle wiring - we provide a brand-new harness built with the correct 20-gauge TXL wire and Aptiv terminals.

What’s Included

• Ventilated Optispark distributor ready to install

• Vacuum harness (with high-temp split loom to protect it after installation)

• Electrical harness with correct six-position electrical connector

• Brass manifold fittings

• Installation instructions (factory service manual is recommended as a supplement)

Looking for a more comprehensive refresh of your LT1 engine?

Our complete kit is the perfect solution to refresh the front of your LT1 engine. Rather than piecing together parts from multiple sources, it offers everything you need — and nothing overlooked. This carefully curated bundle ensures compatibility, eliminates guesswork, and saves time. As a bonus, it includes a custom tool to help install the water pump seal correctly — a small detail that makes a big difference.

Fits the Following Vehicles:

• 1992 Chevrolet Corvette with LT1 engine

Backed by our 1-year, unlimited mileage warranty.

Installation overview video (updated version coming soon)