Upgrade your ignition system with the powerful, maintenance‑free PerTronix Ignitor II® 91181—a fully solid-state conversion kit designed to replace points and condensers while fitting neatly under your distributor cap for a clean, stealthy install.

✅ Key Features & Benefits

• Adaptive Dwell Control — A microcontroller monitors coil current and adjusts the dwell for maximum energy delivery throughout the entire RPM range, reducing misfires and improving performance.

• High Energy Output — Delivers up to 4× more energy between 3,000–5,000 RPM compared to standard point-based systems, and approximately 2× more plug voltage overall.

• Clean, Hidden Design — Fits completely inside the distributor; no external modules cluttering your engine bay.

• Reverse Polarity & Overcurrent Protection — Safeguards the module from wiring mistakes or electrical abuse.

• Better Starting & Stability — Increases dwell during startup for stronger ignition, and constantly adapts to keep timing stable at high RPM.

🧰 Typical Applications & Fitment

The PNX‑91181 version is commonly used with Delco 8‑cylinder distributors and works for a variety of American V8 engines from the late 1950s through the 1970s. 
It’s ideal for classic car restorers, muscle car builders, street rods, and anyone wanting a reliable, point-free ignition without altering the external look of the engine.

⚠️ Notes & Installation Tips

• Use suppression‐style or spiral‑wound spark plug wires. This system is not compatible with solid‑core spark plug wires. Always verify negative ground, 12 V systems. Forward polarity is assumed.

• While it fits inside the distributor, take care to route wiring cleanly and avoid interference with moving parts.

• For best results at high RPMs, pairing with a low-resistance, high-output coil (like PerTronix’s Flame-Thrower II) is recommended.