How to find the right Automotive Performance Ignition Systems & Kits AI guide

What the AI looks for in Automotive Performance Ignition Systems & Kits

Engine family and firing order

Match the distributor or kit to the exact engine family, deck height, and any non-standard firing-order swap cam. Distributor shaft length, gear and cap terminal layout are engine-specific, and the wrong one will not seat or will misfire.

Distributor gear vs. camshaft material

Match the distributor gear material to the cam gear: iron for flat-tappet iron cams, and the cam maker's specified gear (often bronze, composite or steel) for billet steel roller cams. A mismatched gear can wear quickly and shed metal into the oiling system.

Conversion scope

Choose a points-replacement module if the distributor is healthy, or a complete distributor if the bushings, shaft or advance are worn. A new trigger in a sloppy distributor still gives wandering timing.

Timing control method

Use mechanical and vacuum advance for carbureted setups, or a locked-out distributor or crank or cam trigger when an EFI or ignition controller sets timing. Running both mechanical advance and electronic timing control causes doubled or unpredictable advance.

Matched coil, wires and plug gap

Use the coil the kit maker specifies, suppression-core wires near electronics, and re-gap plugs per the ignition maker's guidance. Higher-energy systems change ideal plug gap, and solid-core wires can interfere with EFI and radios.

Coil-on-plug conversion fitment

Confirm the coil brackets, harness and trigger work with your heads, valve covers and engine management. Universal coil-on-plug kits often need extra brackets or a controller that is sold separately.