1972 Corvette and Petronix Ignitor ignitions

[Christopher R.]

any helpful advice out there when running petronix ignitions on early C3's? in terms of powering it up and which coil runs best with it? I have experienced some drivability problems and wanted to see if other members have had them too. Most notably, do you need to run 12v constant power off the fuse panel or literally just using the positive side of the coil is enough? I have seen videos on youtube that show both ways, but i definitely feel a miss when the engine gets hot during longer drives.

This is the only deviation from Stock i have made from my 72 L48 Automatic with AC just to improve cruising around the area i live in. Thanks again.

[Mark E.]

Re: 1972 Corvette and Petronix Ignitor ignitions

Christopher,

I can't answer the Pertronix wiring question, but its voltage requirement should be specified in the installation instructions. What do they say?

I doubt adding an electronic ignition will solve a drivability problem. You'll need to determine its cause and fix it.

Step one may be to go back to the stock ignition to eliminate the Pertronix as a cause of the problem. The stock ignition is more than capable of handling a base engine cruising around the area. My '70 454 4-speed runs great with points.

Also, points/condenser is arguably more reliable than an aftermarket electronic ignition which can suddenly fail.