HEI vs. MSD

[mike16]

I have an old style MSD 6AL

Its nice but I have had some problems latley I cannot troubleshoot

Hei are all but fool proof,

Yes, a big thick wire to the positive running a full 12 volts

You can get away with a larger plug gap except harder starting and at higher altitudes

be sure to put some of that dialectric grease between the modual and the housing or it will indeed fail

I prefer a GM HEI used, over a Chicom new one. just based on experience.