To ensure that the test was fair, we had to make this distributor as good as new, or better. So, before it ever saw action, the stock distributor was treated to a new rotor, cap, and module.

Classic Delco distributors seem to cover the gamut of types, ranging from single-point to dual-point in aluminum and cast iron. We're about to tackle a cast-iron, tach-drive distributor.

Read about how to install GM's Advanced High Energy Ignition electronic distributor in 4Wheel & Off-Road Magazine.

The first step in replacing ignition coils is determining the type., Depositphotos Here’s How To Diagnose and Test An Ignition Coil Let’s do this!