hi all, what is meant by HEI type coil??????????????
High Energy Ignition. It was originally a G.M. name, Delco I guess.
Yes, its a GM type coil-distributor combination unit.
the coil is actually mounted on the distributor cap.
there are a lot of aftermarket pieces for these distributors, they are even available to fit some Ford engines. A company named D.U.I. makes a very good unit.