Dumb question - How do I know if I have HEI ignition components? I have a all stock parts on my '89 IROC L03 305 TBI. Were HEI components stock on that setup? How can ya tell if it is HEI or not?


Thanks,
Andy

 

MX,

Your '89 came stock with an HEI ignition. HEI uses an amplifier/switching module in the base of the distributor to operate the ignition coil in place of mechanical contact points (Kettering ingnition).

 

Thanks Vader. One more quick question: Could I throw in a MSD HEI coil to replace the stock one without having to swap out any other parts? The reason I ask is I think it's time to swap the coil anyways, so I thought I would upgrade while I was at it.

Thanks again,
Andy