Running through a brief refresher course, it's important to note that an HEI setup replaces the traditional points and condenser setup with a control module. This module is able to deliver much ...

We put a Chevy small-block to the test on the dyno to see if a distributor really can make power in street stock racing classes, as well as if thinner synthetic oil can make more power as well ...

Originally, the HEI system was fitted with a four-pin module. By 1978, it had a five-pin unit. Seven and eight-pin modules were more a computer-controlled element that came around in the 1980s.