The demands for better emissions and fuel economy in the mid 1970s necessitated leaner fuel mixtures. These leaner mixtures required greater voltage and more spark to ignite. This challenge led GM ...

When we first met Steve Davis, owner of Performance Distributors, we knew immediately that he was an out-of-the-box thinker. That's a pretty common characteristic among successful entrepreneurs, but ...

High energy ignition (HEI) was introduced by General Motors in 1974 and became the standard for GM engines until the mid-1980s. An HEI system has three main components: an ignition module, a magnetic, ...

Sometime around 1975, General Motors made a significant advancement in ignition technology: the High Energy Ignition (HEI to you and me). Its best feature was simplicity. The coil was contained within ...

High energy ignition (HEI) was introduced by General Motors in 1974 and became the standard for GM engines until the mid-1980s. An HEI system has three main components: an ignition module, a magnetic, ...