Summit Racing has introduced its High-Output 4-Pin HEI Performance Module for AMC and GM applications, aimed at delivering stronger spark output and reliable ignition operation. The release comes amid ...

High performance is all about horsepower. But even the ultimate in heads, compression, cam, and the rest won’t make power if you can’t light the fire. Ignition systems don’t make horsepower, but a ...

My 1978 Corvette is cutting out under acceleration. I took the car to the dealership, and they told me the distributor was defective and would need to be replaced. I would like to keep as many ...

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 ...

Around 1975, General Motors made a significant advancement in stock passenger ignition technology: the High Energy Ignition (HEI). One of its major features was installation simplicity. The coil was ...