Then just plug a basic timing-curve module ... ignition curve until boost is obtained, and then a given amount of timing retard per psi of boost pressure can be achieved. The MSD control boxes ...

This month, we thought we’d investigate the advantages of high-performance inductive systems like the High Energy Ignition (HEI).General ... the module performs is electronic control of the ...

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 ...

MSD Atomic Fuel Injection power module can also control timing and covers ... Since the Atomic EFI does not have a built-in ignition driver your points or HEI distributor will require ignition ...

HEI ignition is considerably more maintenance-free. The task previously accomplished by fragile points is taken over by a reliable solid-state electronic module that can accept a full 12 volts of ...

When General Motors introduced the High Energy Ignition (HEI) distributor in the mid-1970s, it was revolutionary. So much so that it still has a strong following among today's hot rodders.