How does GM HEI ignition work?
HEI uses no ballast resistor or resistance wire. In a GM HEI system, the module replaced the contacts of the breaker points and the pickup coil was substituted for the rubbing block and distributor cam. The ignition coil fires when the module shuts off voltage to the coil primary. This is akin to the breakers opening.
What wires go to an HEI distributor?
Connect the primary wires to the HEI distributor, via a plug that snaps into the distributor cap. There are two wires in the plug: the hot wire and the tachometer wire. If you are updating from an old distributor, splice the old distributor hot wire to the hot wire of the HEI primary plug.
Should HEI distributor be grounded?
Engine man The modules and pickup coils shouldn’t be grounded to the distributor either. The newer HEIs have the coil mounted to the engine block so it gets it’s ground through the mount. Points need a ground in the distributor, but the electronic systems shouldn’t.
What does HEI ignition module do?
With an electronic module, an HEI can safely operate at much higher current loads. More power applied across the primary circuit of the coil means the coil can apply greater spark energy to the spark plugs. This additional power ensures more complete combustion at both idle and at wide open throttle.
When did the GM HEI ignition distributor come out?
GM’s high energy ignition (HEI) distributor has been used as an affordable, easy to install performance distributor since its introduction in the mid 70s. It should come as no surprise being one of the most popular options among modern rodders and race enthusiasts to this day.
How big is a GM Hei pin diagram?
We have actually collected many images, ideally this picture serves for you, and help you in locating the response you are looking for. Description : Gm Hei Wiring Pin Diagram Wiring Diagram For Chevy Hei Distributor for Ignition Switch Wiring Diagram Chevy, image size 792 X 612 px, and to view image details please click the image.
Why do you need a Hei wiring diagram?
Each part ought to be placed and linked to other parts in specific manner. If not, the arrangement will not function as it should be. In order to make sure that the electrical circuit is built correctly, Hei Wiring Diagram is necessary.
Which is the heart of a HEI ignition system?
HEI ignition systems are very dependable and offer great performance on a number of applications. The heart of any ignition system is the coil, battery voltage is supplied on the positive side, while the negative side is repeatedly pulsed to ground.