hei ignition system [Archive] - Impala Tech

: hei ignition system


pacey
08-04-2011, 06:26 PM
hi all can any one tell me how to wire a a hei ignition system into a 66 ss impala cheers

Big Dave
08-04-2011, 06:45 PM
Drop it in and provide it with a new copper wire from the the fuse box all the way to the HEI that is powered when the key is turned on (otherwise you couldn't turn the engine off). You can not use the factory ignition wire you are replacing because it is a resister wire that drops the voltage from twelve to eight volts (this is to lengthen the life of the points you no longer have). That is about it assuming you know how to set the timing.

Big Dave

pacey
08-04-2011, 08:53 PM
Thanks buddy

HockeyFan
08-04-2011, 09:14 PM
It also has to be powered when the key hits "start". Ask me how I know.

Big Dave
08-04-2011, 10:31 PM
It also has to be powered when the key hits "start". Ask me how I know.

You can back feed power off of the solenoid to the ignition to power it during the start segment. Points cars are already wired this way as the factory provided full battery voltage (which dropped under load) to fire the points when you cranked up the car.

Many people would come into my shop and complain of the car cranking up and dying the instant they let go of the starter switch because they were powered during start but had a broken ignition wire other wise.

Big Dave

wogman75
08-06-2011, 10:18 AM
If you want to keep it looking original looking they make kits that fit under the distrbutor cap which remove your points and don't require any extra wiring.

Here is an example of the single wire one that is wired just like the factory wired your car. http://rover.ebay.com/ar/1/711-53200-19255-0/1?mpt=1834582738&adtype=1&size=1x1&type=3&campid=5336121807&toolid=10001 http://cgi.ebay.com/ebaymotors/M-H-Breakerless-SE-Single-Wire-Ignition-Module-GM-_W0QQcmdZViewItemQQhashZitem2c5d5193e9QQitemZ19054 4188393QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccesso ries (http://rover.ebay.com/rover/1/711-53200-19255-0/1?type=3&campid=5336121807&toolid=10001&mpre=http%3A%2F%2Fcgi.ebay.com%2Febaymotors%2FM-H-Breakerless-SE-Single-Wire-Ignition-Module-GM-_W0QQcmdZViewItemQQhashZitem2c5d5193e9QQitemZ19054 4188393QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccesso ries)