Making the HEI conversion SUPER simple!

[Canadian1968]

I saw those adapters when I first started to research the conversion. I just didn't like the idea of adding new wires or cutting the OEM ones. The reason I made my mount was to try and make the swap plug and play. Other guys has done this by gutting an old mopar ECU.

You can even add a relay to the system quite easy as well . Basically just substitute it for the OEM Ballast resistor. Use the IGN 1,2 wire for the trigger, terminal on the relay. The other 2 wires from the ballast which power the ECU and Coil are connected and output power of the relay. Add your input power ( usually from alternator stud ) and finally ground terminal of the relay. Still keeps factory harness installed.

OR just bypass the relay if you think your factory wiring is up to the task.

Im still playing with my mount trying to perfect it. Those little HEI module create alot of heat ! . As another member wrote in his own thread , my original design was lacking enough heat sink. His solution was the AC delco heat sink ADDED to mine which has been working great from my understanding.

 

[Geoff 2]

An ign relay is a good idea. I have had them on all my cars. HEI is an inductive system; reducing voltage drop provides more energy to the coil & module.

 

[Kern Dog]

UPADATE:

For any that have been flowing this and other threads in this forum about that HEI conversions. I have modified my original design slightly to ensure that the module is kept at an acceptable temperature.

Modifications

1. More venting was added to allow for air to completely past threw the entire mount. This will aid in actual "air flow" where there is actually a path for air movement from one end of the mount to the other.

2. Doubled up on aluminum plates . There is now 1/4" of aluminum plate

3. Added additional heat sinks to the backside of the mount. With the added venting this will allow for quick heat dissipation.

Keep in mind, if the correct parts are not installed it doesn't matter how big your heat sink is, you will cook your module. Another member here @zombezoo has an excellent thread that went threw some problem solving of the HEI setup. It also point out how important it is to have the correct ignition coil for the setup !!

ENjoy!

This is a great idea.
As per the rules here, we can't advertise the sale of such things outside of the sales section of the forum but I am interested. I'll check in with you through PMs.
I have a 1.6 ohm coil in one car, a 1.8 ohm coil in another. Are they compatible with the HEI system?