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Author Topic: Hei and the old ICM  (Read 3330 times)

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Offline 85AmCfreak

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Hei and the old ICM
« on: July 17, 2012, 02:46:36 PM »
So I was under the hood the other day and was thinking. I have a GM hei setup in the 83, why do I still have the old motercraft ICM? It was done by the P/o so the wiring is pretty choppy. Can I just unplug and unbolt it? It is very cluttered down there and I would like to tidy up the wiring.
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I Don't know why. But everybody's always talking about their STI or That guys EVO, I think I'll stick with my old, but reliable AmC. Did I ever tell you I was Full blooded Eagle?

Offline eaglefreek

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Re: Hei and the old ICM
« Reply #1 on: July 17, 2012, 03:09:15 PM »
Do you have a Motorcraft carb also? I have an MSD ignition and removed all the wiring to the ICM and stepper carb a couple days ago. Except for the one relay on the right fender well, everything unplugged. I had to cut the wires coming out of that relay.
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Offline GRONK

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Re: Hei and the old ICM
« Reply #2 on: July 17, 2012, 03:24:49 PM »
The HEI should be wired right from the starter solenoid so no need for the ICM.  Make sure you wire in a 12V ceramic resistor for protection.
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Offline 85AmCfreak

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Re: Hei and the old ICM
« Reply #3 on: July 18, 2012, 05:52:11 AM »


Quote from: GRONK on July 17, 2012, 03:24:49 PM

 Make sure you wire in a 12V ceramic resistor for protection.


I am running a weber no feed back on this one. Whats the resistor for?
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I Don't know why. But everybody's always talking about their STI or That guys EVO, I think I'll stick with my old, but reliable AmC. Did I ever tell you I was Full blooded Eagle?

Offline GRONK

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Re: Hei and the old ICM
« Reply #4 on: July 18, 2012, 10:31:04 AM »
Protects from voltage spikes to the HEI.  HEI's burn up from unregulated power.  Require a full 12V but don't line anything more than that.
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Offline 85AmCfreak

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Re: Hei and the old ICM
« Reply #5 on: July 21, 2012, 12:52:33 AM »
oh..;D..oops
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I Don't know why. But everybody's always talking about their STI or That guys EVO, I think I'll stick with my old, but reliable AmC. Did I ever tell you I was Full blooded Eagle?
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