ICM Interchangability

[v6buicks]

I was going to copy bs009, and modify my spare ICM for a future WOT box install because no lift shifting would be pretty tits. Once I opened mine up, I noticed it looked a lot different from his. I got it for free from a friend who was cleaning out his schools shop. It was supposed to be from the engine he gave me, but it could also be from a 3100. Does anybody know what the difference is between them? Externally they look identical, but maybe the 60 degree unit produces a weaker spark? I'll probably just toss this unless somebody knows for sure that it will work just fine.

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[v6buicks]

Also, does anybody know where to find a PN on the ICM? I can't find any that would tell me for sure that I have the wrong one. It seems that the 60 degree and 3800 engines have different crank triggers which would basically make this ICM worthless if it's for a 60.

 

[bs009]

Don't the 3100/3400 ICMs have multiple harnesses on them?

Not sure how to tell what that one's from, but I took apart two different ICMs that I had and both looked the same underneath

 

[v6buicks]

Don't the 3100/3400 ICMs have multiple harnesses on them?

Not sure how to tell what that one's from, but I took apart two different ICMs that I had and both looked the same underneath

I have seen multi-harness version you're talking about. I guess I'm only going off rockauto stock photos to base my assumptions about looking the same. Lol

 

[Turbocharged400sbc]

The non 3800 icm's have several connectors on them the 3800 icm's have one single long connector. However there are a couple of different versions of the 3800 i c m one of them does not work with a car equipped with the 18x trigger and only works with the older 3x trigger cranks.

First things first what color is The Grommet where the electrical connector is.

 

[Turbocharged400sbc]

It should be the same color as those coil grommets. If it's more reddish or green then it's a garbage I see m, don't use it

 

[v6buicks]

I don't think I realized that there were different crank triggers among 3800s. When did they change it?

Here's my grommet.

 

[v6buicks]

It should be the same color as those coil grommets. If it's more reddish or green then it's a garbage I see m, don't use it

What would be a good color? Looks like mine is reddish. Lol

 

[Turbocharged400sbc]

It's a darker red than those coil grommets?

The orange grommet means it's the oem i c m if you see green or redish it's an aftermarket and is garbage in my eyes.

I've had so many issues with aftermarket icm's over the years that I honestly suggest going to the junkyard and getting a good used OEM One. Make sure the grommet is orange

 

[v6buicks]

It's a darker red than those coil grommets?

The orange grommet means it's the oem i c m if you see green or red it's an aftermarket and is garbage in my eyes.

I've had so many issues with aftermarket icm's over the years that I honestly suggest going to the junkyard and getting a good used OEM One. Make sure the grommet is orange

They're the same color of orangish. In that case would you say to try it?

 

[Turbocharged400sbc]

Yeah probably just means it's a newer OEM Icm with a smaller cheaper to make Electronics board. Maybe that's why all the later model cars suck ass

 

[v6buicks]

Gotcha. This came with my '03 block so it's right at the beginning of the cheap ass years.