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Help with truck coil conversion!?

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Old Apr 30, 2009 | 05:37 PM
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Default Help with truck coil conversion!?
I ordered new truck coil packs and am wondering what else I need to get to make these work on my LS1 car.

Do I need to get a different wiring harness or can I use the stock LS1 harness?

Will the plug wires I was running with my LS1 setup work or do i have to change?

I am not relocating anything and will make a new bracket if I have to!

Any information or a link to a write up on this would be great. Otherwise I will wait till the coil packs arrive and figure it out on my own.

Thanks in advance
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Old Apr 30, 2009 | 05:45 PM
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From: Jax, Fl
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Originally Posted by TrakDay
I ordered new truck coil packs and am wondering what else I need to get to make these work on my LS1 car.

Do I need to get a different wiring harness or can I use the stock LS1 harness?

Will the plug wires I was running with my LS1 setup work or do i have to change?

I am not relocating anything and will make a new bracket if I have to!

Any information or a link to a write up on this would be great. Otherwise I will wait till the coil packs arrive and figure it out on my own.

Thanks in advance
i believe its a direct replacement but im not 100% sure
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Old Apr 30, 2009 | 06:18 PM
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I bought my truck coils with brackets and harness so can't help you there. I bought aftermarket ls1 wires for fbody/vette and there is little to no slack (which worked great for me since it keeps them off the headers). But they did reach. (large square mitsubishi coils)
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Old Apr 30, 2009 | 07:41 PM
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The truck coils have two different styles, round and square, neither of which have the same mounting holes as the ls1 coils. They use the same plugs though
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Old May 1, 2009 | 02:33 AM
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so we will have to get truck mointing brackets
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Old May 1, 2009 | 06:15 AM
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This is from a post I made long time ago....

For guys who are planning to do the truck coil conversion (the square ones made by Mitsubishi), here is the list of parts you'll need

Part# 12558693 - coil

Part# 12569188 - bracket

Part# 89017477 - Harness

You'll also need the longer truck plug wires, stock or aftermarket
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Old May 1, 2009 | 06:23 AM
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yup, need the truck plug wires, coils, bracket and miniharness (the one that goes from the big white engine harness connectors to the individual coils).
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Old May 1, 2009 | 09:13 AM
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Why do I need to switch to the truck plug wires? Will the ones I have not reach?

And I ordered the square coils! I guess I will order the mounts and harness today.
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Old May 1, 2009 | 09:19 AM
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From: Cecil County Raceway!!!
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Originally Posted by TrakDay
Why do I need to switch to the truck plug wires? Will the ones I have not reach?
exactly
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Old May 1, 2009 | 09:32 AM
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Getting truck coils is a perfect excuse to fab up a coil relocation kit. It is actually pretty easy and can be done for a $30 + $50 to $60 for custom plug wires
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Old May 1, 2009 | 09:50 AM
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Originally Posted by ls1290
Getting truck coils is a perfect excuse to fab up a coil relocation kit. It is actually pretty easy and can be done for a $30 + $50 to $60 for custom plug wires
Honestly not sure I have anywhere I could even relocate them in my GTO engine bay. It is packed! Plus for now I need to get it running again and then I will worry about that stuff!

Thank for the help guys!
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Old May 1, 2009 | 05:53 PM
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As mentioned, I got aftermarket ls1 fbody/corvette wires and they work fine. Taylor 409' ls1 race wires.
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