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What all do I need to run Holley's coils on each cylinder with the Holley Dominator EFI?
Which main harness (part number) do you have?
 

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Discussion Starter #4
don't have harness yet or ecu yet jut wanted to know what I needed to do it going to purchase soon wanted to upgrade ignition for alcohol and boost.
 

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There was a post not too long ago where someone listed all the harnesses you need to run Dominator and COP .


Anyone have the link ? I could use that again .
 

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Wasnt too hard to find .....lol



You need:
54-114 Dominator ECU
558-200 Harness Injectors
558-105 Harnes main unterminated (104 if you want a V8 terminated)
558-402 Harness AUX J2B (outputs)
558-401 Harness AUX J2A (inputs+wb02#2)
558-308 Harness Power
556-111 BBC Crank Trigger Kit
2pc 554-101 Wideband
538-24 MAP-sensor
9920-107 Air temp sensor
534-10 Coolant temp sensor
554-102 100 psi Fuel
554-102 100 psi Oil
8pc 556-112 CNP Coils
120-00003 Efi connection cam plug

Injectors
Drivers for Nos if you want the progressive
Harness for CNP if you dont make your own. I prefer to make my own on high HP cars as i need more Cable area for these dwell settings.

Best luck!
 

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The Holley 558-307 CNP main harness is for Holley's CNP smart coils and LSx coils.
If using Holley's 556-112 CNP coils, Holley's 558-312 CNP coil sub-harness is also required.
For LSx coils, the Holley CNP main harness plugs right into the two GM 12579355 CNP sub-harnesses.
 

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Discussion Starter #13
its a 540 t106 turbo was a blow through changing to dom efi alcohol. motor made 1640HP with 16lbs boost 6500 rpm talked to mike moran and going to use 1 set of his 500# injectors he said good to 2000 hp.whitch is fine for now internals are only good to 1800 or so any way
 

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Just took the msd 7531 out and changed over to the holley coils. Here is most of the stuff i recall.

You can use your crank trigger and the distributor for cam sync signal. Good idea to swap out your magnetic crank sensor for holley part 554-118. It is a hall effect sensor that will thread in place of the current one. Less chance for any interference using hall effect. Depending on the distributor it may need a slight modification for the cam sync.

The holley coils use a different wire end then the ls coils. They are the hei style end.

Also the power and ground wires feeding the holley coils will need to be 10-12 gauge vs the smaller one provided in the ls coil harness 558-307. Verify coil harness wiring is correct as holley had some harnesses that were incorrect.

Buy your accessory ecm connectors now. You will end up needing them. You can buy 558-408. Comes with connectors and pins. You will need to supply your own wires to crimp the pins too.
 

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It's a 540 T106 turbo, was a blow through, changing to Dominator EFI...
Since it's not an LSx application, you'll need all three parts in post #9.
 

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its a 540 t106 turbo was a blow through changing to dom efi alcohol. motor made 1640HP with 16lbs boost 6500 rpm talked to mike moran and going to use 1 set of his 500# injectors he said good to 2000 hp.whitch is fine for now internals are only good to 1800 or so any way
They will be enough. I use 70% of mine and only on 75psi base pressure. It in the mid 6:s with 1273kg Weight.
 

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Discussion Starter #19
thank you guys for all the info really appreciate it this whole build has been in a two car garage for a few years only thing farmed out was motor and trans every thing else was hand bilt by a friend of mine and a little bit me
 
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