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Old 08-17-2017, 03:45 PM
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Default Holley dbw question

Do all the Holley gurus,

I'm using the part number 550-623(24x setup for truck dbw). I want to change over the throttle body to a vette 90mm dbw unit. Does Holley use a different wiring harness for the gas pedal and throttle body? If they do, does anyone know the part number for the correct harness i need?

Thank you.
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Old 08-17-2017, 05:06 PM
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This will do...

https://www.holley.com/products/fuel.../parts/558-406

Presumably you have a Dominator ECU...

Andrew
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Old 08-17-2017, 09:31 PM
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That should be it. Thank you.

The Holley tech told me all the connectors are the same... he didn't believe that gm made a 8 and 6 pin connector for the throttle body.
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Old 08-18-2017, 07:27 AM
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Quote:
Originally Posted by Jr View Post
That should be it. Thank you.

The Holley tech told me all the connectors are the same... he didn't believe that gm made a 8 and 6 pin connector for the throttle body.
Holley tech isn't optimal for EFI support. To their defense, Holley doesn't sell a DBW harness for the older, 3 bolt TBs separately. It can be bought as part of a Terminator kit, which is how you have yours, I assume.

Andrew
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