Holley main haress - Buy the pre-made or unterminated for LS Swap?

[Larry Callahan]

Has anyone ever used the per-terminated wire harness on an LQ4?

Long ago I bought an unterminated wire harness 558-105 (https://www.holley.com/products/fuel_systems/fuel_injection/hp_efi/hp_harnesses/parts/558-105) and injector harness 558-204 (https://www.holley.com/products/fuel_systems/fuel_injection/hp_efi/hp_harnesses/parts/558-204) for another project. For an LS Swap I am doing in my wives Bel Air I am thinking about the Holley that is already complete to save a lot of time.

I am wondering how well they fit with the 6.0 with the truck manifold?


https://i.hmjimg.com/images/2020/06/05/2020-03-29-11.15.45.md.jpg (https://www.hostmyjunk.com/image/VvcfT)

[andrewb70]

They fit fine. Are you doing a Dominator or Terminator X?

Andrew

[Larry Callahan]

They fit fine. Are you doing a Dominator or Terminator X?

Andrew

Glad to hear. I am running a Dominator.

I will probably just sell the ones that I have to buy the ones I need. I really really don't want to spend the time doing it almost from scratch.

[ryeguy2006a]

Probably too late to reply, but one thing I found with the pre-terminated kit is a lot of extra wire length. I'm in the middle of swapping my Camaro from an LS1 over to LS3 and I'm taking the opportunity to tidy up the extra lengths of wiring. The longest one was the wideband wiring. It had about 2' of extra length.