LT4 Wiring harnes

[DKz Garage]

Looking for some input on the best place to buy a ECM and wiring harness for my LT4 crate engine. GM is out of stock countrywide on these, with no ETA?? That being said, I was wanting to do the GMPP kit as it has everything...gas pedal, O2 sensors, ECM, Harness with fuel controller. TIA for any input/advice.

[andrewb70]

Looking for some input on the best place to buy a ECM and wiring harness for my LT4 crate engine. GM is out of stock countrywide on these, with no ETA?? That being said, I was wanting to do the GMPP kit as it has everything...gas pedal, O2 sensors, ECM, Harness with fuel controller. TIA for any input/advice.

Speartech is a good, reputable option.

Also, Holley has a new LT4 accessory drive system that packages much better than the OEM accessories.

Andrew

[Schwartz Performance]

GM's ETA last I checked, was mid march.

Speartech is the only other good option as Andrew stated, but they're 6-8 weeks usually.

-Dale

[DKz Garage]

Speartech is a good, reputable option.

Also, Holley has a new LT4 accessory drive system that packages much better than the OEM accessories.

Andrew


GM's ETA last I checked, was mid march.

Speartech is the only other good option as Andrew stated, but they're 6-8 weeks usually.

-Dale

Thanks for the input guys.... Speartech seems to be a good option. I saw the Holley Drive kit....looks like a nice set-up.

[DKz Garage]

Has anyone used Current Performance Wiring for their LS / LT swap? If so, thoughts??

[65 drop top]

Check out psiconversion.com it looks like they have the harness, not sure if its a complete kit or not, but worth a call.

[DKz Garage]

GM's ETA last I checked, was mid march.

Speartech is the only other good option as Andrew stated, but they're 6-8 weeks usually.

-Dale

Thanks Dale..... I see that you are a Holley Dealer...do you stock any of their parts?? Oil pan/engine mounts for LT4??

Dave

[csouth]

Has anyone used Current Performance Wiring for their LS / LT swap? If so, thoughts??


I used Current Performance when I first did my LS swap. Great quality and I would definitely consider them when doing a swap. The only reason I don't have it now is I switched to Holley.