LSA engine harness rework
 

Can you guys give me some recommendations on reworking a factory LSA harness to use in my 1960 Impala.

Attachment 71653

I'm currently stuffing an Art Morrison chassis under it and had been running a 24x 0411 ecm with a speed density tune. I'm going to swap the crank to a 58x and would like to run the E67 ecm and harness that I have out of my Road Race CTS-V

Obviously I'd like a quality harness rework with a nice sealed fuse box

Thanks for the help

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Are you looking to rework it yourself or farming it out to someone?

I'd prefer to have someone else do it.

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Speartech does a nice job on reworks.

Don

I am going to have speartech do mine also. Seemed real knowledgeable

X3 for speartech, sweet ride!!

Hey,
nice to see you over here, didn't know you had a sweet Impala. Speartech would get my vote.

Any pro or cons if I went with the GM Performance LSA harness instead?

I like the sealed fuse box and price wise it's comparable to a rework since I have the pedal, o2's and MAF already.

Thanks for the replies

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I've used Speartech and HotWire, both excellent results.


Jeff-

If you decide to use the harness and ECM the fuel requirement is a bit odd. We have the fix for that when using a GM ZL1 fuel module (the best.)

https://www.vaporworx.com/product/pr...-level-sensor/

Back when I would pay someone to do that, there was (still is, I think) a guy I used on Ebay named something like CookMike222 in SoCal who did both the harness rework and the initial PCM re-program for my Falcon's engine. His price was very good (way better than those mentioned above, like less than 50%), as was the work he did. You just have to ship him your junk in a box, with a list of your parameters.

If you know somebody with HPTuners, you can do a basic reprogram in like 15 minutes or less. People have made careers out of this . . .

I'm using a GM harness for one of their crate engines on my custom Gen IV LSA-like engine in my '66 Chevelle. GM sells one specifically for their LSA crate engine. It hooks up to all of the sensors and requires only ground, switched and unswitched +12VDC. It has relayed outputs for fans and a fuel pump. Definitely go with the VaporWorx fuel system that CarlC recommended. That harness and fuel system have been completely reliable for me for years now and I highly recommend them!