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LS 6.0 conversion

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Old Aug 21, 2012 | 03:10 PM
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dmbtrav001's Avatar
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From: orange county, CA
Default LS 6.0 conversion

hello all,
I have a 6.0 LQ4 engine that I am transplanting into an old truck. Planning on using a cable operated throttle body, a full manual 4l80e trans, and do not have to worry about emissions at all. I have a stock ecm and harness out of the matching donor truck. I know that I will need program the ecm with something like HP tuners. My question is what do I need to do to the stock harness to use it in my new application. I have read posts about removing some connectors that are no longer needed but do not know for sure. some help in the correct direction would be greatly appreciated. thanx
travis
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Old Aug 21, 2012 | 04:09 PM
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Originally Posted by dmbtrav001
hello all,
I have a 6.0 LQ4 engine that I am transplanting into an old truck. Planning on using a cable operated throttle body, a full manual 4l80e trans, and do not have to worry about emissions at all. I have a stock ecm and harness out of the matching donor truck. I know that I will need program the ecm with something like HP tuners. My question is what do I need to do to the stock harness to use it in my new application. I have read posts about removing some connectors that are no longer needed but do not know for sure. some help in the correct direction would be greatly appreciated. thanx
travis
Get yourself a harness schematic for the year/model of harness that you are going to be using. Additionally, If you plan on having the PCM located under the hood...by the front of the left fender, use a truck harness schematic. If you plan on having the PCM under the hood close to the passenger side firewall, use a schematic for an F-body harness and build it to that. You'll be stripping out things like rear o2s,air pump,egr,purge, etc from the harness that you'll not have a use for. Basically, you'll be making a new harness.

You don't have to go with a full-manual valve body to control a 4l80e, as the PCM can easily handle it....but that's up to you.

Things to take into consideration; 1) What style injectors are you using (connectors will vary), 2) What AFM will you be using (again, connectors will vary) 3) What fuel rail/intake will you be using (plumbing will vary, as will injectors).

That's it, for starters....
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