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02-05-2016, 07:42 PM
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#1 |
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Registered User
Join Date: Oct 2011
Location: bartlesville ok
Posts: 143
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6.0 with 5.3 harness
I have a 6.0 and harness for 4l80e, I am going to use 4l60e (it was free OK). now I cannot find info on modifying harness to work with the 60 from 80 so I am thinking I can use a 5.3 harness that is already 60e ready. flash PCM with new tranny and other mods to start. anyone done this, and I on the right track? any and all comments/ suggestions are welcome!!
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02-05-2016, 10:02 PM
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#2 |
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Registered User
Join Date: Oct 2011
Location: bartlesville ok
Posts: 143
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Re: 6.0 with 5.3 harness
also let me note they are both 2004 models
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02-05-2016, 10:41 PM
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#3 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 6.0 with 5.3 harness
Yes that will work.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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02-05-2016, 10:43 PM
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#4 | |
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Registered User
Join Date: Oct 2011
Location: bartlesville ok
Posts: 143
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Re: 6.0 with 5.3 harness
Quote:
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02-05-2016, 10:52 PM
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#5 |
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Registered User
Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: 6.0 with 5.3 harness
You will need to make sure they both have the same injector plugs though. A 2004 5.3 could have flex fuel injectors that take different plugs.
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
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02-06-2016, 12:18 AM
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#6 |
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Registered User
Join Date: Oct 2011
Location: bartlesville ok
Posts: 143
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Re: 6.0 with 5.3 harness
I will check that out tomorrow. I don't think that truck had the flex fuel badging though. How can I be sure? does that injector have a different look to it? Thanks for the tip by the way.
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02-06-2016, 09:15 AM
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#7 | |
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Registered User
Join Date: Oct 2013
Location: Alabama
Posts: 1,224
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Re: 6.0 with 5.3 harness
Quote:
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02-06-2016, 10:25 AM
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#8 |
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Registered User
Join Date: Oct 2012
Location: Miami, Florida
Posts: 917
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Re: 6.0 with 5.3 harness
Hello 70inbville. The pig tail or Transmission connector(the Pins) from a 4L80E can be switched to operate 4L60E. The directions are available from
www.Lt1swap.com. I haven't tried it, to see if it works, but im waiting on some other information in reference to the wiring of a 4L60E. Try it out. from LT1swap.com, its only 3 pins in the plug that need to be changed around. I also provide pics of a flex fuel injector and a regular truck intake injector. the connectors, that plug into the regular truck injector is different from the flex fuel injector. preference wise, I like the flex fuel injector because its connector secures itself to the flex fuel injector. the regular truck injector is easy to pull out from the injector. ask me how I know? good luck and tell us how it goes. |
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02-06-2016, 10:38 AM
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#9 |
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Registered User
Join Date: Oct 2011
Location: bartlesville ok
Posts: 143
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Re: 6.0 with 5.3 harness
I have found TONS of info to go from 60 to 80 but nothing the other way around. I have looked at lt1swap and other than tracing from the pcm to the trans harness with each wire I didn't find a "quick" way to do it. I am pretty well set on starting my harness overhaul with the 5.3 harness, and not add headache with trans wiring also. Thanks for the injector pics. Chip
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02-06-2016, 11:50 AM
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#10 |
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Registered User
 Join Date: Mar 2014
Location: Easley SC
Posts: 150
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Re: 6.0 with 5.3 harness
The easiest way to do it is to just get a 4.8/5.3 harness. It will run either motor and will plug into the 60 no problem
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