LQ4 Swap ?'s 4L60E bolt up???
03-17-2009, 11:18 PM
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LQ4 Swap ?'s 4L60E bolt up???
The truck was originally a V6. Motor blew so the guy swapped in a 5.3 out of an 02. Everything was converted to fly by wire. Now I am swapping to a 2000 LQ4. A couple questions. I tried searching and didn't find a lot of answers. I know that some people say that the 4L60E will bolt up with the removal of a spacer, but some say it won't because of a longer crank. Can someone tell me for sure before I get there. Also, since I am drive by wire now, what can I do for the throttle body? Can I use the one off my 5.3? Also, do I need to modify the harness or does someone make an adapter for the harness? Do I need to use my 5.3 intake also? A little help please. Or would it be easier to just use all of my stock stuff and go buy a harness that was taken off a newer one that had the fly by wire? Just looking for the easiest. Thanks guys
03-17-2009, 11:52 PM
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The 6.0 comes with a harness, but it's for cable throttle. Do I need to get one that's drive by wire because that's what my 5.3 is? Also, still leaves the intake and throttle body question.
03-18-2009, 12:11 AM
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As GMCTrk mentioned, if you're hellbent on this 00 6.0, you're going to have to bolt it up to a 4L80E as it won't bolt up to a 60E. I did once read here something about removing some spacer and it will work, but everything else that I've read through the years contradicts that. The common consensus was always 99-00 LQ4=80E only. If this is the case (I'm not 100% sure anymore due to conflicting reports), then you're going to want the harness from the donor engine that will work with an 80E. If it's a complete engine, use the intake, throttle body, etc. If not, I believe that your 5.3 intake may work, (some have different vacuum fittings by the throttle body than others) and you'll just need a cable throttle body which can be had fairly cheap.
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03-18-2009, 12:16 AM
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As GMCTrk mentioned, if you're hellbent on this 00 6.0, you're going to have to bolt it up to a 4L80E as it won't bolt up to a 60E. I did once read here something about removing some spacer and it will work, but everything else that I've read through the years contradicts that. The common consensus was always 99-00 LQ4=80E only. If this is the case (I'm not 100% sure anymore due to conflicting reports), then you're going to want the harness from the donor engine that will work with an 80E. If it's a complete engine, use the intake, throttle body, etc. If not, I believe that your 5.3 intake may work, (some have different vacuum fittings by the throttle body than others) and you'll just need a cable throttle body which can be had fairly cheap.