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How hard to swap a 6.0 in a 5.3 truck???

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Old 05-18-2007, 09:16 PM
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Default How hard to swap a 6.0 in a 5.3 truck???

In my "how to build chevy ls1/ls6's" by Will Handzel, it says that pulling your 5.3 and putting in a 6.0 (lq4) is described as the "easiest motor swap ever". It says the two blocks are externally almost identical and everything will bolt right up to the LQ4 and only a little tuning is required if any for it to work. Someone please tell me this is true. Can a 6.0 be bolted to the 4L60 and hookup up to the 5.3 ecu and actually run?
Old 05-18-2007, 09:24 PM
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we wouldn't know. No one has EVER swapped to a 6.0 nor have they ever asked questions about it......


Seriously bro, use the search.
Old 05-18-2007, 09:25 PM
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True.
Old 05-18-2007, 09:31 PM
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yes it is true.
the 4L60E and pcm will work also.
Old 05-18-2007, 10:05 PM
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Takes about a day. Depending on the level of going on.

Everything is a direct fit.
Old 05-18-2007, 10:15 PM
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Yea, its quick swapping any 3rd gen actually in these trucks.. They are nearly identical externally, just swap it and retune the PCM.

-Lurius
Old 05-19-2007, 05:10 AM
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Just make sure the year of the motor and the transmission will mate up. Early 6.0's have the longer crank or something so that they'll only bolt to a 4l80 but as long as you get an 01 and up motor you'll be fine. Someone correct this if need be
Old 05-19-2007, 05:42 AM
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just swap it and make sure to use your 5.3 flywheel...
Old 05-20-2007, 10:46 AM
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which 6.0 is rated at 345hp and which is rated at 367hp? ls1 is 350hp right? what are tq numbers for all of em
Old 05-20-2007, 10:58 AM
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I drove mine around for about 2 weeks with the 5.3 tune still in it with no problems. As mentioned above, make sure it's a 2001-up 6.0 that came with the aluminum heads. The earlier ones with iron heads had a different crank and will not work with the 4L60E.


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