GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

5.3 to 6.2???

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Old 05-16-2014 | 01:37 PM
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Default 5.3 to 6.2???

My brother in law has been thinking about swapping out his 5.3 for a 6.2 truck/SUV engine. His truck is a 2010 with a 6speed automatic. Is it as simple as swapping the engines and a retune? Will his wiring harness and computer work and plug into everything on the 6.2 or will he need to get a harness and computer with the 6.2? Will the front drive accessories swap over or will he need those also?
Old 05-16-2014 | 04:02 PM
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Pull out 5.3 drop in 6.2 and retune it no other mods needed. Its same as pulling out a 305 and dropping in a 350 EVERYTHING is identical.
Old 05-16-2014 | 04:23 PM
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Easy as a ****
Old 05-17-2014 | 07:53 AM
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That's what I was thinking. I didn't know if injector plugs or sensors plugs were different. Sounds like a straight forward job. Is the intake the same as well? Thanks

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Old 05-18-2014 | 10:07 AM
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I would just use all the stuff off the truck and swap it onto the 6.2
Old 05-18-2014 | 11:20 PM
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I don't know if you have motor or not yet but from I have seen in the past a salvage yard motor even with higher mileage is within a grand to 1500 of a fresh crate motor. So depending on prices you've seen the last L92 I priced was around 4500 if my memory serves me right and has a 3 year 100K mile warranty.
Old 05-19-2014 | 10:53 AM
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That swap is gonna be well worth it the first time he hits the go pedal. I had an 09 ltz cc with the 5.3 engine and the 6speed tranny with 3.42's and factory 20's. I test drove a Denali and I was sold. I traded that lil 5.3 in so fast I cant hardly remember what they gave me for it. lol
Old 05-30-2014 | 08:21 PM
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thats good to hear iv been thinking of this swap for my 2012 as well, tried to buy a new 14 with a 6.2 but gm in its wisdom did not put the 6.2 in the regular cabs again.
Old 05-31-2014 | 09:29 AM
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No we haven't got an engine yet. At first he wanted to supercharge his 5.3, but then started to think about the 6.2. I like the 6.2 idea a lot better because we could put a stock reliable 6.2 in (he already has long tubes and cold air) then retune it. He is currently on blackbear autocal, and it should haul ***.
Old 05-31-2014 | 08:27 PM
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PLUS I get his 5.3 for doin the swap lol.


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