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09-07-2018, 02:16 AM | #1 |
Registered User
Join Date: Feb 2008
Location: Carson, CA
Posts: 585
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LY6 Swap - Is this the one?
Hey folks, I'm looking to swap a LY6/6L80 into my Suburban, but I need to source the combo from somewhere. I've got my eye on one, but want to get feedback as this will be my first attempt at an LS swap. Here are the details:
LY6 w/2wd 6L80 trans 2008 Chevy Silverado 2500HD (was a street sweeper, not a normal P/U) 150k miles involved in a rollover accident Is this worth buying? Too many miles? What would be a fair price? Any non-negotiable repairs before the swap? Anything I'm not thinking of? Any help is greatly appreciated! I've also attached a video of it running. Here: https://youtu.be/ZS7y9sjQdEU
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69 C10 SWB -- Left to me by a loving father. Finishing the build we never got the chance to do together |
09-07-2018, 07:39 AM | #2 |
Registered User
Join Date: Mar 2017
Location: Edmonton
Posts: 390
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Re: LY6 Swap - Is this the one?
I used a Ly6 for my swap it was out of a van . Had high miles so I freshened up engine put a ls3 intake, Tb and injectors and a bigger cam . Great engine and heads are basically ls3 heads. Yours has low miles I would just drop it in and go
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09-07-2018, 03:28 PM | #3 |
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Join Date: Feb 2008
Location: Carson, CA
Posts: 585
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Re: LY6 Swap - Is this the one?
Looks great! What did you do to freshen the engine and what do you consider high mileage?
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69 C10 SWB -- Left to me by a loving father. Finishing the build we never got the chance to do together |
09-07-2018, 03:39 PM | #4 |
Registered User
Join Date: Mar 2017
Location: Edmonton
Posts: 390
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Re: LY6 Swap - Is this the one?
Mine had over 300 thousand km supposedly. I could not hear it run engine was already out of van. Glad I tore it down one of the main bearings was worn really bad. Polished crank journals, honed cylinders , rebuilt heads. New pistons, rings, bearings , chain . TSP vvt cam, heavier valve springs, the list goes on . I’m doing another swap a 5.3 this time an lower miles in the wife’s truck and I’m not opening this one up drop in an go . I think you’ve verified your engine condition enough I wouldn’t hesitate to just run it as is unless you wanna make some bigger hp
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09-07-2018, 08:26 AM | #5 |
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Join Date: Mar 2012
Location: Woodbury, Ct.
Posts: 1,692
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Re: LY6 Swap - Is this the one?
I love how you can find these engines hiding in all sorts of vehicles. My 2005 LQ4 with an fbody oil pan and manifolds was sitting in an Isuzu box truck. It was T-boned after the owner put a bran new 4l80 in it.
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09-07-2018, 09:25 AM | #6 |
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Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: LY6 Swap - Is this the one?
A street sweeper with 150k miles has probably got a TON of hours on it, so I would check it out good.
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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 |
09-07-2018, 03:26 PM | #7 | |
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Join Date: Feb 2008
Location: Carson, CA
Posts: 585
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Re: LY6 Swap - Is this the one?
Quote:
I did notice some smoke coming from the engine, but that's likely oil burning off from the truck being flipped over. Why would street sweeper 150k be different that anything else? I'd imagine they get driven pretty steady (not a lot of stop and go) and have some type of maintenance crew to keep them on the road? Thanks for all the responses so far, keep them coming!
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69 C10 SWB -- Left to me by a loving father. Finishing the build we never got the chance to do together |
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09-09-2018, 11:59 AM | #8 | |
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Join Date: Dec 2009
Location: Independence Mo
Posts: 4,119
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Re: LY6 Swap - Is this the one?
Quote:
Like I said, it sounds like it runs good, so if you think it will work for you, go for it. I would change a few gaskets, intake, exhaust, and anything that looks like its leaking oil, and run it. No reason to mess with the injectors in my opinion since it sounds like it is pretty smooth running.
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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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09-07-2018, 03:48 PM | #9 |
Almost Satisfied
Join Date: Mar 2002
Location: Springfield, MO
Posts: 2,932
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Re: LY6 Swap - Is this the one?
I know when the street sweeper comes by my house the engine is running high RPMs as he is creeping down the street. Lots of stop and go. These engines are pretty solid and I'm sure it was well maintained being a tax payer vehicle. At the end of the day you have to be comfortable with it. The one I purchased was very clean, but it is still a bit of a gamble no knowing the full history. Just go in with your eyes wide open and expect to spend more money that you thought you were going to.
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1971 C10 Stepside. LSx 6.0 with BTR Stage IV, Speed Engineering Headers, 4L80e transmission w/3200 Circle-D Stall. 3.73. Posi. Purchased this truck when I was 17. I started the rebuild (or take apart) in 1993. I have drug it around all over the country in pieces. Finally back on the road in 2021. "I can't complain, but sometimes I still do. Life's been good to me so far." |
09-07-2018, 05:47 PM | #10 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: LY6 Swap - Is this the one?
The question stuck in my mind.....how did they roll a street sweeper?!?!?><
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
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09-07-2018, 05:54 PM | #11 |
Registered User
Join Date: Feb 2008
Location: Carson, CA
Posts: 585
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Re: LY6 Swap - Is this the one?
i wanna know too!!! Lol
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69 C10 SWB -- Left to me by a loving father. Finishing the build we never got the chance to do together |
09-07-2018, 07:44 PM | #12 |
1965 Chevy C10, 2005 4.8L/4l60
Join Date: Aug 2004
Location: DFW Texas
Posts: 8,546
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Re: LY6 Swap - Is this the one?
I would think very very slowly!
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 support our troops! |
09-08-2018, 09:26 AM | #13 |
Senior Member
Join Date: Feb 2014
Location: new smyrna beach fl / 29 palms cal
Posts: 1,727
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Re: LY6 Swap - Is this the one?
All the street sweepers that I have seen do not use the engine in the truck but a standalone engine to run the sweeper and vacuum
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09-09-2018, 10:36 PM | #14 |
All about them K’s
Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,490
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Re: LY6 Swap - Is this the one?
I’ve got one going in my K20. Sounds like it could be a good deal to me. Personaly I think the ly6 is a gem that is often over looked. Ls3 heads, vvt, and the beefier gen 4 rods. They are ready to handle as much power as you want to throw to them, want a high lift cam? Delete the vvt and run an ls 3 spec cam and springs. There are serveral unique options with this motor and they are usually pretty reasonably priced compared to the car engines. If it were me I’d pull the pan and make sure everything looks good, slap some new gaskets and seals on it and let it eat if it all looks good. I personally like to know exactly what I have on my hands with a used engine.
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Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s |
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