LS series engine swap - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 32 Old 02-20-2011, 12:54 PM Thread Starter
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LS series engine swap

Anyone out there selling kits with mounts and harness for a LS series engine swap? I am going to make a move shortly on my '07 2 dr either a RIPP or bite the bullet and do a swap but Im not interested in a HEMI. Any help is always appreciated.
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post #2 of 32 Old 02-20-2011, 01:04 PM
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post #3 of 32 Old 02-20-2011, 01:48 PM Thread Starter
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Thanks

Thank you. I checked out their website and it says they have a kit in the works. I emailed them so should here something soon.
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post #4 of 32 Old 02-20-2011, 05:35 PM Thread Starter
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heard back from jeep speed shop he said they are working on a kit for LS series engines but that it is going slow.
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post #5 of 32 Old 02-21-2011, 06:24 AM
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So what would be the price of the kit be? I would love to put a L92 in my JK.
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post #6 of 32 Old 02-21-2011, 01:10 PM Thread Starter
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@ Luke

didnt get a price but maybe if they get enough calls and emails they will hurry up!!! As soon as a practical kit to install small blocks is released the Hemi swap market will change, in a big way. Im starting to shop for a good used drop out engine from a late model vette or GTO. sorry but screw $20,000 hemi swaps when i can get a better engine for half the price. Besides isnt figuring all this stuff out half the fun!!
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post #7 of 32 Old 02-21-2011, 01:12 PM
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Im with you, im lookin at the 5.3 out of one of the trucks.

Drive fast over bumps
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post #8 of 32 Old 02-21-2011, 01:17 PM Thread Starter
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Xtreme 4x4 aired an excellent episode on LS engines for off road use. They break down the differences in the engines. very good info in that episode. I DVRed it I think its available on netflicks and itunes.
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post #9 of 32 Old 02-21-2011, 01:36 PM
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Quote:
Originally Posted by LSU-JK View Post
sorry but screw $20,000 hemi swaps when i can get a better engine for half the price. Besides isnt figuring all this stuff out half the fun!!
20K is for a brand new engine/trans with labor performed by someone else so comparing it to from what I understand you describing as a self performed used engine swap is unfair.

People who have done the hemi swap themselves havent gotten away with it for around 10K. I dont think you can do an LS swap for much less than that.
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post #10 of 32 Old 02-21-2011, 05:54 PM
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LS in a Jeep JK

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Originally Posted by Luke M View Post
So what would be the price of the kit be? I would love to put a L92 in my JK.
We are working on a kit and we can put a Chevy engine in a JK, but the problem is the bridge we are building to link the to.
We are on to something but we need more data stream info to the JK dash and we will have it, if you no any one that can help me i will help you.
We are close and i can see putting a Chevrolet engine in a JK on the Cheap.
Thanks Todd
www.jeepspeedshop.com
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post #11 of 32 Old 02-21-2011, 06:04 PM Thread Starter
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nice!!

@ JSS. I would be willing to help out in any way i can. I do not have the engine yet. I am seriously starting to look for the right deal now. cheers!
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post #12 of 32 Old 02-22-2011, 09:33 AM
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JSS, I know I was reading on your site about only the speedo and tach working and nothing,

Have you ever considered giving AEM a call and see if they a EMS that would work? I mean the tuner guys do it all the time and they can tie into factory equipment.

You might be able to run a dual ECU setup. I know some of the mitsubishi guys I used to run with would run this setup when running a turbo engine with auto trans.

I dont remember which JK forum it was, but there was a successfull LS engine swap running dual ECU's.
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post #13 of 32 Old 02-22-2011, 07:19 PM
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LS in a JK

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JSS, I know I was reading on your site about only the speedo and tach working and nothing,

Have you ever considered giving AEM a call and see if they a EMS that would work? I mean the tuner guys do it all the time and they can tie into factory equipment.

You might be able to run a dual ECU setup. I know some of the mitsubishi guys I used to run with would run this setup when running a turbo engine with auto trans.

I dont remember which JK forum it was, but there was a successfull LS engine swap running dual ECU's.
We could do that but i'm going to try it this way first, we have done that with the TJ.
i talked to AEM and they did not have any info, all i need is the info for the dash on the JK and I'm in.
I think this is the best way to do this and the cleanest it is just a matter of time, we get this and it is on
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post #14 of 32 Old 02-26-2013, 12:39 PM
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Well, let me know when you get it figured out - I'll be a test mule if you need

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post #15 of 32 Old 02-26-2013, 12:54 PM
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Re: LS series engine swap

This thread is 2 years old lol its been out.

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post #16 of 32 Old 03-07-2013, 06:43 AM
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LS/HEMI in a JK

We have a kit now, we have been working on this for a while. This started in 2009.

["jeep speed shop The GuineaPig Build"]
Chevrolet LS Conversions/Hemi Conversions

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7911 Redwood Dr, Cotati, Ca. 94931
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post #17 of 32 Old 03-19-2013, 10:39 AM
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I just sent ya a somewhat detailed email. Would like to find out more about the optional LS engines / Transmissions for the JK. Perferably for a 2011. I'm probably going to buy a wrecked or Salvaged 4 dr. and straight build it up from complete tear down.

Would using the stock wiring/computer/brain be easier than ditching it?

And pics or info on this transmission mount option?

Thanks again for your progressive thinking in the jeep world for a better engine swap.

Current project jeep 08' wrangler 2dr
Past jeep:
- 07' Rubicon 4 dr, RAMICON- 3.5" ROCK KRAWLER Coil-Over lift
- 5.38 gears- Gusseted/Trussed/inner sleeved
- 40" Pro Comp X-Terrain

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post #18 of 32 Old 03-19-2013, 02:58 PM
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My buddy just did a LS7 swap into his 07' rig. Here in Californiastan it's a bit of an ordeal to get all the stars in alignment to get it done and legal. He recommends getting a complete motor, tranny, and wiring harness out of a half ton truck and swapping it over. Make sure to get the VIN off the truck you're pulling from. The Ref will want it when he/she has to do a workup on the Jeeps new heartbeat. There's a lot more to it. I'm just gathering data and parts as of now so when my 3.6 takes a dump I can make the transition as painless as possible.
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post #19 of 32 Old 03-19-2013, 03:11 PM
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Re: LS series engine swap

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Originally Posted by XratedJK View Post
My buddy just did a LS7 swap into his 07' rig. Here in Californiastan it's a bit of an ordeal to get all the stars in alignment to get it done and legal. He recommends getting a complete motor, tranny, and wiring harness out of a half ton truck and swapping it over. Make sure to get the VIN off the truck you're pulling from. The Ref will want it when he/she has to do a workup on the Jeeps new heartbeat. There's a lot more to it. I'm just gathering data and parts as of now so when my 3.6 takes a dump I can make the transition as painless as possible.
We have over a dozen LS JK's registered in CA, if you need any help give us a call.
Lml

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3045 N Lamb Blvd, Las Vegas, NV 89115
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post #20 of 32 Old 03-19-2013, 07:11 PM
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We have over a dozen LS JK's registered in CA, if you need any help give us a call.
Lml
MoTech , I have a 2013 JKUR Auto , I am interested in putting the 6.2 LS in mine , since i have the W5A580 Auto , would I have to still change my tanny or could the LS be adapted to it ?
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post #21 of 32 Old 03-20-2013, 06:39 AM
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MoTech , I have a 2013 JKUR Auto , I am interested in putting the 6.2 LS in mine , since i have the W5A580 Auto , would I have to still change my tanny or could the LS be adapted to it ?
Pretty sure you will have to (and want to) change to the 6l80. The only way to preserve that trans is doing a hemi swap.
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post #22 of 32 Old 03-20-2013, 07:36 PM
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Re: LS series engine swap

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MoTech , I have a 2013 JKUR Auto , I am interested in putting the 6.2 LS in mine , since i have the W5A580 Auto , would I have to still change my tanny or could the LS be adapted to it ?
The A580 is a step up from the 545RFE and a big step up from the 42RFE; however, the A580 is a step down from the 6l80.

The 6l80 is a modern clutch to clutch low friction transmission. It has a 4:1 low 1st gear vs the 42RFE's 3:1. The 6l80 has two true overdrives ending in. 667.

The 6l80 can handle over 800 ft lbs of torque and is readily available. The 6l80 is networked (can) for optimal functionality of cruise control, rpm match shifting, tap shift and more. The 6l80 is adaptive (learns) how you drive. The 6l80 is easily programmed and the same transmission can be programed to push a Cadillac or run the mile.

The 6l80 is somewhat the magic transmission. Any more gears (7-9) are unnecessary IMHO with a large vvt petrol engine, which has a wide torque band. Diesels and small engines can benefit from more gears.

GM has the software figured out which helps and if you don't like it tuning is easy.

I know (and help) guys trying to make the 6l80 stand alone so it can be used in other apps such as the SBC, BBC and Hemi. It's tough though because the 6l80 TCM is married to the Gen IV ECM. IAT changes 1 degree and so does shifting.

So my long winded answer is no with an LS you can't run the A580, but you will be better off for it.

BTW we have customers go with an LS just to get the 6l80. And when I follow up with a customer after a swap they usually comment how awesome the transmission is.

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3045 N Lamb Blvd, Las Vegas, NV 89115
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post #23 of 32 Old 03-21-2013, 05:48 AM
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I am loving my 6L80E married to 6.2 LS3. I am using Motech complete kit and extremly happy with it.
If you are thinking of doing a chevy engine conversion you should not think of any other tran expect 6l80e. You will get real benefits out of the chevy conversion. And its not expensive in the grand schema of engine conversion
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post #24 of 32 Old 06-19-2013, 02:50 PM
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So any manual tranny is out of the picture? I would hate to give up a manual!
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post #25 of 32 Old 06-19-2013, 02:54 PM
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So any manual tranny is out of the picture? I would hate to give up a manual!
They support manual transmissions


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