LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

LS2 In A Thirdgen Help

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Old 02-25-2008 | 02:22 AM
  #1  
Grifter757's Avatar
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From: Va beach
Car: 87 IROC,
Engine: 370 LSx With Boost
Transmission: 4L80E
Axle/Gears: S-60 with 3.50s
LS2 In A Thirdgen Help

Well I have a good deal on a wrecked complete 05 GTO. I'm just wondering how hard it'll be for this swap as opposed to an LS1 swap. I'm nit sure if I would like to use the DBW. How much will i be able to use of the car. I know I need the Camaro oil pan, motor mounts and tranny cross member. I'm just not sure if it would be easier to get a complete Fbody drive train or just use this and modify the few peices. Who has actually done a comeplete swap. Thanks I searched but am hopeing for a little more info. Thanks
Old 02-25-2008 | 10:04 AM
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From: stockton, CA
Car: Camaro RS/SS
Engine: 5.7 LS1
Transmission: 4L60E Transgo shift kit, 3500 stall
Axle/Gears: 4th Gen Rear 3:42
Re: LS2 In A Thirdgen Help

I did a Ls1 Swap into my 89 camaro. I think it would be the same as the LS1 to bolt up using all the correct parts. As far as the wiring.... you may need to call speartech. they might be able to help you. Good luck
Old 02-25-2008 | 12:08 PM
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From: Republic of Texas
Engine: LS2
Transmission: T56
Axle/Gears: Moser Ford-9, 3.50
Re: LS2 In A Thirdgen Help

It's not that different. Since it sounds like you've got a donor car, you'll have almost everything you need (keep the harness, ECM and sensors). It'll mount in the car the same way an LS1 would, so use the k-member/motor mount tips you'll find here.

If you don't want the DBW then buys a cable throttle body, but you'll need an F-body or '04 GTO ECM. This is where it could get tricky with the sensors, you need to know which reluctor wheel is in the engine and then the sensor plug on the harness needs to match.

I don't think a DBW conversion would be that hard, since you have the GTO. There are already tips on here for installing the pedal. LS1tech has a conversion forum too, you'll find more info there.
Old 09-06-2009 | 04:17 PM
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From: Monterey Park,Ca
Car: 1988 Firebird Formula WS6
Engine: LO3 305 tbi
Transmission: 700 R4
Axle/Gears: 3gen housing zexel torsen posi 3.42
Re: LS2 In A Thirdgen Help

A10Beav's car holy **** its sweet

http://www.highperformancepontiac.co...ine/index.html
Old 09-07-2009 | 08:21 AM
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From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: LS2 In A Thirdgen Help

nice article, congrats, swap looks great!
Old 09-07-2009 | 09:44 AM
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From: 39.84N 105.11W
Car: '89 Trans Am GTA
Engine: WAS 350 - now L92 (alum. 378/6.2L)
Transmission: WAS 700R4, now a built T56
Axle/Gears: 3.27 9-bolt
Re: LS2 In A Thirdgen Help

From everything I've read, swapping in the DBW system makes cruise control a piece of cake - you can pitch the ugly thirdgen pieces into the woods since now it's all electronic. And mounting the DBW throttle pedal wasn't real hard for me either.
Old 09-07-2009 | 07:11 PM
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Re: LS2 In A Thirdgen Help

It will be the same as an ls1 for the most part. I did and LS2 with DBW and it worked just fine. Cruise is great and the throttle body looks good under the hood. I did a 24 tooth reluctor so I could run the LS1 PCM as it has great control with efilive. Contact www.eficonnection.com for your harness. It sucks trying to use a stock harness and make it work with your f body third gen.
Old 09-08-2009 | 02:55 PM
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From: Republic of Texas
Engine: LS2
Transmission: T56
Axle/Gears: Moser Ford-9, 3.50
Re: LS2 In A Thirdgen Help

Originally Posted by FireTurdWS626
Originally Posted by 1A Dan
nice article, congrats, swap looks great!


Unfortunately, that LS2 died two months ago. A rod broke and two pistons came apart, the block and all internals were damaged as well
It took a few weeks to get a replacement, but it's now getting an LS2 402 from TSP, with a few upgrades over the original conversion. Hopefully I'll get to drive it again before winter.
Old 09-08-2009 | 03:35 PM
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From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: LS2 In A Thirdgen Help

wow, sorry to hear about the bad news.

sounds like you took it as a good excuse to upgrade too
Old 09-09-2009 | 12:40 PM
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From: Republic of Texas
Engine: LS2
Transmission: T56
Axle/Gears: Moser Ford-9, 3.50
Re: LS2 In A Thirdgen Help

Yea, it became upgrade time. Now I wish I had done this in the first place!
Old 08-03-2011 | 05:48 PM
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From: Stockton, CA
Car: 1991 Camaro RS TBI Convertible
Engine: V8 305 5.0
Re: LS2 In A Thirdgen Help

Originally Posted by Ramair21
I did a Ls1 Swap into my 89 camaro. I think it would be the same as the LS1 to bolt up using all the correct parts. As far as the wiring.... you may need to call speartech. they might be able to help you. Good luck
hows you doing fellow stocktonian, well im back trying to get an idea on where to start i wana do the ls2. would you be able to show me your setup to get an idea? pm me if possible . thanks again RAMAIR21
Old 08-04-2012 | 04:18 AM
  #12  
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From: Ca
Car: 1989 Firebird (Originally V6)
Engine: 400+ horse 355 (hopefully)
Transmission: 700R4 Built for 500+ HP/TQ
Axle/Gears: stock 2.8 V6 axles and gears
Re: LS2 In A Thirdgen Help

A10Beav,

I noticed in the article that you relocated the A/C compressor. Otherwise, did you use the stock GTO pulley setup, a Corvette setup, or an LS1 Camaro setup?
Old 08-04-2012 | 06:28 AM
  #13  
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From: Republic of Texas
Engine: LS2
Transmission: T56
Axle/Gears: Moser Ford-9, 3.50
Re: LS2 In A Thirdgen Help

The A/C compressor and bracket are from Street and Performance: http://hotrodlane.cc/. I think the catalogue has changed, but look under the LS section and I think it's part of a kit, but you can buy the parts individually.
Old 08-05-2012 | 03:33 PM
  #14  
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From: Ca
Car: 1989 Firebird (Originally V6)
Engine: 400+ horse 355 (hopefully)
Transmission: 700R4 Built for 500+ HP/TQ
Axle/Gears: stock 2.8 V6 axles and gears
Re: LS2 In A Thirdgen Help

A10Beav,

Thanks for your reply. I was actually more concerned with which pulley setup (excluding the A/C compressor) you used. I am putting an LS2 from an SS Trailblazer in my Firebird. Unfortunately the pulley setup from that application is a truck setup and will not fit in the 'bird. So is it safe for me to assume that the GTO pulley setup minus the A/C compressor fits in the engine bay without modification to either the car or the engine? Thanks for you help.
Old 08-05-2012 | 03:54 PM
  #15  
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From: Republic of Texas
Engine: LS2
Transmission: T56
Axle/Gears: Moser Ford-9, 3.50
Re: LS2 In A Thirdgen Help

Ok, I have all GTO accessories, except for the A/C. So yes, that will fit.
Old 08-05-2012 | 04:10 PM
  #16  
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Joined: Dec 2005
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From: Ca
Car: 1989 Firebird (Originally V6)
Engine: 400+ horse 355 (hopefully)
Transmission: 700R4 Built for 500+ HP/TQ
Axle/Gears: stock 2.8 V6 axles and gears
Re: LS2 In A Thirdgen Help

Thank you very much. I greatly appreciate the help, and FAST replies.
Old 08-06-2012 | 05:03 PM
  #17  
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From: Republic of Texas
Engine: LS2
Transmission: T56
Axle/Gears: Moser Ford-9, 3.50
Re: LS2 In A Thirdgen Help

No problem and good luck with the build!
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