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.

My 1989 IROC LS1/4L60E swap

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Old Sep 19, 2014 | 01:39 PM
  #301  
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Re: My 1989 IROC LS1/4L60E swap

Nice .. I hate to see a wavy fascia on an otherwise perfect car.
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Old Sep 19, 2014 | 02:29 PM
  #302  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Originally Posted by ch@0s
Nice .. I hate to see a wavy fascia on an otherwise perfect car.

Far from perfect bro but thanks
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Old Sep 19, 2014 | 06:09 PM
  #303  
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From: Lincoln, NE
Car: 86 Iroc-Z28
Engine: 5.3
Transmission: 4l60
Re: My 1989 IROC LS1/4L60E swap

How much that bumper run you
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Old Sep 20, 2014 | 12:15 PM
  #304  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Right at $300 with tax
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Old Sep 20, 2014 | 03:40 PM
  #305  
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From: Lincoln, NE
Car: 86 Iroc-Z28
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Re: My 1989 IROC LS1/4L60E swap

From dealership?
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Old Sep 22, 2014 | 01:20 PM
  #306  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Yes.
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Old Nov 14, 2014 | 07:38 PM
  #307  
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Re: My 1989 IROC LS1/4L60E swap

UPDATE, how's in coming
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Old Nov 15, 2014 | 03:47 PM
  #308  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

I did get some other goodies.
My new 120A alternator. It solved my pulsing lamp issue and I swear the car runs better


Also found a guy in Washington that had these rocker emblems. I bought red ones as well. We will see which color works best with the paint.


And lastly got my Koni Yellows in. The rears are installed, Just waiting to get the fronts installed and swap front springs again.



Also snagged this BRAND NEW dash Face!



Other than that, Still saving for paint.

Last edited by jazzdadss; Nov 15, 2014 at 04:12 PM.
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Old Nov 16, 2014 | 11:47 AM
  #309  
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From: Jackson, MO
Car: 1989 Camaro IROC-Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 9 bolt posi w/ 3.42s
Re: My 1989 IROC LS1/4L60E swap

Originally Posted by jazzdadss
Got a little more done today (avoiding wiring). Got the A/C bracket on and P/S on. Got the bracket assembly from Holley through Summit Racing. It worked out good I guess. I just wish the A/C lines were not all on the fender well..

Oh well, Pics of progress.









I am thinking about ls swapping my 89 IROC and was wondering how much that a/c bracket and power steering bracket was and how you found it on summit. Thanks.
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Old Nov 16, 2014 | 12:31 PM
  #310  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

The AC bracket and adaptor were all I bought. The PS and everything else is all stock 98 Camaro LS1.
Just search the part numbers in the pic on summits web site and read the instructions. It will lead you to the correct adaptor bracket for whatever water pump and stuff you are using. The bracket, Adaptor, Two extra pullys and belt ran right at $300.00
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Old Nov 16, 2014 | 01:15 PM
  #311  
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From: Jackson, MO
Car: 1989 Camaro IROC-Z
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 9 bolt posi w/ 3.42s
Re: My 1989 IROC LS1/4L60E swap

Originally Posted by jazzdadss
The AC bracket and adaptor were all I bought. The PS and everything else is all stock 98 Camaro LS1.
Just search the part numbers in the pic on summits web site and read the instructions. It will lead you to the correct adaptor bracket for whatever water pump and stuff you are using. The bracket, Adaptor, Two extra pullys and belt ran right at $300.00
Thanks! im trying to build a cost list for the swap to make sure I can afford this without being more broke than I already am lol
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Old Aug 15, 2015 | 10:39 AM
  #312  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Howdy Fellas, I havnt been here in a while and had a question.
As far as the factory tachometer in the 89 Iroc, What are the diferent methods to getting it to work with the LS? I sent mine off to a guy in Louisiana to have it fixed and when I got it back I found that it only reads 50% of the signal. Come to find out, The LS V8 signal is the same as a 4 Cylinder. So that makes sense. Question is, Are there any other solutions to getting the factory tach to work?
I have looked at the DIP Switch box that is sold by Abbotts.

http://www.atrol.com/order.htm

This little box (an ERA) costs $180.00. Are there any other alternatives? Thanks as allways.
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Old Aug 15, 2015 | 05:34 PM
  #313  
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Re: My 1989 IROC LS1/4L60E swap

Change the output in the tune. Stock is 4cyl, can be switched to 6cyl or 8 cyl with the click of a button
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Old Feb 2, 2016 | 10:27 PM
  #314  
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From: Northern California - Bay Area
Car: 1988 IROC-Z
Engine: L98 - full intake & exhaust boltons
Transmission: Bowtie 700r4, 2400 rpm stall
Axle/Gears: Borg-Warner 9bolt, 3.45 gears, posi
Re: My 1989 IROC LS1/4L60E swap

Nice build. Any updates?
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Old Feb 4, 2016 | 07:03 PM
  #315  
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From: Bella Vista, AR
Car: 1991 Camaro Z28
Engine: LS Conversion
Transmission: 4L60E
Axle/Gears: Stock for now...
Re: My 1989 IROC LS1/4L60E swap

Originally Posted by jazzdadss
Started putting the LS together and Well, seems either the books are wrong or the torque wrench is off. Got the oil pump on and .002 gap around the shaft and wouldnt you know it!!! The books call for 18 ft lbs on this little bolt that holds the oil pump pick up tube to the pump. I may have gotten 10-11 lbs and snap!! Figures!


This same thing happened to me while I was changing out a transmission filter. Barely twisted it on there and SNAP. As I was drilling it out, I also got a metal shard in my eye and had to go get it carved out. Needless to say it wasn't fun. Sad part, is I was wearing safety glasses. I think it was stuck to my shirt or something....
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Old Apr 7, 2016 | 04:46 PM
  #316  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Metal in your eye is never good, I hope you healed ok.
No real updates on the Rock. haven't had much time to tinker. Have been taking it to a few body shops but they are nuts! 10K + to paint the car 3 stage Ruby Red. In my frustrations in trying to find a good but reasonable body shop I think I may hold off on finishing it for a few years. Some things are just not working out and we may need to find a new House. Which means The money that I had saved for paint may need to go towards a down payment on a house. Not the way I wanted this to go down but if I do that I will have a garage so That's a perk!
We'll see what the future holds and someday RubyRock will be complete.
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Old Jan 7, 2018 | 02:44 PM
  #317  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Wow! It's almost been Two years since I have seen this post. LOL!
Howdy Yall! Still working on house.
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Old Sep 25, 2019 | 09:37 AM
  #318  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Well, It's been a while again. Finally got moved into new house and getting settled in. Hoping to get going on the project again soon. While I am still looking for A painter, I am also debating Wheels and tires as well as a Power adder. I have everything to install Nitrus on it I am thinking of not going that route. Looking into a Whipple or Magna charger.
Has anyone here known of a build with either of these set ups? Would love to see clearances. Any help would be appreciated. Thanks.
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Old Sep 25, 2019 | 12:59 PM
  #319  
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From: Danville, KY
Car: 1988 IROC-Z
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Originally Posted by jazzdadss
I just thought when I got finished de-pinning the 98 LS1 harness it would look different?? Not like 70's drapes! LOL!!

That thing looks like a jelly fish!
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Old Dec 8, 2019 | 08:19 AM
  #320  
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Car: 1989 IROC LSX
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Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap


Pics of progress.
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Old Dec 8, 2019 | 08:50 AM
  #321  
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Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap


Tearing it down



Off to see the wizard


My painter was not happy with what he found.

Bad patch job found




Weatherstrip Chanel’s rotted.

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Old Dec 8, 2019 | 09:09 AM
  #322  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap







Had to get new Tbar pieces

1/4 in final prime.

New weatherstrip Chanel’s from Chris at Auto Fabricators and design in the UK 🇬🇧.
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Old Dec 26, 2019 | 03:08 PM
  #323  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap











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Old Dec 26, 2019 | 03:11 PM
  #324  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap











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Old Dec 26, 2019 | 03:15 PM
  #325  
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Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap










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Old Dec 26, 2019 | 03:17 PM
  #326  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

And now for my next trick. I will put it all back together. Ordering new carpet and must get new T-Top weatherstrips again.
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Old Dec 27, 2019 | 06:46 AM
  #327  
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Car: '86 Z28
Engine: SDPC TPI 350
Transmission: WC T5
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Re: My 1989 IROC LS1/4L60E swap

Looks real nice! Much better metallic, color, and shine than GM ever put on any year of thirdgen.

M
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Old Dec 28, 2019 | 11:43 AM
  #328  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Originally Posted by mwfrels
Looks real nice! Much better metallic, color, and shine than GM ever put on any year of thirdgen.

M
Thanks, OE Flame Red Metallic but with 4 coats of clear, Plenty to cut and buff.
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Old Dec 28, 2019 | 11:44 AM
  #329  
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Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

https://www.thirdgen.org/hatchalign
https://www.thirdgen.org/forums/inte...info-rear.html


Gonna leave this here for reference.
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Old Jan 5, 2020 | 08:32 AM
  #330  
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Re: My 1989 IROC LS1/4L60E swap

This is an awesome build and it gives me hope that I might get mine back on the road some day!
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Old May 9, 2025 | 06:15 PM
  #331  
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Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

I've been working on this tur for 14 years now! I hope to get to drive it again soon!

Sadly it seems all of my pics I had were on my old car club website which is no longer so they are gone............................ I will need to post some newer pics since the first paint job did not work out. $6500 down the drain. Never use an aquaintence for a CASH JOB !

Last edited by jazzdadss; May 9, 2025 at 06:21 PM.
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Old May 9, 2025 | 06:38 PM
  #332  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

This was the color it was supposed to be.
This was the color it was supposed to be.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
Bad body work and the paint is the wrong tone. Lack of coverage made it very brassy.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
ROUND 2! Off to a restoration shop to be taken down and start all over again.
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Old May 9, 2025 | 07:16 PM
  #333  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

Wait, There's more!









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Old May 10, 2025 | 07:13 AM
  #334  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap













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Old May 10, 2025 | 07:24 AM
  #335  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap













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Old May 10, 2025 | 07:35 AM
  #336  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap






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Old May 10, 2025 | 07:42 AM
  #337  
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Car: 1989 IROC LSX
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Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap



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Old May 10, 2025 | 07:46 AM
  #338  
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From: Texas
Car: 1989 IROC LSX
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Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap






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Old May 10, 2025 | 07:47 AM
  #339  
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Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap









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Old May 10, 2025 | 07:51 AM
  #340  
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Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap



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Old May 10, 2025 | 07:56 AM
  #341  
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From: Texas
Car: 1989 IROC LSX
Engine: Swapped LS6 Forged by LME
Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap






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Old May 10, 2025 | 07:57 AM
  #342  
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From: Texas
Car: 1989 IROC LSX
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Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap




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Old May 10, 2025 | 07:58 AM
  #343  
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Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap





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Old May 10, 2025 | 08:00 AM
  #344  
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Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap





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Old May 10, 2025 | 08:03 AM
  #345  
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From: Texas
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Transmission: 4L65E
Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap








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Old May 10, 2025 | 08:05 AM
  #346  
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Axle/Gears: 3.73
Re: My 1989 IROC LS1/4L60E swap

A little Blue Angels time
Attached Files
File Type: mov
IMG_5835.mov (12.91 MB, 5 views)
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Old May 10, 2025 | 09:43 AM
  #347  
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Re: My 1989 IROC LS1/4L60E swap

Impressive build.
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Old May 11, 2025 | 05:58 AM
  #348  
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From: Danville, IN
Car: 1991 Camaro Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: Strange 12 Bolt, 3.42
Re: My 1989 IROC LS1/4L60E swap

Looks great! Glad to see you were able to finally get it done.
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Old May 11, 2025 | 07:26 AM
  #349  
mwfrels's Avatar
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Joined: Jul 2002
Posts: 255
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From: Humid Houston on the Texas coast
Car: '86 Z28
Engine: SDPC TPI 350
Transmission: WC T5
Axle/Gears: 3.23 posi
Re: My 1989 IROC LS1/4L60E swap

Beautiful refinishing job!!!

M
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