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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.

89 iroc ls1/t56 swap

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Old 06-16-2014, 07:08 PM
  #51  
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Car: 89 iroc 98 T/A
Engine: LSX
Transmission: T56
video of car
Here is video link https://www.youtube.com/watch? v=KhFcOQExzC4&feature=youtube_gdata_player
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Old 06-17-2014, 09:00 AM
  #52  
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Re: 89 iroc ls1/t56 swap
Link didn't work for me... I'd like to see it done!
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Old 06-17-2014, 05:05 PM
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Car: 89 iroc 98 T/A
Engine: LSX
Transmission: T56
Re: 89 iroc ls1/t56 swap
If link didn't work go to you tube and type in finished my thirdgen in the search. Should be first one.
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Old 06-17-2014, 06:14 PM
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Car: '87 IROC-Z | '99 SS
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Re: 89 iroc ls1/t56 swap
Looks good! ... (2) questions.... are those IROC replica's the 18" versions? ... and why is the radiator cap off...purging system of air?
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Old 06-17-2014, 09:55 PM
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Car: 89 iroc 98 T/A
Engine: LSX
Transmission: T56
Re: 89 iroc ls1/t56 swap
Yes sir those are 18" iroc replicas, and I was letting the engine get up to temp and purging air out of the system.
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Old 06-17-2014, 10:03 PM
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Re: 89 iroc ls1/t56 swap
Originally Posted by 91z28 98ta
Yes sir those are 18" iroc replicas, and I was letting the engine get up to temp and purging air out of the system.
Do you know if the OE IROC-Z center caps still fit those replica wheels? Looks great!
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Old 06-18-2014, 06:13 AM
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Car: 87 Trans Am
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Transmission: T56
Re: 89 iroc ls1/t56 swap
How did you get the old 5 speed indicator out so the 6 speed one could go in??
Random, I know, but I got a new centre piece from hawks and don't want to mess it up.
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Old 06-18-2014, 08:09 AM
  #58  
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Car: 89 iroc 98 T/A
Engine: LSX
Transmission: T56
Re: 89 iroc ls1/t56 swap
I believe the original center caps will fit in the replicas..and the 5speed emblem on the console I just covered it with a decal that hawks sells for the 6 speed conversion if that's what you were referring to.
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Old 06-18-2014, 01:43 PM
  #59  
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Re: 89 iroc ls1/t56 swap
The car looks and sounds incredible! Great job ... swap looks like it came from the factory ... well, almost Awesome.
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Old 06-19-2014, 05:48 AM
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Re: 89 iroc ls1/t56 swap
what exhaust do you have on it? it sounds nice at idle!
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Old 06-19-2014, 07:22 PM
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Car: 1986 IROC-Z
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Re: 89 iroc ls1/t56 swap
Originally Posted by 91z28 98ta
You really don't understand how much time and money goes in to these builds until you get into them. Then you realize when you find a ls swapped car for sale that's why normally people want so much for them.
You've got that right. I was keeping track so good of all the money I spent, then all hell broke loose on ordering parts. It's crazy how easy and fast it can get out of hand. And man, your video right here...
... just motivated the hell out of me to get mine done. Sounds mean as hell too. Nice job!
Last edited by coptzer; 06-19-2014 at 07:26 PM.
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Old 06-19-2014, 07:22 PM
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Car: 89 iroc 98 T/A
Engine: LSX
Transmission: T56
Re: 89 iroc ls1/t56 swap
Thanks....Has hawks stainless headers and y pipe to a cutout right before back axle then goes through a flow master muffler..in video cutout is open... I like it you can really hear the cam that way I'll eventually get me an electric cutout valve for it. Been driving it around putting some miles on it and man I love it. My next thing will probly be suspension upgrades n maybe my boss's moser rear with 373's if I can talk him out of it.
Last edited by 91z28 98ta; 06-19-2014 at 07:31 PM.
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Old 06-19-2014, 11:53 PM
  #63  
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Re: 89 iroc ls1/t56 swap
Man that sounds so good, I've seen so many LSX upgrades on this board and even one at work into a '95 S10. I want it but will have to wait til after the first of next year. Right now finishing some rear end and suspension upgrades. Everything else is ready just need the bucks for the LS/trans. I want to do a H/C/I with a 4L60E.
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Old 06-21-2014, 09:01 AM
  #64  
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Car: 89 iroc 98 T/A
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Re: 89 iroc ls1/t56 swap
Its really not that bad if you have time to do it some how I got it done in 6 months give or take.. personally I think its ideal if u have a donor car..wrecked or whatever that way your not piecing it together.
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Old 06-21-2014, 09:04 AM
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Car: 89 iroc 98 T/A
Engine: LSX
Transmission: T56
Re: 89 iroc ls1/t56 swap
Pics
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Old 08-07-2014, 05:26 PM
  #66  
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Car: 89 iroc 98 T/A
Engine: LSX
Transmission: T56
Dyno Day
Made 363.4hp to the wheels. I was pleased.
Attached Thumbnails 89 iroc ls1/t56 swap-img_12369094430077.jpeg   89 iroc ls1/t56 swap-img_12376503626481.jpeg  
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Old 08-07-2014, 11:37 PM
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Re: 89 iroc ls1/t56 swap
Must be nice getting out and driving it!
It looks like I'll get mine "done" just in time to not need T-tops lol.
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Old 08-08-2014, 06:27 AM
  #68  
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Car: 89 iroc 98 T/A
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Re: 89 iroc ls1/t56 swap
Yeah I love it..especially with the 6 speed it makes it fun to drive.
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Old 08-10-2014, 12:45 PM
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Re: 89 iroc ls1/t56 swap
How did I miss this build for so long? Nice work.
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Old 08-28-2014, 01:51 PM
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Re: 89 iroc ls1/t56 swap
No AC ???
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