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.

1990 GTA LSX Swap

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Old Feb 27, 2020 | 08:33 AM
  #1  
89FRMLA350's Avatar
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From: Sunset, Utah
Engine: None
Transmission: None
1990 GTA LSX Swap

It is time for me to add my name to the list. I have a 1990 Trans Am GTA. It was originally a 350 TPI/700R4. I have contemplated a few times selling it over the past few years but could never actually do it because I am sure I would have regretted it. It has gone through quite a few transformations in the few years I have owned it. I replaced the old black interior with a new beechwood interior and replaced the broken center console in favor of a 4th gen one. It also has a 4th gen TA rear spoiler along with a VFN fiberglass Ram Air hood. The engine was upgraded with an Edelbrock base and runners along with a true dual exhaust. I then removed the TPI for a HSR and a CX Racing Turbo Kit I picked up. I only had the engine mocked up with that setup and I realized its ridiculous to spend $1200 on a stand alone system for such an old Fuel Injection setup. That's when i made the decision to go LS. The engine and transmission were pulled only a few weeks ago and that is where I currently am in the process. I have yet to decide which engine/trans combination to go with, K member, etc....










Last edited by 89FRMLA350; Feb 27, 2020 at 09:42 AM.
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Old Feb 27, 2020 | 11:16 AM
  #2  
ShiftyCapone's Avatar
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: 1990 GTA LSX Swap

Car looks great. What LS setup are you thinking?
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Old Feb 29, 2020 | 08:51 AM
  #3  
89FRMLA350's Avatar
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Joined: Mar 2002
Posts: 522
Likes: 9
From: Sunset, Utah
Engine: None
Transmission: None
Re: 1990 GTA LSX Swap

Not really sure. I know I will be sticking with an auto trans for sure.
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