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.

92 TransAm GTA / lsa / ctsv swap

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Old 06-21-2014, 02:40 PM
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Car: 92 quasar gta
Engine: Nothing
Transmission: Nothing
Axle/Gears: 4.11s
92 TransAm GTA / lsa / ctsv swap

This poor 92 GTA i have has went thru a lot of changes in the last decade. I put an ls1 back in 2000 but its since been stripped. I was going to do a ls9/ls7 then flpped to a stock resto. I found this cts-v and the wheels started turning. I had bought a bone stock iroc with 50 miles, selling now as I like building projects more.

Initial thoughts/plans over the next years

Full repaint to the quasar stock blue
Smooth the engine bay, no holes
Lsa swap with 6 speed auto, would like to find a ls9 upper lid to lower profile
Mod stock tank to accept cts pump
Dash swap
Fibreglass some door panels
4th gen rear w abs rings or try the IRS
S10 modded front rotors with abs
Tubular bmr k with arms and UMI strut hats
Jegster tunnel mounted torque arm due to the trans
18" year one billet snowflake wheels

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Old 06-21-2014, 05:43 PM
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Re: 92 TransAm GTA / lsa / ctsv swap

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Old 06-21-2014, 07:01 PM
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Re: 92 TransAm GTA / lsa / ctsv swap

What happened to the LS9 you had?
Old 06-21-2014, 09:00 PM
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Car: 92 quasar gta
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Re: 92 TransAm GTA / lsa / ctsv swap

Had it in a sierra truck, took it out and sold it and did a full escalade interior and 6.2 swap into the sierra
Old 06-22-2014, 03:56 PM
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Re: 92 TransAm GTA / lsa / ctsv swap

Overall goals are good driveabiltity and no lights/messages on the dash.

ABS:

Dug up some old information on the ABS. Someone had made some ABS rings 47 tooth to fit the S10 rotor but I think I found one that will be pretty close dimensionally wise that I can fit to the thirdgen hub and use the S10 sensor pickup. Worst case I'll cad something up and get it water jetted. So it will end up getting ABS, just fab new lines from the controller to the ABS.

AIR BAG:

Fronts and seats should be fine. Can use a resistor to simulate the pillars. Module has to be reprogrammed as it blew the drive side and pillars.

SUSPENSION:

This is the one thats probably the most difficult to integrate. The rear shocks are probably usable but the front uses an integrated a-arm and mount which wouldnt allow for any adjustability as they align on the lower a-arms and our cars dont allow that. It looks like there is also some form of level sensor in the rear which wont work on an solid axle very well. I'll just follow suit of people that have put adjustable coil overs or air ride, resistors are cheaper and it will probably handle just as good with koni yellows. The IRS would be neat but adds a ton of extra work for minimal gain.

BRAKES:

Front brakes are easy, just an adpater. The rear brakes probably are not worth using after looking at the e-brake setups. I will just get some LS1 rear wilwoods due to the need for the abs brackets. The rear on these cars uses an electronic brake. Just find a spot for the module, make a bracket and just likely need some form of new lines fabbed up.

INTERIOR:

Dash looks to be pretty square as far as mounting goes into the CTS-V. Will need to remove the entire thirdgen firewall and graft in the CTS-V one and the mounting brackets. The door panels will probably be a nightmare. I have an idea to use door popper but relocate it inside the door and mount it with the new door panel to pop the doors manually, normally these are in the trunk/back of the vettes but then would have to change the pin to the door and latch to the inside frame and adds alot more fab. It will mean having to climb thru the car in the even of power loss but it wouldnt be the first time.

PAINT:

I recall there was a blue thirdgen that never was finished that had recessed door handles similar to the CTS coupe and vette. I think im gonna color change it to a darker metallic blue. I know it kills the rare-ness of the quasar blue but I think heritage on this car is out the window.

Old 06-22-2014, 09:06 PM
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Re: 92 TransAm GTA / lsa / ctsv swap

Guess she is no longer for sale...

Good on you, this will be a cool swap. Similar to your shortbox build, but with a few more challenges. Nice work BTW.

Quasar Blue is timeless in my opinion. That and those ZR1 wheels look killer on this machine.
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