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 GTA - Ls9, ZR1 conversion swap

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Old 03-30-2012, 04:57 PM
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Re: 92 GTA - Ls7 swap

Wrapped the vette up pretty much



Test fit a 19" from the vette on the GTA as it sits. Might try these over the snow flakes.



Old 03-30-2012, 05:34 PM
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Re: 92 GTA - Ls7 swap

I actually love the way those rims sit on the GTA... definitely something to consider.
Old 04-28-2012, 10:33 PM
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Re: 92 GTA - Ls7 swap

Sold the vette and the rims so back to the GTA and still up in the air on wheel choice.

Have alot of work to do on the engine bay to seal up the holes and size up the vintage air setup.

Nobody puts baby in the corner



Front




Siftin thru the slew of parts



Old 05-14-2012, 05:20 PM
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Re: 92 GTA - Ls7 swap

This is gonna be awesome!
Old 05-14-2012, 07:00 PM
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Re: 92 GTA - Ls7 swap

It's gonna get better...

I just put a deposit down for a salvage zr1.

I'm doin the ls9 afterall. Also including a full vette interior, brakes, and the 19/20s. Also, I'm gonna look into to making the steering rack, shocks and abs work for active handling and launch control but as I read it seems far fetched. Ram air I hood and poly window if it's not lame looking.

It's been talked about in the past and I'm basically re skinning the zr1 as a thirdgen. The first time the car got a full 99 Trans am swap so this should be an interesting adventure.

Last edited by Ace; 05-14-2012 at 11:29 PM.
Old 05-16-2012, 02:55 AM
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Re: 92 GTA - Ls7 swap

Originally Posted by Ace
It's gonna get better...

I just put a deposit down for a salvage zr1.

I'm doin the ls9 afterall. Also including a full vette interior, brakes, and the 19/20s. Also, I'm gonna look into to making the steering rack, shocks and abs work for active handling and launch control but as I read it seems far fetched. Ram air I hood and poly window if it's not lame looking.

It's been talked about in the past and I'm basically re skinning the zr1 as a thirdgen. The first time the car got a full 99 Trans am swap so this should be an interesting adventure.
hmm.. unless u want to do a lot of cutting and welding using the rack and front shocks probably wont happen. the brakes, maybe the launch control, maybe some other aspects but youre talking a MAJOR reconstruction of the car to use some of that stuff.
Old 05-16-2012, 10:16 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

You are my hero to pull this off in your garage and build a badass car.I can brake being the easiest to adapt to the bird..have no clue how you would get trac control working..abs wouldnt be a major deal either.
Old 05-16-2012, 12:15 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

LS9
Old 05-16-2012, 01:41 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by 86White_T/A305
You are my hero to pull this off in your garage and build a badass car.I can brake being the easiest to adapt to the bird..have no clue how you would get trac control working..abs wouldnt be a major deal either.
you would need to use the wheel sensors and possibly have to have reluctor rings made.
Old 05-16-2012, 04:09 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Yah the GTA is going to get some surgery.

I won't need much for HVAC with the vintage setup. This will free me up to run the vette fuse box pretty much in the same spot so it will help with the wiring.

Im gonna do some design work to see if I can morph a vette spindle and a camaro spindle. Basically need a way to mount the hub on the spindle and maybe offset the shock mount a bit to fit the 19x10s. Could also do something on the reverse side of the hub flange like a ring gear, etc. Could be a sellable item to avoid use of spacers and bigger wheels The rear has speed sensor rings but need to find out if the pulses are compatible. Shocks I need to do some measuring when I get them but it might be possible to use them in a stock configuration by welding on a bracket to mount on to the spindle, depending on how the shaft is.

Steering rack we'll see too, I cant recall if those have a sensor in it as well. Should be able to make some sort of mounting off of the BMR k-member thou

The interior I'm gonna carve up alot of things, it will look like a vette for the front floorboards and rear seats will be gone and be gas tanks. It needs a full minitub as well.

Shifter will be offset high so it might need some work as well. Im sure there's alot of stuff I'm missing and road blocks..

Hell of a thing to do to a 1/15 or so Blue 92 GTA Should be a good tribute to a 5th gen firebird that never happened Old stylin, new tech.


Old 05-16-2012, 04:25 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

This is goin to be a sweet build
Old 05-20-2012, 07:26 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Ohh Man, do I ever hope you finish this one!

You have the skills, now prove it to us. Yes, I am challenging you to finish it.

This would be the best 3rd Gen build I have ever seen and I WANT TO SEE IT!

PS: Free trans mount coming your way as soon as I find the right box it was moved in.
Old 05-21-2012, 04:56 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by Ace
Yah the GTA is going to get some surgery.

I won't need much for HVAC with the vintage setup. This will free me up to run the vette fuse box pretty much in the same spot so it will help with the wiring.

Im gonna do some design work to see if I can morph a vette spindle and a camaro spindle. Basically need a way to mount the hub on the spindle and maybe offset the shock mount a bit to fit the 19x10s. Could also do something on the reverse side of the hub flange like a ring gear, etc. Could be a sellable item to avoid use of spacers and bigger wheels The rear has speed sensor rings but need to find out if the pulses are compatible. Shocks I need to do some measuring when I get them but it might be possible to use them in a stock configuration by welding on a bracket to mount on to the spindle, depending on how the shaft is.

Steering rack we'll see too, I cant recall if those have a sensor in it as well. Should be able to make some sort of mounting off of the BMR k-member thou

The interior I'm gonna carve up alot of things, it will look like a vette for the front floorboards and rear seats will be gone and be gas tanks. It needs a full minitub as well.

Shifter will be offset high so it might need some work as well. Im sure there's alot of stuff I'm missing and road blocks..

Hell of a thing to do to a 1/15 or so Blue 92 GTA Should be a good tribute to a 5th gen firebird that never happened Old stylin, new tech.


for the front shocks.. you MIGHT be able to fab a "spindle adapter" for it and some sort of strut tower adapter plate. whats the length of the stock strut compared to the corvette front shock?

i dont like the idea of moving the gas tank at all. thats just a safety issue to me.

for the brakes... and all.. if you can, take a note from NASCAR. if you notice how far inboard they mount the brakes, it may help you in getting things fit in the wheel well.

the steering rack will be the absolute hardest because of the geometry of the third gen steering. the 4th gen racks DO NOT work at all and the only options were some manual rack and some insanely expensive custom power rack that still needed work to work correctly.

PS- send LS7 to me for proper disposal ..lol
Old 05-21-2012, 05:01 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

FUUU the good idea fairy arrived


you MAY not need to modify anything to get the bottom of the shock to mount up.

it looks like you have a chance that it could bolt right up to the top strut mounting hole. all youd need is a spacer of some sort..
Old 05-21-2012, 09:39 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by Ace
Yah the GTA is going to get some surgery.

I won't need much for HVAC with the vintage setup. This will free me up to run the vette fuse box pretty much in the same spot so it will help with the wiring.

Im gonna do some design work to see if I can morph a vette spindle and a camaro spindle. Basically need a way to mount the hub on the spindle and maybe offset the shock mount a bit to fit the 19x10s. Could also do something on the reverse side of the hub flange like a ring gear, etc. Could be a sellable item to avoid use of spacers and bigger wheels The rear has speed sensor rings but need to find out if the pulses are compatible. Shocks I need to do some measuring when I get them but it might be possible to use them in a stock configuration by welding on a bracket to mount on to the spindle, depending on how the shaft is.

Steering rack we'll see too, I cant recall if those have a sensor in it as well. Should be able to make some sort of mounting off of the BMR k-member thou

The interior I'm gonna carve up alot of things, it will look like a vette for the front floorboards and rear seats will be gone and be gas tanks. It needs a full minitub as well.

Shifter will be offset high so it might need some work as well. Im sure there's alot of stuff I'm missing and road blocks..

Hell of a thing to do to a 1/15 or so Blue 92 GTA Should be a good tribute to a 5th gen firebird that never happened Old stylin, new tech.


If i may ask, how much??? Shes a beauty:drool:
I dont see any real bad frame damage either. What was wrong?
Old 05-21-2012, 11:50 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Picked up the parts today. Journey back starts.

I'm probably not gonna try abs or active suspension. The front shocks are half the diameter of the Koni shaft. The Konis probably handle better too. I worked something out for the parts I wanted.

The frame was destroyed on the pass side rail.
Old 05-22-2012, 08:50 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Did you get the front brake setup? That would be an amazing swap if so..
Old 05-22-2012, 11:28 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by Ace
Picked up the parts today. Journey back starts.

I'm probably not gonna try abs or active suspension. The front shocks are half the diameter of the Koni shaft. The Konis probably handle better too. I worked something out for the parts I wanted.

The frame was destroyed on the pass side rail.
if they can work in the heavy Cadillacs at the Nurburgring, they would work in your car
Old 05-22-2012, 06:43 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

http://www.frrax.com/rrforum/index.php?showtopic=12907



He put 10.5. On front pretty easy. Why can't you do 10?
Old 05-22-2012, 11:24 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Good news on the front. I'll have to make an account to see that post

Shocks are a bit different if they are used as a pivot point compared to to a arms like the vette

Yes I'll be doing front and rear ceramics.
Old 05-23-2012, 07:11 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Used 2inch spacers,18x10.5 oe rear c5 z06 wheels. Had to "twist" the brake line so it would coil away from wheel. And has fenders rolled. That's it I believe
Old 05-23-2012, 12:28 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

This is going to be the ultimate third gen !!
Old 05-23-2012, 02:25 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by 91camarosRS
Used 2inch spacers,18x10.5 oe rear c5 z06 wheels. Had to "twist" the brake line so it would coil away from wheel. And has fenders rolled. That's it I believe
2 inch spacer? jeez. id be a bit weary of that.
Old 05-23-2012, 11:59 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

I've ran them for years. If I was doing autocross all the time it might be bad.

I'll be home on the weekend and I'll get some pics.
Old 05-24-2012, 01:26 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

He is an avid road racer. I would trust his judgement
Old 05-24-2012, 02:06 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by 91camarosRS
He is an avid road racer. I would trust his judgement
honestly, ive seen racers of all stripes do sketchy things. just something i personally wouldnt do i suppose. if it works for him and hasnt killed him then i cant criticize his use of it.


Ace, those same shocks are used on anything from the corvettes to cadillacs to the new gen on the zl1, ferraris, and heavy *** mercs. i think even the aventador uses them. they wouldve been fine on your car.
Old 05-27-2012, 12:17 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Was a long trip. Kudos to the folks @ autoworks in wisconsin, if anyones after vette parts hit them up for sure.

Unloaded the items from the trailer, mess of parts everywhere.

Need to fully clean out the garage and get started on the metal work.











Old 05-27-2012, 01:45 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Man that engine is crazy! I would def use different seats though. I have heard several people say the zr1 needs seats with more side support. Upper end sparco,bride,recaro,courbu come to mind
Old 05-27-2012, 01:46 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

I have a thread for aftermarket seats with pics you should check out. I saw some really cool ones in a red car on there but way out if my price range. Recaro I think
Old 05-27-2012, 01:50 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

https://www.thirdgen.org/forums/inte...ket-seats.html


There it is if you want it
Old 05-27-2012, 03:55 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

LS9 thirdgen =

Can't wait to see this completed!!
Old 06-02-2012, 06:24 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Can't wait to see more of this one
Old 06-02-2012, 07:44 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

On the endevour to use the vette traction control which modules did you get from the donor ZR1? Not sure what can be done for an aftermarket flash on them but in a factory configuration you need the BCM and other modules to power up the PCM, EBCM and VSES module if equipped. Also badass project.
Old 06-02-2012, 11:42 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by WIll36
On the endevour to use the vette traction control which modules did you get from the donor ZR1? Not sure what can be done for an aftermarket flash on them but in a factory configuration you need the BCM and other modules to power up the PCM, EBCM and VSES module if equipped. Also badass project.
you need the bcm to power the pcm? wtf hows that work
Old 06-03-2012, 12:54 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Bcm is a compliment part, I can start the car without a bcm if you disable vats.

I have all the modules I need including bcm and entire body harness thou I plan on using instead of the Isis wiring system. I'm not doin traction control or abs, main focus will be on the interior and other stylin pieces.

There was thoughts of reversing the door latches to have something that functions like the c6 but the latch is pretty big and would be lookin at reshapin the door entry

Got it Rollin to move it to my buddies garage to help with the fab portion. The 4th gen rear might prove to be too wide to handle the offset so might need a 3rd gen sized rear and small spacers.

On the list is
smooth firewall and cover holes
New mount for c6 wiper motor
Mount for pedals
Mount for center hump
Mount for vintage air hvac
Flatten floor for seats
Fuel tank mounts
Mounts for seat belts



Old 06-03-2012, 06:54 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by RaverRacerX
you need the bcm to power the pcm? wtf hows that work
Not sure on a Y body, but on most GM vehicles the BCM or the EBCM is the gateway module. Meaning that all the other modules remain in an off/awake state until they recieve a B+ signal from the power mode master (PPM). Anyway he has the BCM and other modules so it's just going to be a matter of making everything work together with a revised calibration so they don't just throw U codes all day long.

Ace if you have a hard time getting the schematics you need shoot me a PM I'm a dealertech and all that stuff is available on our online server.
Old 06-05-2012, 03:25 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

What are you looking to get for the ISIS system if you were to sell it?
Old 06-05-2012, 03:38 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

ace, you didnt get the brakes from the ZR?

will, thats some pretty strange stuff..lol
Old 06-05-2012, 04:12 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

This is some crazy project but after reading looking at everything is worth it. Can't wait til you get it done and post a video of it
Old 06-05-2012, 09:05 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by Ace
Bcm is a compliment part, I can start the car without a bcm if you disable vats.

I have all the modules I need including bcm and entire body harness thou I plan on using instead of the Isis wiring system. I'm not doin traction control or abs, main focus will be on the interior and other stylin pieces.

There was thoughts of reversing the door latches to have something that functions like the c6 but the latch is pretty big and would be lookin at reshapin the door entry

Got it Rollin to move it to my buddies garage to help with the fab portion. The 4th gen rear might prove to be too wide to handle the offset so might need a 3rd gen sized rear and small spacers.

On the list is
smooth firewall and cover holes
New mount for c6 wiper motor
Mount for pedals
Mount for center hump
Mount for vintage air hvac
Flatten floor for seats
Fuel tank mounts
Mounts for seat belts




Ls1 is a little shorter than lt1..... IIRC
Old 06-05-2012, 10:41 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Yes I have the brakes, just in boxes.

It was a hard choice but I've decided to turf the GTA project and end my ties with thirgens. I traded a truck for a new GMC regular cab sierra and going to tear it apart with 30 miles on it and do that up the ls9instead.

Will be selling all the parts off, hoping to sell the gta as a roller but doubtful and it will probably be parted .
Old 06-05-2012, 11:51 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

:O....say it aint so! That is going to be a long list or parts for sale.Shame I wanted to see this get done and really standout from the lsx swap crowd on here.Would be a first for such a major facelift.
Old 06-06-2012, 01:00 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

if this was just an engine swap it would be bad ***.. but trying to put the damn Corvette Dash and seats and basically converting the whole car, what a nightmare.. this is like 1-3 yrs in the making..

If it were me, id do the engine swap and call it good..


just me
Old 06-06-2012, 01:49 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Originally Posted by Ace
Yes I have the brakes, just in boxes.

It was a hard choice but I've decided to turf the GTA project and end my ties with thirgens. I traded a truck for a new GMC regular cab sierra and going to tear it apart with 30 miles on it and do that up the ls9instead.

Will be selling all the parts off, hoping to sell the gta as a roller but doubtful and it will probably be parted .
well thats disappointing. wanna sell me the brakes cheap?
Old 06-06-2012, 08:12 AM
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Re: 92 GTA - Ls9, ZR1 conversion swap

I may be interested in a thing or two.
Old 06-06-2012, 10:21 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

I just died a little inside. Wish I could buy half this stuff lol
Old 06-08-2012, 03:39 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

here's a list of most of the parts im selling

http://www.306motorclub.com/dj/sales/
Old 06-08-2012, 06:07 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

These are the days I wish I had extra cash laying around. I really hope someone takes the shell to build.
Old 06-08-2012, 06:33 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

I might end up keeping it.. I just can't decide on a practical way to build it up and i need space. I could almost return it to stock slowly from parts from the 92 camaro but that would be a tedious event. Then theres a 4.8 turbo build with the stuff im pullin off the truck. Yah its probably for the best if it just goes lol..
Old 06-08-2012, 10:28 PM
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Re: 92 GTA - Ls9, ZR1 conversion swap

Ha, I knew this wouldn't happen. Should just do the LS7 swap in the thirdgen, sell it for profit or race it, do your LS9 truck and get it in GM High Tech mag.


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