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4th gen to 3rd gen swaping questions!!!

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Old 10-19-2010, 12:05 AM
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Car: 1991 camaro vert
Engine: ls1 soon
Transmission: t56 soon
Axle/Gears: moser 12bolt 4.10 soon!
4th gen to 3rd gen swaping questions!!!

i believe that this would be the right area to post these questions since there not motor or trans related.. if not any mod that wants to relocate this please feel free to..



im hopefully pickin up a 99 ss parts car.. its a complete car that was totaled out from an accident.. anyway besides the motor, transmission, rear end, gas tank, dash, seats, and door panels what else can be swaped from a 4th gen into my 3rd gen vert?

also i plan on using the stock harness from the parts car since im going to be swapping the complete motor, trans, dash and all.. so im hoping to plug and play except for the head and tail lights which i already figured i would have to wire in to the new dash..what else do i need to keep from my 91 harness??? this is the most important question cuz i already have the harness out and ready to sell!!

these are what i have in mind that i would like to swap
front brake assembly? since im going with a tubular kmember and control arms.. fuel lines? brake lines? brake booster? master cyl? steering setup? driveshaft? anything else????

i know about the dash swaps and door panels and all that but im talking about unbolting them from the parts car and bolting them in on the vert.. mainly the brake up grades and fuel lines.. im trying to use as much as i can from the parts car so i dont have to buy more stuff.. leaveing for the military in january and really want my baby atleast being able to move under her own power since when i get back i will only have a few weeks to pack up and go to my new post and wont have time to finish car untill i get settled where ever that may be..

Last edited by quickkris2006; 10-19-2010 at 12:09 AM.
Old 10-19-2010, 08:10 AM
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Re: 4th gen to 3rd gen swaping questions!!!

when i put a 454 in my 89 camaro can i use the stock big block exhust
Old 10-19-2010, 08:33 AM
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Re: 4th gen to 3rd gen swaping questions!!!

Cat back exhaust, outside door handles, outer window sweeps, radiator, coolant tank, window washer fluid tank, radiator shroud with dual fans if you use 4th gen rad, rear sway bar,

From a lt1 trans am - the spoiler, sideview mirrors, and door side moldings.
Old 10-19-2010, 10:02 AM
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Car: 1991 camaro vert
Engine: ls1 soon
Transmission: t56 soon
Axle/Gears: moser 12bolt 4.10 soon!
Re: 4th gen to 3rd gen swaping questions!!!

That's good to know. I knew about the radiator and stuff just forgot to list it. But I was looking more towards suspension components and other items that are used to make the car run and drive.

Last edited by quickkris2006; 10-19-2010 at 10:06 AM.
Old 10-19-2010, 10:06 AM
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Car: 1991 camaro vert
Engine: ls1 soon
Transmission: t56 soon
Axle/Gears: moser 12bolt 4.10 soon!
Re: 4th gen to 3rd gen swaping questions!!!

Originally Posted by hale.stephen66
when i put a 454 in my 89 camaro can i use the stock big block exhust
Leaning more towards the lsx series motors.. inless ur talking about an lsx 454. I'm hoping that with the tubular kmember I will have enough room to run the long tube headers that are comming with the ls1 parts car
Old 10-19-2010, 12:14 PM
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Re: 4th gen to 3rd gen swaping questions!!!

Everything in the rear suspension will bolt on your car. The front calipers, pads, and rotors are the only front end parts that will fit from the brakes or suspension. I believe the master cylinder will fit, but not 100% sure of that.

Pretty much all of the interior can be made to fit. The seats are the only real "bolt-in" parts though. Everything else like the dash, door panels, center console, etc needs at least a little bit of work to make it fit.
Old 10-19-2010, 02:05 PM
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Car: 1991 camaro vert
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Axle/Gears: moser 12bolt 4.10 soon!
Re: 4th gen to 3rd gen swaping questions!!!

great thats what i wanted to hear! i already knew that the interior pieces would take some work to fit but thats the fun of it all.. now how about the carpet? fuel lines? brake lines, even tho im probably ganna go steal braided anyway.. anyone know where to get the steel braided lines? not looking for just the covers i want the actually lines from front to back of the car.. will look nice with my fully coated underbody and make install alot easyier then hard lines.. thanks guys keep the info comming and ill be sure to post tons of pics during my swap which im hopping only takes me a few weeks to switch entire car over once i get the parts car here.. lotta long night ahead of me
Old 10-19-2010, 06:45 PM
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Re: 4th gen to 3rd gen swaping questions!!!

for the brake lines and fuel lines, try inlinetube, thats were i got mine and they fit perfect
http://www.inlinetube.com/
Old 10-28-2010, 12:34 PM
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Re: 4th gen to 3rd gen swaping questions!!!

Originally Posted by Firebat
outer window sweeps
Really? i haven't even noticed that

Originally Posted by 92RS_Ttop
I believe the master cylinder will fit, but not 100% sure of that.
booster and masters fit, though i heard with the ls1 booster the rods are longer or shorter or some damn thing. also the 4 studs that you use to bolt to the firewall are a smaller diameter but its not really to much of a problem as far as the masters the ls1 works with stock lines the lt1 you have to use adapters. im running a LT1 booster with a LS1 master with the stock 3rdgen lines and prob valve.

here is some compares i took.

Name:  Picture009-1.jpg
Views: 29
Size:  57.8 KB

more pics of them and the boosters found here at post #227

https://www.thirdgen.org/forums/memb...y-start-5.html

Last edited by FueledSoul; 10-28-2010 at 12:40 PM.
Old 11-05-2010, 02:41 PM
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Re: 4th gen to 3rd gen swaping questions!!!

bump on outer 4thgen window sweeps, sold both my 4thgens so i cant just go out and compare them
Old 11-05-2010, 03:17 PM
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Re: 4th gen to 3rd gen swaping questions!!!

Originally Posted by FueledSoul
bump on outer 4thgen window sweeps, sold both my 4thgens so i cant just go out and compare them
Check out this thread:

https://www.thirdgen.org/forums/auto...-solution.html
Old 11-09-2010, 01:21 PM
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Re: 4th gen to 3rd gen swaping questions!!!

Thanks!
Old 11-09-2010, 03:48 PM
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Re: 4th gen to 3rd gen swaping questions!!!

If you are swapping the dash, you can use every inch of wire from the ls1 car. It would add a tiny bit of extra work, but it would save from having to make/buy a conversion harness. That's what I did on my car...from headlights to tail lights, my car has 4th gen ls1 wiring.
Old 11-09-2010, 05:04 PM
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Re: 4th gen to 3rd gen swaping questions!!!

You can definitely do a full dash swap if you like the new look. If you want you can also use all your old dash and gauges. I believe the 1991 was all electric? Should just be a matter of hooking up the wiring. I bet you could even make your fuel gauge work with the 4th gen tank (I did on my firebird). If you go that route, search for my fuel gauge thread and see if you can apply the modification to your camaro gauge. (I am going to find one locally and see if I can dream something up eventually)
Old 12-22-2010, 12:38 PM
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Re: 4th gen to 3rd gen swaping questions!!!

I am trying to install a LT1 master on my 82 TA. Can anyone tell me what size fittings I need to install the lines from the valve to make the lines work. I went to a few shops around here but they didn't have anything in stock.
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