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converting hard top to t-top

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Old May 11, 2004 | 01:53 AM
  #1  
mopete53's Avatar
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From: chicago
Car: firebird 95
Engine: v-6
Transmission: automatic
converting hard top to t-top

is this even possible to convert a hard top firebird to t-tops? Can it be done? If so for how much?
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Old May 11, 2004 | 07:32 AM
  #2  
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From: Holland, MI
Car: '89 Black IROC 'vert
Engine: 305 TPI
Transmission: 700-R4
Axle/Gears: 2.73 posi
Anything is possible with enough money, but there isnt an easy swap like the 4th gens have that I know of.
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Old May 11, 2004 | 10:37 AM
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From: Las Vegas
Car: 1987 Formula (original owner)
Engine: 305 TPI
Transmission: T5
Axle/Gears: 9-bolt/3.45
It wasn't uncommon with the thirdgens either. Dealers sent many out to local shops to be converted to t-tops. But it was expensive, and it's probably a lot more today. And I'm not even sure you'd have an easy time finding a shop that will even do it anymore.

I wouldn't even know where to begin looking. I guess local body shops might be able to direct you. Maybe even a local dealer knows of someone, maybe even someone he's used for other custom conversions.

So it's possible. Good luck and happy hunting.
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Old May 11, 2004 | 11:06 AM
  #4  
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From: Las Vegas
Car: 88 GTA
there was a thread about this a while back. this is the only shop that i know of that will do it (or at least do it right)

http://www.markscustomkits.com/T-top_Conversion.html
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Old May 11, 2004 | 11:18 AM
  #5  
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From: Ontario
Car: IROC Z
Engine: 5.7
Transmission: 700R4
you need a t-top car roof and to feather the layers of sheetmetal on the posts and then lower and weld. someone on here has pics of him doing it in a large pop up garage with a big cherry picker
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Old May 11, 2004 | 02:00 PM
  #6  
ddn69's Avatar
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From: North --RI
Car: 92 caddy PIMP
Engine: 4.8
Transmission: i dunno
could u just chop the entire top and swap it out?
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Old May 11, 2004 | 02:43 PM
  #7  
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From: Oregon
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Fatal88 converted a hard top to a t-top, then from a t-top to a convertible! So it can be done! You could either use a kit or the gear from a donor car. Just don't forget the SFC's
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Old May 12, 2004 | 02:25 PM
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From: West Virginia
Car: 1987 GTA
Engine: 350 TPI
Transmission: 700R4
Why not skip the t-top and go for targa? Weaker body and what not but nothing a few suspension connections couldnt help.
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Old May 13, 2004 | 08:31 PM
  #9  
ScrapMaker's Avatar
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
plus you might be able to use the metal you cut off as the actual top... saving some money...
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Old May 13, 2004 | 08:45 PM
  #10  
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From: Ontario
Car: IROC Z
Engine: 5.7
Transmission: 700R4
but the easiest way to go to targa is to cut ff the bar of a t top car and rig it to be mounted and removable
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Old May 17, 2004 | 01:30 PM
  #11  
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
I thought that the t-bar was part of the chassis or something... is it really removable?
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Old May 17, 2004 | 03:09 PM
  #12  
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From: Ontario
Car: IROC Z
Engine: 5.7
Transmission: 700R4
you have to cut it, and then reinforce the cars chassis. ive seen it done on a ttopped fiero
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Old Dec 1, 2004 | 01:31 AM
  #13  
85berlinetta2.8's Avatar
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From: Ontario
Car: IROC Z
Engine: 5.7
Transmission: 700R4
thats like trying to put lego car peices onto a kenex car
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Old Dec 1, 2004 | 02:29 AM
  #14  
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From: surrey b.c. canada
Car: 89 Iroc
Engine: lb9
Transmission: wc t-5
Axle/Gears: 10 bolt 3.08 posi
Originally posted by 85berlinetta2.8
thats like trying to put lego car peices onto a kenex car
haha, so true
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Old Dec 1, 2004 | 06:54 AM
  #15  
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Actually if your starting with a hardtop, using a vette targa would be easy...

I started as a T-Top and went Targa Top.


The T bar spot welds wre drilled out. and then 2 pieces had to be cut. I was in the doing the Top out of a Mold and 1 piece carbon fiber top. That was gonna be painted body color. Along with a Lexan smoked one.

Well a local buddy insisted on doing the same thing. So I decided to go vert. I had a Totaled 91 RS vert I took all the parts from. YES its fully functional as if the factory did it.




Ive done everything myself. So if your skilled YES it can be done. Done right and done cheap. if you pay a Shop to do it then its prob gonna cost alot.
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Old Dec 1, 2004 | 09:44 AM
  #16  
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
it looks like you chopped off the a-pillars too in the picture
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Old Dec 1, 2004 | 07:31 PM
  #17  
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Originally posted by ScrapMaker
it looks like you chopped off the a-pillars too in the picture
?? What ?? Looks normal to me....



http://www.cecoatings.com/images/Car...s/DSC01188.JPG
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Old Dec 2, 2004 | 09:28 AM
  #18  
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
I guess I used the wrong word... I meant Side Pillars....

if you are converting it from t-top to targa... wouldn't the "pillar" where the 6x9's are still be there?
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Old Dec 2, 2004 | 09:30 AM
  #19  
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
Engine: LS1
Transmission: 4L60E
nm I that you are going vert... but I'm curious, where does the top lay when its dropped? does it fit in the trunk or sit like a jetta, or a vwbug?
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Old Dec 2, 2004 | 05:28 PM
  #20  
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
I was about to say Re-read what I typed.. Went To Targa Then desided to just go all the way.

The top lays right behind the back seat rest like any other 3rdGen vert.
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Old Dec 2, 2004 | 09:28 PM
  #21  
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
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nice, so what was the hardest part? making the top latch at the front? bracing the car more? converting the trunk area?
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Old Dec 3, 2004 | 06:21 AM
  #22  
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
To be honesy not much was hard at all. The latch up top/front is only a Diff bracket. You unbolt the 2 t-top ones and bolt in the vert ones.

The complete inner structure of a vert got cut out and basically droped in and welded it up.

I already had SFC's and the Cage in as a Targa top so cutting it was no problem. Then I just redid the back roll bars for the top to still drop.

All in all the Vert part of it was done with in a weekend.
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Old Dec 4, 2004 | 01:23 AM
  #23  
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
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Transmission: 4L60E
do you have any pics of the top actually attached?

btw nice dash swap! I bet that took you longer than the vert conversion
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Old Dec 4, 2004 | 07:28 AM
  #24  
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Originally posted by ScrapMaker
do you have any pics of the top actually attached?

btw nice dash swap! I bet that took you longer than the vert conversion
No pic's of the top up right now. Its back out so I dont burn the top when welding for the mini tubbs.

No the dash swap only took a day actually.
The 4thgen door panels are what will take a little longer then anything because Im remolding the door handles because of the cage side cars.
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Old Dec 4, 2004 | 01:49 PM
  #25  
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Car: 2000 Trans Am WS6 (Black)
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nice... did you have to modify the ducting at all for the 4thgen dash? also I would assume that the "gaps" you see in the dash are just missing panels?
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Old Dec 4, 2004 | 02:00 PM
  #26  
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Im taking the 4thGen a piller plastic and the 3rdGen ones and grafting em both together to make a mold. This way I can make a set to look factory and cover the side defor vents and pillars.

The middle vents will get my fp ,boost and ?? gauges
The radio and hvac are missing right now also. but all will be put back.
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Old Dec 4, 2004 | 02:57 PM
  #27  
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
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Transmission: 4L60E
normally the 4thgen swap doesn't have any of those gaps right? the places where you are gonna put gauges and such...
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Old Dec 4, 2004 | 07:25 PM
  #28  
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
What gaps are you talking about? The top dash pad isnt on in the pictires. and the Gaps beside the pillers will be on ANY 4thGen swap unless you make something to cover then and fill the area.

I belive fatal88 has some good pic's of how He covered the area.
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Old Dec 4, 2004 | 09:42 PM
  #29  
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From: Austin, Texas
Car: 2000 Trans Am WS6 (Black)
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Transmission: 4L60E
I got ya, the dashpad covers all that space... and the only space that it doesn't cover is on the sides along the door hinges?
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Old Dec 4, 2004 | 11:35 PM
  #30  
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From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
Right now Yes..

All space will be covered when Im done..
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Old Dec 5, 2004 | 02:05 AM
  #31  
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Car: 2000 Trans Am WS6 (Black)
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hell yeah I really wanna see this
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