91 Trans Am Convertible
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From: Pittsburgh & Allentown PA
Car: 1992 Z28 (Heritage Edition)
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 2.73 Posi
Re: 91 Trans Am Convertible
I've always been a huge fan of your car and I love everything you've done to it...Keep up the good work man!
Also, did you have to do any tuning when you put the HSR manifold on?
Also, did you have to do any tuning when you put the HSR manifold on?
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From: ocklawaha FL.
Car: 81z-28,89gta,91z-28 03 1500
Engine: 355,L98vette tpi,327
Transmission: TH350/700R4/700r4/4l80E
Axle/Gears: 3;73/3;27/2;73/3;73
Re: 91 Trans Am Convertible
Thats the car I want!Interested in trading that car for my bad#ss second gen z28?
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
Thanks, but I'm fairly content with this car for now.Oh yeah! When I slapped it on I dyno'd afterwards and was 10.0:1 AFR. I had to add tons of spark and pull quite a bit of fuel. Still nowhere near perfect driveabilitywise, but it's getting better slowly.
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Joined: Jan 2005
Posts: 353
Likes: 19
From: Ft Myers, FL
Car: 92 Firebird Conv
Engine: 305
Transmission: T-56 w/3.42 Posi
Re: 91 Trans Am Convertible
I'm definitely sticking with the 305. Blowin' it to bits is my goal.
But hopefully that'll be after I at least acquire it's replacement, an LS* motor. I really don't know what it'd look like with chrome wheels, never been a fan of them. And haven't seen another bird like this to compare?
But hopefully that'll be after I at least acquire it's replacement, an LS* motor. I really don't know what it'd look like with chrome wheels, never been a fan of them. And haven't seen another bird like this to compare?btw youre car is F*****G amazing! its everything ive wanted to do to my car all summed up in this thread..
Last edited by Speedy Mike; Jul 27, 2008 at 11:45 PM.
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
Do you have the c6 wheels? They look like wagon wheels? Have any more pictures?
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Joined: Jan 2005
Posts: 353
Likes: 19
From: Ft Myers, FL
Car: 92 Firebird Conv
Engine: 305
Transmission: T-56 w/3.42 Posi
Re: 91 Trans Am Convertible
probably over 1000 pictures of this car.. i dont want to flood your page with pictures of my car...this topic is about your fine automobile!...yea, 1999 c5 wagon wheels
Last edited by Speedy Mike; Jul 29, 2008 at 11:49 PM.
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
So the car tried to commit suicide. I posted another thread about it
here... very saddening.
Although good things have come from the carnage. I picked up a 5.3 GEN III motor out of a wrecked Silverado with only 46k on it for CHEAP.

Went ahead and splurged for the Stainless works headers. Damn look at this weld...


LS6 manfiold/TB/fuel rails and fuel rail covers from my mom's '07 vette
here... very saddening.
Although good things have come from the carnage. I picked up a 5.3 GEN III motor out of a wrecked Silverado with only 46k on it for CHEAP.

Went ahead and splurged for the Stainless works headers. Damn look at this weld...


LS6 manfiold/TB/fuel rails and fuel rail covers from my mom's '07 vette
Thread Starter
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
Starting tear down. Found it easier to get the cherry picker in without the front bumper cover.


Motor is coming out JUUUUUUUST fine.

Of course I needed to have some fun!

Box o' parts. Mostly SBC crap...

Tear down of the trans to swap from plate/input shaft.




Motor is coming out JUUUUUUUST fine.


Of course I needed to have some fun!

Box o' parts. Mostly SBC crap...

Tear down of the trans to swap from plate/input shaft.


Thread Starter
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
While I'm hear I might as well clean up some wiring and re-route harness in less obtrusive places...

Torn accessories off motor...

I just liked this shot.

And some interesting news I didn't know or ever hear about. The stock intake accordian tube fits perfectly onto the LS6 TB.

Torn accessories off motor...

I just liked this shot.


And some interesting news I didn't know or ever hear about. The stock intake accordian tube fits perfectly onto the LS6 TB.
Joined: Oct 2004
Posts: 2,086
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Car: 2012 Corvette
Engine: LS3
Transmission: TR6060
Re: 91 Trans Am Convertible
How much did you pay for your engine? I'm starting to think I'm going to go that route instead of getting a complete 4th gen car to get an LS1 out of. I was watching Horsepower TV this weekend and they got a 6.0L out of an 05 truck for $1200! I've driven my dad's work truck with the 6.0L in it (of course his is a 2000 so it has a throttle cable) and it is shitloads of fun and that would be penty of power to start off with in my car that weighs 3000lbs less!
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Joined: Feb 2008
Posts: 55
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From: iceland
Car: workcar Legacy Cruising 84 trans am
Engine: Ls1 99 corvette
Transmission: update working to get a T56
Axle/Gears: 2004 GTO IRS
Re: 91 Trans Am Convertible
looks good, keep update your work her on the forum and remember photos
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
How much did you pay for your engine? I'm starting to think I'm going to go that route instead of getting a complete 4th gen car to get an LS1 out of. I was watching Horsepower TV this weekend and they got a 6.0L out of an 05 truck for $1200! I've driven my dad's work truck with the 6.0L in it (of course his is a 2000 so it has a throttle cable) and it is shitloads of fun and that would be penty of power to start off with in my car that weighs 3000lbs less!
No, she bought body colored coil covers for her 'vette and I stole her old ones. The manifold/TB/rails I bought. Thread Starter
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
Motor is in, headers are on and I'm starting to wire it all up. No pictures because I'm tired and I'll get them tomorrow.
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From: san jose, ca
Car: 1990 IROC-Z (De-Badged-Carbon Hood)
Engine: Superram 383
Transmission: T-56 w/upgraded Viper Internals
Axle/Gears: 3.73 18x8 and 18x11 irocs
Re: 91 Trans Am Convertible
Wow...very, nice write up! Your garage looked like mine when I did my engine swap some time ago. This is going to be a very cool ride when you are done with her!
Tommy
Tommy
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
Thanks. I've always admired your camaro. One of the nicest I've ever seen. I think because it's simple, and not gaudy/tacky.
Okay, I thought I was going to take more pictures today but was too caught up in wiring. Took me awhile to find the correct diagram and finally I just went to Alldata and printed out a schematic for my year harness. Then I got to cutting! Pulled out as much of the harness that I didn't need; all the emission, auto trans, 4x4 stuff.
Okay, I thought I was going to take more pictures today but was too caught up in wiring. Took me awhile to find the correct diagram and finally I just went to Alldata and printed out a schematic for my year harness. Then I got to cutting! Pulled out as much of the harness that I didn't need; all the emission, auto trans, 4x4 stuff.
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Joined: Aug 2008
Posts: 394
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From: SW Ohio
Car: 1989 IROC-Z28
Engine: L98 - 350 TPI
Transmission: MD8 - 700R4
Axle/Gears: GH3/G80 - 2.77 POSI
Re: 91 Trans Am Convertible
YUP...

Sorry I had to...
I must say your car is about damn pertect. everyone of the mods is tasteful and flows with the look of the car. "i wish I had mo' hands... I'd give that car fo' thumbs up!"
EDIT... man I really need to read to the end.... I am sorry about the "auto pilot" incident. It seems you are well on your way to bringing it back to life.
Just think, now the broken gfx don't seem like a big deal! Sucks about the rebuilt title but... ehh oh well. Keep up the work and photos! Last edited by jrhaus76; Nov 10, 2008 at 08:45 AM.
Thread Starter
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
Little update; Motor is in an I've been daily driving it for a few months. It hasn't been "tuned" yet. Just codes deleted and such. This weekend I'll be going to a dyno day with my local car club. If I remember I'll post up dyno numbers. 





You can see the exhaust poking out in front of the passenger side rear tire. I picked up an LT1 Camaro square tip I'm thinking of putting there. Good? Bad?






You can see the exhaust poking out in front of the passenger side rear tire. I picked up an LT1 Camaro square tip I'm thinking of putting there. Good? Bad?
Joined: Sep 2005
Posts: 6,258
Likes: 6
From: O'Fallon, MO
Car: 1991 Z28 convertible built 3/1/1990
Engine: Cammed 6.0L LSX
Transmission: T56
Axle/Gears: custom Ford 8.8", 4.10 gears
Re: 91 Trans Am Convertible
I'm so glad you were able to save this car after your little whoopsie-daisy a while back.
Your car is my favorite Pontiac on this site, hands down.
Your car is my favorite Pontiac on this site, hands down.
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
I finally got the car dyno'd this weekend. 285hp/316tq on the stock tune. On the way to Portland I got 28mpg @ 75mph, top down. Now I'm looking for a zo6 cam and need to finish the turbo header.
I think I'm going to wait to do something bigger (cam/turbo) to have it tuned because I pulled down almost a solid 12:1 AFR all the way to redline. It was awesome!
Thanks a lot!
I think I'm going to wait to do something bigger (cam/turbo) to have it tuned because I pulled down almost a solid 12:1 AFR all the way to redline. It was awesome! Thanks a lot!
Last edited by iansane; Mar 7, 2010 at 11:11 PM.
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From: Osceola Indiana
Car: 92 RS(sold) 1989 IROC-Z
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: ones that turn
Thread Starter
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
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From: Jackson, TN
Car: 88 GTA
Engine: L98
Transmission: 700r4
Axle/Gears: 3.27 9bolt
Re: 91 Trans Am Convertible
I dont know if seeing a car so nice gives me enthusiasm, or if it just makes me wanna burn mine beacuse it will never be half as nice....
Either way, your car......... IS KICK ***... head to toe... perfect
Either way, your car......... IS KICK ***... head to toe... perfect
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Joined: Aug 2009
Posts: 49
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From: Arcola, IN
Car: 1991 Firebird
Engine: L03 305 TBI
Transmission: 700R4
Re: 91 Trans Am Convertible
Man for awhile, your car has been one of my favorites on the site. I just found your thread about the runaway incident and I was really worried, then I noticed the date on that! Great to see that even after all that its still one of the nicest cars I know of. Keep up the great work!
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Joined: Apr 2010
Posts: 15
Likes: 0
Car: 1991 Firebird Convertible
Engine: 3.1L V6
Transmission: 4L60E
Re: 91 Trans Am Convertible
Where did you get the taillights. I like that look. I just got a 91 stock and want to start to restore it. I really like that look.
thanks,
thanks,
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
I forgot to post up my dyno numbers. No tune it put down 285hp/316tq. Now to build a turbo setup. 
They're actually stock. All 91-92 trans ams/GTAs got them. If you find a pair in good shape, GET THEM. They're rare and you can probably make your money back. I need to find a spare set just in case...

They're actually stock. All 91-92 trans ams/GTAs got them. If you find a pair in good shape, GET THEM. They're rare and you can probably make your money back. I need to find a spare set just in case...
Re: 91 Trans Am Convertible
Those are original taillights for the 1991-1992 Trans AM and GTA. The base Firebird and Formula received different taillights.
Good luck finding a set that doesn't need work or is cheap. Because they only came on 1991-1992 Trans AM/GTAs, there is a smaller pool of them. On top of that, they have a delaminating issue. So a good set is hard to find, let alone cheap.
Good luck finding a set that doesn't need work or is cheap. Because they only came on 1991-1992 Trans AM/GTAs, there is a smaller pool of them. On top of that, they have a delaminating issue. So a good set is hard to find, let alone cheap.
Thread Starter
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
I cringe knowing that my car being a daily driver means they'll probably delaminate/haze soon.
170k and still going though! *knock on wood* Junior Member
Joined: Apr 2010
Posts: 15
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Car: 1991 Firebird Convertible
Engine: 3.1L V6
Transmission: 4L60E
Re: 91 Trans Am Convertible
thanks for the quick response. I will prolly have some more questions as this is my first restoration/mod. I like the seats too. What did you say they were? I like the look, but think I would like something a little smaller on the back rest.
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From: North Central Indiana
Car: 86 IROC
Engine: 383
Transmission: TKO 600
Axle/Gears: 3.54 Dana 44 IRS
Re: 91 Trans Am Convertible
Junior Member
Joined: Apr 2010
Posts: 15
Likes: 0
Car: 1991 Firebird Convertible
Engine: 3.1L V6
Transmission: 4L60E
Re: 91 Trans Am Convertible
what did you have to do to get those C6's to mount up. I found some nice ones, but dont know what all goes into making them fit right.
Thread Starter
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
I run 2" spacers in the front and I have a fourthgen axle with a 1" spacer in the rear. If I didn't have the spacers in the rear I'd probably be running a 2.25-2.5" spacer in the rear. HTH!
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Joined: Jul 2009
Posts: 523
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From: Morgantown, WV
Car: 1990 Trans Am
Engine: 5.7 350 HSR afr195 xfi268
Transmission: T5
Axle/Gears: 3.08 posi
Re: 91 Trans Am Convertible
Great story and work on the car...Looking good !!! Didnt know a 5.3 could put out those numbers stock Supreme Member
Joined: Jan 2001
Posts: 1,374
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From: Pittsburgh, PA
Car: 06 SRM M6 GTO, 98 Grand Prix GTP
Re: 91 Trans Am Convertible
Thread Starter
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
Thanks!
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Joined: Jan 2001
Posts: 1,374
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From: Pittsburgh, PA
Car: 06 SRM M6 GTO, 98 Grand Prix GTP
Re: 91 Trans Am Convertible
oh, if you spray it black, heck yeah go for it. Like you said lower profile etc. I just assumed you were gonna have it be chrome/polished
Re: 91 Trans Am Convertible
well, I'm glad to see your car looking great again and I'm glad to see you back in the saddle again. great looking car. welcome back.
best wishes with it as you continue to upgrade it making it better and better.
Camaro-454
best wishes with it as you continue to upgrade it making it better and better.
Camaro-454
Thread Starter
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From: Tacoma, Wa
Car: '91 TA vert
Engine: turboLSx
Transmission: T56
Axle/Gears: 3.23
Re: 91 Trans Am Convertible
Thanks man. The car has been dead nuts reliable since the swap aside from a broken crank position connector but with some trial and error with a multimeter that was 'fairly' easy to diag. I really haven't done anything to the car since this thread other than an official rear seat delete kit I got for a 4thgen. With a full load at school and full time work I've just been driving it.
Makes me happy every time I get behind the wheel.
I'll try and take some pictures of the battery mount in the back seat and 4thgen rear seat delete someday soon.
Edit; and HOLY CRAP @ 10k views on this thread! I didn't know so many were interested in my POS!
Makes me happy every time I get behind the wheel.I'll try and take some pictures of the battery mount in the back seat and 4thgen rear seat delete someday soon.
Edit; and HOLY CRAP @ 10k views on this thread! I didn't know so many were interested in my POS!





You're damn straight. haha. I've tracked that car more than mine and it's SO much nicer. But it better be for 55k!