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GTA DOCUMENTATION/RESEARCH Want to ask about your GTA's documentation, build codes, or other historical data? Then post it HERE!

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Old 08-20-2011   #1
DD9TransAmGTA
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GTA Year: 1987
GTA Engine: 350 TPI Automatic
Pontiac Museum

I checked out the Pontiac Museum today in Pontiac,IL to see if i could find any GTA stuff. I bought two magazines one from 1988 and 1991. The 1991 had prototypes but well the 1988 issue had this!!! This is a ad for Gatorback tires.
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Old 08-20-2011   #2
DD9TransAmGTA
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GTA Year: 1987
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Re: Pontiac Museum

Also this was the only Thirdgen Firebird, its not a GTA but this might bring back some memories its a 1982 Firebird a guy bought off ebay the car was customized in 1986!!!
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1987 Trans Am GTA - Paddle mirrors, carmine red interior,building a twin turbo 5.3 for it, build in progress.

1988 Firebird Formula - C&C T-TOP car, black with grey interior, was a 305 tbi now a 350 tbi, and waiting on a ZZ383 stroker
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Old 08-21-2011   #3
YumikoGTA
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Re: Pontiac Museum

I wonder why they say the 141 mph Pontiac Trans Am GTA. Was that the top speed of it?

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Old 08-21-2011   #4
rhomanski
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GTA Year: 1988
GTA Engine: 350 TPI Automatic
Re: Pontiac Museum

Yes, as it came from the factory. The gearing can affect that though. GM didn't want it faster than the Corvette so every year it was adjusted a little to keep it slower.

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Old 08-21-2011   #5
FearThisGTA
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GTA Year: 1991
GTA Engine: 350 TPI Automatic
Re: Pontiac Museum

I can tell you this, my car would go a little over 141 mph. Of course, I did this only at a sanctioned track.
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Best mph: 98.3
Best 60' : 1.875 on BFG Comp TA's w/ 32 lbs of air in them
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Old 08-21-2011   #6
DD9TransAmGTA
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GTA Year: 1987
GTA Engine: 350 TPI Automatic
Re: Pontiac Museum

The other magazine has the kammback GTA
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1987 Trans Am GTA - Paddle mirrors, carmine red interior,building a twin turbo 5.3 for it, build in progress.

1988 Firebird Formula - C&C T-TOP car, black with grey interior, was a 305 tbi now a 350 tbi, and waiting on a ZZ383 stroker
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Old 08-22-2011   #7
merc3065
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Re: Pontiac Museum

My 88 trans am, optioned the same a the GTA was able to hit just over 150mph.
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Old 08-22-2011   #8
budfreak1
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GTA Year: 1991
GTA Engine: 350 TPI Automatic
Re: Pontiac Museum

Those might be top speed numbers from 1987 when the GTA only had 210 HP and the Iroc had 220. The next year the GTA went up to 225 HP and by 91 which me and cliff have, it was up to 240.

http://www.gtasourcepage.com/techspecs.html
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Old 08-23-2011   #9
Steveh4263
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GTA Year: 1987
GTA Engine: 350 TPI Automatic
Re: Pontiac Museum

Here's some info I found out about the gatorbacks. http://expertpages.com/news/performance_tires.htm Looks like the tires are V rated tires with a top speed of 149 mph. So if the GTA's top speed is 140 mph. Ahh yeah these would work. LOL!
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Old 09-13-2011   #10
FrankieRider2
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GTA Year: 1988
GTA Engine: 350 TPI Automatic
Re: Pontiac Museum

Quote:
Originally Posted by budfreak1 View Post
Those might be top speed numbers from 1987 when the GTA only had 210 HP and the Iroc had 220. The next year the GTA went up to 225 HP and by 91 which me and cliff have, it was up to 240.

http://www.gtasourcepage.com/techspecs.html
Exactly. The Camaro had higher HP numbers due to it being a straight-in air breather instead of a bottom breather like the Firebird.
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