When did Pontiac start making the 350 TPI GTA?
According to Pontiac order sheets and production records, the only GTAs subsequently available with both the 350 TPI engine and the T-top option were the 1989 model cars; the GTA that year enjoyed a large build number with both options. Starting in 1990, all 350 TPI GTAs were available as hardtops only.
What kind of engine does a Pontiac GTA have?
According to Pontiac order sheets and production records, the only GTAs subsequently available with both the 350 TPI engine and the T-top option were the 1989 model cars; the GTA that year enjoyed a large build number with both options.
Where did the Trans Am GTA convertibles come from?
Pontiac had the small outside company convert a limited number of Firebirds into convertibles due to an increase in demand for a topless Firebird. The option did have an RPO code and the cars were drop-shipped to Pioneer Pontiac in Livonia, MI for conversion, then sent out to the selling dealers after completion.
When did Pontiac start using the same crankshaft?
This particular casting was used for mid-1970s 350 and 400 applications, and contains only the first four digits of the part number. Since the two engines use the same crank but require different balances, the remaining two digits were stamped elsewhere. It makes identification very difficult.
Can You rebuild a Firebird Pontiac Trans Am?
Firebirds and Trans Ams fitted with the special high-performance engines command the highest values, but certainly the more common Firebird and Trans Am V-8 cars are worth rebuilding. This Tech Tip is From the Full Book, TRANS AM & FIREBIRD RESTORATION: 1970-1/2 – 1981.
When did GM stop using the Turbo 350 transmission?
When combined with a 9.5” converter, the overall requirement is around 10 quarts. The Turbo 350 transmission, commonly known as the TH350, was a 3 speed automatic transmission that began phasing out the GM Powerglide in 1969. The TH350 then lasted 15 years before eventually being replaced by the 700R4.
When did the third generation Pontiac Firebird come out?
The third generation Pontiac Firebird was introduced in late 1981 by Pontiac alongside its corporate cousin, the Chevrolet Camaro for the 1982 model year. These were also the first Firebirds with factory fuel injection, four-speed automatic transmissions, five-speed manual transmissions, four-cylinder engines, 16-inch wheels, and hatchback bodies.
When did the GM TH350 automatic transmission come out?
It features an integral bellhousing. The TH350 weighs 120 lbs. It has a distinctive oil pan that is chamfered at the passenger side, rear corner. At the right rear of the case is the modulator. The TH350-C was the lockup torque converter version introduced in the late 1979 model year, and was produced through 1984.
How many Trans Am GTA’s were made in 1988?
End of story……….. go to the CDB Section to see these manufacturer’s documents. A total of 718 1988 GTAs (624 U.S cars and 94 Canadian cars) were equipped with the distinctive hatch treatment. Interestingly, despite the cancellation documentation above…. Pontiac records do show that a single car was built with the option for 1989.
What kind of instrumentation does a Trans Am GTA use?
Standard GTA instrumentation included everything necessary for monitoring the machine and its condition. Present and accounted for were a large 7000-rpm tachometer and a 140-mph speedometer; secondary gauges were provided to monitor fuel levels, voltage, oil pressure]
Is the Trans Am GTA a convertible car?
The actual number of GTAs converted is not known, but supposedly only some fifty (50) cars equipped with the 5.7L TPI engine (a GTA standard feature) were turned into droptops. According to Pontiac literature, order sheets, and production records, the GTA was not offered as a “factory” convertible model in 1991-1992.
Which is better a Trans Am or a GTA?
GTA are usually more rare than a Trans Am and GTA have better ground effects. Personally I think the the GTA is a way better looking car. I’m not sure if this was an option on top of the GTA model, but every GTA I’ve ever been in also had the WS-6 performance suspension package.
What’s the difference between a TPI and a LT1?
The Key reason the the 88-92 L98 350 TPI motors made 245hp and the 93 LT1 made 275hp is that intake. heads flow practically identical numbers and the cam was almost as similar. Best intake for TPI in my opinion is the TPIS miniram.
What should the TPI be on a street engine?
On a street engine, try to stay under 200cc. Here are the stock TPI head flow numbers along with some other popular GM heads. 416 305 heads Lift/intake/ exhaust. 0.050 31 15 0.100 63 37 0.150 92 61 0
Are there any issues with the TPI intake?
A bit expensive really but nice one piece intake design that cures the issues with TPI intakes.