1979 Pontiac Firebird Trans Am �€" 6.6L 403 V8, TH400, Blue over
Black Why This Car Is Special The 1979 Pontiac Firebird Trans Am
sits at an interesting crossroads in American automotive history.
By 1979, the emissions and fuel economy squeeze of the mid-1970s
had already taken a real toll on performance across the industry,
yet the Trans Am remained one of the last credible performance cars
you could walk into a dealership and buy. Pontiac sold over 117,000
Trans Ams for the 1979 model year �€" a record at the time �€"
driven in no small part by the car's cultural moment following the
1977 film Smokey and the Bandit. That popularity has since made
clean, honest 1979 Trans Ams increasingly hard to find in original,
driver-quality condition. This particular 1979 Pontiac Firebird
Trans Am is equipped with the 6.6-liter 403 cubic inch V8, which is
a detail worth understanding. In 1979, buyers who checked the box
for the 6.6L engine received one of two different motors depending
on where the car was built and what transmission was ordered. Cars
equipped with the TH400 three-speed automatic received the
Oldsmobile-sourced 403 cubic inch V8, while the four-speed manual
cars got the Pontiac-built 400. This car has the TH400, which
confirms the 403 Olds mill under the hood �€" and that combination
is actually well-regarded. The 403 is a torquey, durable engine
that responds well to basic modifications and has a strong
following among Firebird enthusiasts. The TH400 is one of GM's most
proven automatic transmissions, known for its strength and
longevity. Together they make for a straightforward, reliable
drivetrain that has held up well over the decades. The VIN on this
car decodes to a 1979 Pontiac Firebird (model code 87) built in the
Norwood, Ohio assembly plant, with the 6.6L V8 engine designation
confirmed in the powertrain position. Norwood-built Firebirds are
well documented among collectors and the plant was one of GM's
primary F-body production facilities throughout the
second-generation run. Features List - 6.6L 403 cubic inch
Oldsmobile V8 - TH400 3-Speed Automatic Transmission - Trans Am
Badging - Gold Snowflake Wheels - Dashboard Tachometer - Center
Console - Factory Bucket Seats - Factory Air Conditioning - Power
Steering - Woodgrain Dash Trim - Firebird Door Emblems - Dual
Exhaust - Black Vinyl Top - Black Vinyl Interior Mechanical Under
the hood, the 403 cubic inch V8 is a familiar sight to anyone who
spent time around late-1970s GM performance cars. Oldsmobile
developed this engine as a displacement-efficient way to maintain
torque output while meeting tightening federal emissions standards.
In Trans Am trim, it was rated at 185 horsepower in 1979 �€" a
number that looks modest on paper but translates into a car that
moves with authority in real-world driving, especially given the
403's strong low-end torque characteristics. The aftermarket air
cleaner visible in the engine bay photographs is a common and
functional upgrade on these cars, improving airflow over the stock
unit. The TH400 three-speed automatic was one of the most robust
transmissions GM produced during this era. Originally developed in
the mid-1960s, it was used across a wide range of GM vehicles
through the end of the 1970s and is well-supported by the
rebuilding and parts community today. Power steering rounds out the
driving experience, keeping effort manageable while maintaining
enough road feel that the car stays engaging on longer drives. The
dual exhaust setup gives the 403 a proper exhaust note and helps
the engine breathe more freely than the single-exit configurations
used on lower trim Firebirds. Interior The black vinyl interior is
correct and period-appropriate for the 1979 Pontiac Firebird Trans
Am. Factory bucket seats sit up front, flanking a center console
that houses the shifter for the TH400. These consoles were a
standard Trans Am feature and give the cabin a focused,
driver-oriented layout. The woodgrain dash trim adds
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