1973 Pontiac Firebird

1973 PONTIAC FIREBIRD SQUEAKS BY ONE MORE YEAR
By 1973, not only was horsepower sinking fast, but ever-stricter crash-safety laws were forcing manufacturers to adopt some gawdawful-ugly designs to comply. Clever engineering and extra bracing got both the Camaro and the Firebird to pass the new 1973 frontal impact standards without completely redesigning the front end, as was required on the Corvette. But they only forestalled it one more year, as the 1974 Firebird would grow a very ungainly ‘shovel nose’ in order to cover the newly-required 5 mph telescoping front bumper system. That makes 1973 the last year of the original, elegantly beautiful design of the early 2nd-gen cars. And the look changed very little from the 1972 model year, with only minor trim and detail changes.
1973 PONTIAC FIREBIRD GETS THE SUPER DUTY 455
New for ’73 was the option of a Super Duty 455 or SD-455, which had a strengthened block, 4-bolt mains, forged rods and pistons, and high flow heads. But with the mild cams and low compression (7.9:1) required to meet tightening emissions regs, it still only made 290hp. It begs one to ask why they needed all that block-strengthening. Even the hood scoops were non-functional. All that being said, they were still good for a high-14 second run through the quarter at around 98mph. Besides the SD-455, the base engine was the 250ci 6-cylinder, then a 350 V8 followed by 3 versions of the 455, the top one being the Super Duty. Gone was the 400 V8 option. And as was par for the course in 1973, all the engines were feeling the effects of 'smog-dogging'.

1973 Pontiac Firebird INTERIORS


1973 Pontiac Firebird PRODUCTION NUMBERS

MODEL                  

Base Firebird

Firebird Esprit

Firebird Formula

Trans Am

   PRODUCTION   

14,096

17,249

10,166

4,302

  PRICE WHEN NEW  

$3,050

$3,416

$3,450


1973 Pontiac Firebird SPECIFICATIONS

Wheelbase

Length

Width

Height

Track, front

Track, rear

Weight

V8 ENGINE OPTIONS

350ci V8 w/1X2bbl

400ci V8 w/1X2bbl

400ci V8 w/1X4bbl

455ci V8 w/1X4bbl

455ci V8 w/1X4bbl SD455

PERFORMANCE

250hp 455 V8

108.0 in / 2743 mm

191.6 in / 4867 mm

73.1 in / 1870 mm

50.2 in / 1276 mm

61.3 in / 1556 mm

60.5 in / 1537 mm

3,197 lbs / 1450 kg


150 hp / 270 lb/ft net

170 hp / 320 lb/ft net

230 hp / 325 lb/ft net

 250 hp / 370 lb/ft net

  310 hp / 390 lb/ft net


Zero-to-60mph = NA















1/4-mile = 13.5 sec @ 104.3 mph


OTHER FIREBIRD & TRANS AM PAGES:
..........PONTIAC
....................Firebird/TransAm
..............................1967
..............................1968
..............................1969
..............................1970
..............................1970 Trans Am
..............................1971
..............................1973
..............................1973 Trans Am
..............................1974
..............................1976
..............................1976 Trans Am
..............................1977 Trans Am
..............................1978 Trans Am
..............................1979
..............................1987 Trans Am GTA
..............................1989
..............................1999 Trans Am

Check out these FIREBIRD & TRANS AM BOOKS


Pontiac Trans Am: 50 Years



Pontiac Firebird: 50 Years



Original Pontiac Firebird and Trans Am 1967-2002: The Restorer's Guide (Original Series)



Pontiac Firebird - The Auto-Biography: New 3rd Edition (Made in America!)



Pontiac Firebird Ads: From the Beginning 1967 - 2002



The Definitive Firebird & Trans Am Guide: 1970 1/2 - 1981



Pontiac Firebird: The Auto-Biography (Car & Motorcycle Marque/Model)



Pontiac Firebird Restoration Guide 1967-1969



Original Pontiac Firebird and Trans Am 1967-2002: The Restorer's Guide (Original Series)



How to Rebuild Pontiac V-8s (Workbench)



Trans Am & Firebird Restoration: 1970-1/2 - 1981 (Restoration How-to)



The Pontiac Firebird Anthology 1967 - 2002



Pontiac Firebird 1967-2000




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Last updated 4/18/18

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