Pontiac Firebird Trans Am 455 Super Duty vs Pontiac Firebird Trans Am 455 Super Duty

Picture of Pontiac Firebird Trans Am 455 Super Duty
Picture of Pontiac Firebird Trans Am 455 Super Duty
Category Firebird Trans AmFirebird Trans Am
Engine layout 7.5 l V87.5 l V8
Max power (ps / bhp) 314 / 310314 / 310
Max torque (Nm / lb-ft) 529 / 390529 / 390
Curb weight (kg / lb) 1691 / 37281661 / 3662
Power / tonne (ps / bhp) 186 / 183189 / 187

Performance

Category Firebird Trans AmFirebird Trans Am
Top speed 250 kph (155 mph)274 kph (170 mph)

Summary

Category Firebird Trans AmFirebird Trans Am
Track Performance 00
Straight line speed 76100
Total 76100

Verdict

Firebird Trans Am 455 Super Duty is the fastest by considerable margin.

However, FastestLaps.com does not have enough lap times and performance data to make this comparison conclusive.

This comparison has been viewed 3.2k times.

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SD 4 speed  2y ago

1973 vs 1974.


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Inline 6 rules  8y ago

Aren't they are the same?

 

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donk  5m ago

73 would be lighter because of the federal 20 mph bumper change in 74. You got an extra 22 hp by drilling out the 3 rivets on the back block off plate on the shaker hood and turning the Ram Air back on. First thing I did when I got my 74 SD home from the dealer . Next change was ditch the 308 ring and pinion and put in a 372. That really woke up the car. A set of headers and glasspacks were worth another 100 horses. Look at the messed up exhaust with the sideways muffler and all the bends on the factory exhaust.