Is the Pontiac Firebird Trans Am 455 heavy duty?
It seems that Pontiac firebird trans am 455 heavy duty is 455ci 7.5i. True classic… Ilove only 1971 chevy LT1 350 the best and fastest in america in original and stock class. Correction the SD registry shows about 125 1973 SD 455 T/A’s. Not 250 as I had said earlier. There are about 250 1974 SD 455 T/A’s registered @Bijan.
What was the horsepower of a 75 Pontiac Trans Am?
In fact, the 455 engine in the ’75 455 HO Trans Am was identical to the 455 engine you’d get if you ordered a ’75 Catalina station wagon. Compression ratio was 7.6 to 1. It had no special internal components whatsoever and was rated a measly 200 hp at 3,500 RPM and 330 lb.ft. of torque at 2,000 RPM.
When was the last Pontiac Trans Am I drove?
The last 455 HO Trans Am I had driven, a low-compression 1972 model, had been a freaking terror, especially after Nunzi Romano, Pontiac tuning guru in Brooklyn, had put his special touch on the engine.
What kind of engine does a Pontiac 455 HO have?
In addition to the 455 HO engine, the package contains a four-speed floor-shift transmission, 3.23 performance axle ratio, specifically tuned exhaust system with twin exhaust splitters, semi-metallic front disc brakes and special 455 HO hood shaker decal. The new option package will be available in all states except California.
It seems that Pontiac firebird trans am 455 heavy duty is 455ci 7.5i. True classic… Ilove only 1971 chevy LT1 350 the best and fastest in america in original and stock class. Correction the SD registry shows about 125 1973 SD 455 T/A’s. Not 250 as I had said earlier. There are about 250 1974 SD 455 T/A’s registered @Bijan.
In fact, the 455 engine in the ’75 455 HO Trans Am was identical to the 455 engine you’d get if you ordered a ’75 Catalina station wagon. Compression ratio was 7.6 to 1. It had no special internal components whatsoever and was rated a measly 200 hp at 3,500 RPM and 330 lb.ft. of torque at 2,000 RPM.
When did the Firebird Super Duty 455 come out?
Image: Hemmings Between 1973 and 1974, Pontiac would produce just 1296 examples of the Firebird equipped with the Super Duty 455 at an additional cost of $500, with 101 of those being outfitted in Firebird Formula models and the rest installed in Trans Ams.
The last 455 HO Trans Am I had driven, a low-compression 1972 model, had been a freaking terror, especially after Nunzi Romano, Pontiac tuning guru in Brooklyn, had put his special touch on the engine.
What are the specs of a Pontiac Firebird?
Pontiac Firebird Trans Am 455 Super Duty specs Car type Coupe Curb weight 1691 kg (3728 lbs) Introduced 1973 Origin country United States Views 63.4k
Is the 1973 Trans Am SD 455 a race car?
@ Super8 : The 1973 Trans am SD 455 is faster than 1969-70 RA IV , maybe close to the Race breed Mechanical lifter RA V I want to say , this car , in the first , is a street car , no semi race cars that came from GM , Chrysler , AMC and Ford in 60′ . or a one off dealer made cars !!!!!
What’s the trap speed on a Pontiac Firebird?
Trap speeds come in around 115MPH at 5700RPM shift points. These engines are too rare to attempt to disintegrate at higher RPM’s. The engine develops so much power that representative 1/4 times on street tires are impossible to obtain as you burn rubber all the way through about 1/2 of second gear while having a hard time keeping the car straight.
Is there a 1974 Firebird Formula SD-455?
Figures for how many manual transmission-equipped 1974 Firebird Formula SD-455 models were built are not available, but suffice to say that the figure is likely quite low. The SD-455 looks almost identical to the standard Pontiac 455 externally, but most of the similarities end there. Image: Hemmings