What year did they put the 455 in the Trans Am?
The 455 first appeared in 1970, and it took over from the 400 cubic inch and 428 cubic inch motors that had been put into play following the 389’s departure from the high performance scene.
What Trans Ams had a 455?
It’s difficult to overstate the significance of Pontiac’s Super Duty 455 engine, which was offered in the 1973 and ’74 Firebird Trans Am and Formula models.
What was the last year for the Pontiac 455 engine?
The basic 400 continued through the 1978 model year, and the 428 grew into the 455 for 1970 when a 0.21-inch increase in stroke was added to its crankshaft. The 455 went away after 1976, and Pontiac went to work developing an entirely new small-displacement V8 whose total design was aimed at maximizing fuel economy.
How much horsepower does a 1976 Trans Am 455 have?
200 horsepower
Except in California, the big 455 V-8 remained available, again rated at 200 horsepower. Trans Ams continued to display their immense Firebird emblem, sometimes derided as the “screaming chicken.” Because of government emission standards the 1976 Trans Am went from a 455 to a 200 horsepower engine.
Did Pontiac make a 455 big block?
Pontiac, Oldsmobile, and Buick each offered 455 cubic inch big block V8 engines in its muscle cars and full size models, but these engines didn’t share any attributes other than their displacement.
How much horsepower did the Pontiac 455 have?
360 horsepower
Rated conservatively at 360 horsepower and producing a tremendous 500 pound-feet of torque, the 455 HO gave the GTO the powerful aggression needed to appeal to performance-minded buyers.
How many horsepower did a Pontiac 455 have?
Rated conservatively at 360 horsepower and producing a tremendous 500 pound-feet of torque, the 455 HO gave the GTO the powerful aggression needed to appeal to performance-minded buyers.
What cars had the 455 engine?
How much HP can a Pontiac 455 make?
In its introductory model year as the division’s top engine, the round-port 455ci had a gross rating of 335 hp at 4,800 rpm and 480 lb-ft at 3,200 rpm. The 455 H.O. was carried over for 1972 without any major changes, but the gross output rating was dropped in favor of net values.
What years did Oldsmobile make the 455 engine?
Its 455-cu.in. engine, which was introduced in 1968 and featured in the Hurst Olds, Toronado and full-size models, became the standard 4-4-2 powerplant, rated at 365 hp. Opting for the W-30 “W-Machine Package,” however, would provide significant additional benefits. Available first in 1966 on the 400-cu.in.
Did Pontiac know the Trans Am SD-455 was never going to last?
Surely, Pontiac must have known the Trans Am SD-455 was never going to last long in the market, but it still did not stop the carmaker from creating what is arguably one of the finest muscle cars at the time .
What are the specs of a 455 Trans Am 455 Super Duty?
Pontiac Firebird Trans Am 455 Super Duty specs Car type Coupe Curb weight 1691 kg (3728 lbs) Introduced 1973 Origin country United States Views 64k
Is the 455 HO Trans Am the fastest’75?
As it turned out, the ’75 455 HO Trans Am was the quickest, fastest ’75 we tested all year–including the Corvette. Happily, 857 people never read my article, or didn’t care what I thought, and stepped up and bought 455 HO Trans Ams in 1975.
Is the 1973 Trans Am SD 455 faster than the RA IV?
@ 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 !!!!!