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The Firebird Esprit and the Firebird Formula came standard with the 255 hp (190 kW), 350 cu in (5.7 L). The Esprit could be upgraded to a two-barrel carbureted 400 cu in (6.6 L), 265 hp (198 kW), while the Formula could be optioned to receive the L78 4 barrel 400 that produced 330 hp (246 kW) or the L74 Ram Air III 400 345 hp (257 kW).
The Firebird Esprit and the Firebird Formula came standard with the 255 hp (190 kW) 350 cu in (5.7 L). The Esprit could be upgraded to a two barrel carbureted 400 cu in (6.6 L)265 hp (198 kW), while the Formula could be optioned to receive the L78 4 barrel 400 that produced 330 hp (250 kW) or the L74 Ram Air III 400 345 hp (257 kW).
The third generation Pontiac Firebird was introduced in late 1981 by Pontiac alongside its corporate cousin, the Chevrolet Camaro for the 1982 model year. These were also the first Firebirds with factory fuel injection, four-speed automatic transmissions, five-speed manual transmissions, four-cylinder engines, 16-inch wheels, and hatchback bodies.
After the 1974 SD455 was dropped the 1975 Firebird's top performance engine was an 'L78' Pontiac 400 cu in (6.6 L). Pontiac still offered the regular 455 (RPO L75) in its full sized cars, and after a negative public reaction for dropping the 455 engine, it was re-introduced mid-year as an available option for the 1975 Pontiac Trans Am.
One holdout to this industry-wide slide was the Super Duty 455 engine of 1973–1974. Available only in the Firebird Formula and Trans Am models, this was rated at 310 hp (230 kW) net initially but after having issues passing EPA emissions tests, the camshaft was changed to the old RA III cam, and with the change, came a 290 hp (220 kW) net rating.
The Pontiac Banshee is a line of concept cars designed by Pontiac, assuming the role previously established by General Motors' Firebirds of the 1950s. Four Banshee "dream cars" were fabricated through 1988 as design exercises intended to establish exterior and interior themes that could be modified for production versions of Pontiac sports and performance cars.
For 1972, a Pontiac-built 350 cu in. V8 with two-barrel carburetor was added to the option list and became the base V8 for 1973 and 1974. Transmission offerings consisted of a standard column-shift three-speed manual with options including a four-speed manual, two-speed automatic (with six-cylinder) or three-speed Turbo Hydra-Matic automatic ...
New for this year were Firebird-inspired front bumpers, wrap-around taillights, and crease-style body lines. Replacing the Pontiac-built OHC six-cylinder as the base engine for Tempest, LeMans, and LeMans Sport was Chevrolet's 250 cubic-inch straight-six engine. V8 offerings included 350 and 400-cid options with 2-barrel carburation and a 330 ...