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With a second burner, the engine was re-designated GT-302 and fitted to Firebird I (XP-21). [ 13 ] : 43 [ 15 ] [ 16 ] [ 17 ] Brake-specific fuel consumption (BSFC) was a notable issue, which at 1.63 lb/hp·h [ 18 ] was significantly greater than that of a comparable Detroit Diesel 8V71 diesel engine (approximately 0.40 lb/hp·h), [ 19 ] even ...
The first car was a red 1977 Firebird Trans Am survivor car from the Restore a Muscle Car Collection with a price of $57,200 (~$68,373 in 2023). The second vehicle was a rare 1974 Pontiac Trans AM 455 Super Duty, which was another survivor that reached $100,000 (~$119,533 in 2023) plus 10% buyer commission.
To reduce overall size, the single large burner was replaced by two smaller burners and the engine was re-designated GT-302, which was fitted to Firebird I (XP-21). [1]: 43 [9] [12] [13] The GT-300 was designed with a 3.5:1 compression ratio and nominal design turboshaft speeds of 24,000 RPM (gasifier) and 12,000 RPM (power).
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.
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With the exception of the Parisienne Safari, the Firebird, and Fiero, beginning in 1988 all Pontiacs, with the exception of the Firebird, switched to front-wheel drive platforms. For the first time since 1970, Pontiac was the number three domestic car maker in America. The median age of Pontiac owners dropped from 46 in 1981 to 38 in 1988.
Codenamed XP-798, the 1966 Pontiac Banshee was a concept car inspired by European grand tourers, which evolved as a 4-seater version of a Corvette competitor study for Pontiac codenamed XP-778. [ 5 ] [ 6 ] It had a Pontiac 421 V8 , 4-wheel independent suspension and featured sliding hinged doors and hinged roof panels for easier rear seat access.
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).