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The Firebird lineup was available with several engines: The standard fuel-injected 90 hp 2.5L 4-cylinder Pontiac "Iron Duke": This marked the first time a 4-cylinder engine was offered in the Firebird and was the last true Pontiac engine to be offered in the Firebird. This engine was only offered for the first few years of the generation.
The weight of the entire engine unit was 775 lb (352 kg). The GT-300 was fitted to an "Old Look" transit bus, which was branded "Turbo-Cruiser". [11] 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]
Previously, the Chevrolet inline-six was the only outsourced engine in a Firebird. Pontiac made the 301 (4.9 L) V8 available for order in the lower Firebird models, but due to such high demand and popularity, they removed its availability from the Firebird model to allow enough 301 engines for the other Pontiac lines. It was re-introduced as an ...
This variant of the Camaro was included in Time magazine's list of "The 50 Worst Cars of All Time"; Dan Neil said of it, "As the base engine for the redesigned 1982 Camaro (and Pontiac Firebird), the 2.5-liter, four-cylinder “Iron Duke” was the smallest, least powerful, most un-Camaro-like engine that could be and, like the California ...
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A new engine was fast-tracked, its relatively late start allowing it to take advantage of developments proven in the Oldsmobile V8 and Cadillac V8. As a result, it was remarkably free of teething problems. During 1951–1952, Pontiac had 23 287 cu in (4.7 L) V8-equipped 1953 model production prototypes running tests on the GM proving grounds.
The Iron Duke engine (also called 151, 2500, Pontiac 2.5, and Tech IV) is a 151 cu in (2.5 L) straight-4 piston engine built by the Pontiac Motor Division of General Motors from 1977 until 1993. Originally developed as Pontiac's new economy car engine, it was used in a wide variety of vehicles across GM's lineup in the 1980s as well as supplied ...
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 ...