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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.
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 ...
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 ...
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 ...
In 1935, Pontiac re-introduced their six-cylinder engine, as a 208 cu in (3.4 L) straight-6. The 208 was produced in 1935 and 1936. It was a side-valve design with a timing chain, as was popular at the time. This engine featured a conventional one piece cylinder head, and the distributor was moved to the side of the block.
The Oldsmobile engine was very similar to the Buick engine, but not identical: it had larger wedge combustion chambers with flat-topped (rather than domed) pistons, six bolts rather than five per cylinder head, and slightly larger intake valves; the valves were actuated by shaft-mounted rocker arms like the Buick and Pontiac versions, but the ...
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).
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