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Hewing to GM's standing edict limiting engine size to 400 cu in for its midsize and smaller cars, the 360 hp (268 kW) (underrated), [citation needed] the 400 cubic inch Ram Air V-8 was the most powerful and advanced option available in the 1967 GTO and Firebird. Its cast "670" heads had taller valve spring heights than the standard D-port heads ...
This engine was used in the 1966-67 Tempest and Le Mans and 1967 Firebird. An optional high-performance Sprint version featured high-compression pistons, hotter cam, dual valve springs, split/dual exhaust manifold , stronger coil, and the then new Rochester Quadrajet carburetor. rated at 207 hp (154 kW). [ 5 ]
The Pontiac Firebird is an American automobile built and produced by Pontiac from the 1967 to 2002 model years. [1] Designed as a pony car to compete with the Ford Mustang, it was introduced on February 23, 1967, five months after GM's Chevrolet division's platform-sharing Camaro. [2]
A new engine replaced the 326. This new engine was based on all existing Pontiac engine architecture and used the 389, 400, and 326 engines' crank at 3.75" stroke, and expanding the 326's 3.72" bore to 3.875" to give 353.8 cubic inches. It was marketed by Pontiac as a 350.
However, for 1964, the engine's displacement was adjusted so that it actually was 326 cubic inches, making the 1963 "326 V8" a single-year engine. The cast-iron V8 engine increased the Tempest's weight by 260 lb (120 kg) over the weight of a Tempest equipped with a Trophy 4 engine; front/rear weight distribution changed somewhat to 54/46.
Unlike most of the prior years, the engine choices were simplified considerably; each year, on both the Camaro and the Firebird, there was only one V6 and one V8 available. For 1993 to 1995, the V6 was the 3.4 L (208 cu in) 60° ; 1996–2002 cars received the 3.8L (231 cu in) 3800 Series II V6. 1993–1997 V8 cars shipped with the 5.7L (350 cu ...
From 1967-1969, the Super Turbine 300 was also available on the sporty Pontiac Firebird with the overhead cam inline six (230 and 250 cubic inches) or small V8 engines (326 and 350 cubic inches). Some of the rare later ST300's had a bell housing that was cast like a "multi-case", but some were never drilled from the factory for the Chevrolet ...
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.