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Intended as a low compression progression from the previous years Ram Air IV engine, all 1971 455 HO engines used a heavy duty 4 bolt main block, round port cylinder heads (casting #197; with 8.4: compression), "Ram Air" style exhaust manifolds, and a two-part aluminum intake manifold. The 1971 Pontiac 455 HO was Pontiac's first engine to ...
In 1981 it underwent some changes and offered a conservatively rated 200 hp (149 kW) and 340 lb⋅ft (461 N⋅m) of torque. [1] The Turbo Trans Am was first added to the Pontiac model lineup in 1979 as a 1980 model year, and was the first production Pontiac V8 engine to use forced induction; in this case through an exhaust-driven turbocharging ...
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.
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 ]
Also called the GM small corporate pattern and the S10 pattern. This pattern has a distinctive odd-sided hexagonal shape. Rear wheel drive applications have the starter mounted on the right side of the block (when viewed from the flywheel) and on the opposite side of the block compared to front wheel drive installations.
1981 became the final year for the second generation Pontiac Firebird. The three engine options were unchanged for the model line-up, however, the option for a four-speed Borg Warner Super T-10 was re-introduced for the Formula and Trans Am, but was only available with the Chevrolet sourced LG4 305 5.0 liter V8.
The lower pressure tail of an exhaust pulse then serves to create a greater pressure difference between the high pressure head of the next exhaust pulse, thus increasing the velocity of that exhaust pulse. In V6 and V8 engines where there is more than one exhaust bank, "Y-pipes" and "X-pipes" work on the same principle of using the low pressure ...
The enlarged 1956 Pontiac V8 found its way into light-duty GMC pickup trucks. Pontiac's second-generation V8 engines shared numerous similarities, allowing many parts to interchange from its advent in 1959 to its discontinuation in 1979. Displacement ranged from 287 to 455 cu in (4.7 to 7.5 L).
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