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The extra horsepower was claimed to come from the intake ram-air effect available in the SS and WS6 models. In Australia, continuous modifications were made to the LS1 engine throughout its lifetime, reaching 382 hp/376 ft-lb in the HSV's VYII series, and a Callaway modified version named "C4B" was fitted to HSV GTS models producing 400 bhp ...
Firebird performance levels improved for 1996, with the establishment of the stronger 200-hp 3.8 L V6 as the new base engine, and the power rating of the LT1 increased to 285 for 1996, due to its new dual catalytic-converter exhaust system. 1996 was also the first model year of the OBD-II computer system. Optional performance enhancements were ...
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.
In 1964, horsepower increased to 366 hp (273 kW) for the newly named L-76 version, and 375 hp (280 kW) for the fuel injected L-84, making the L-84 the most powerful naturally aspirated, single-cam, production small-block V8 until the appearance of the 385 hp (287 kW), 395 lb⋅ft (536 N⋅m) Generation III LS6 in 2001. This block is one of ...
By 1994, it had been developed into the M11, and in 1998, Cummins ceased production of the old L-series engine. After the original L10 evolved into the M11 engine, the new ISL9 engine was introduced to operate in this market segment, yet with a better power-to-weight ratio , by enlarging the piston stroke of the older C8.3 engine.
For 1998, the engine was revised for emissions regulations and became known as the 2200. This revision lowered power to 115 hp (86 kW) at 5000 rpm, and torque to 135 lb⋅ft (183 N⋅m) at 3600 rpm. The engine was discontinued in 2003, replaced by the 2.2-liter DOHC Ecotec engine. Although it displaces 134 cu. in, the 2.2-liter OHV is still ...
The Pontiac Sunbird (also known as the Pontiac J2000 and Pontiac 2000) is a model line that was manufactured and marketed by Pontiac from the 1976 to the 1994 model years. . Loosely deriving its name from the Pontiac Firebird, the Sunbird was introduced as the eventual replacement for the Pontiac Astre, replacing it entirely in 1978 as the smallest Pontiac (the later T1000 was slotted below it ...
Car and Driver magazine named the Trans Am with the WS6 performance package the best handling car of 1979. During period dyno testing, the National Hot Rod Association rated the limited-availability T/A 6.6 high-output Pontiac 400 engine at 260–280 net horsepower, which was significantly higher than Pontiac's conservative rating of 220 hp.