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LS2 can also refer to the 1973–1974 Super Duty 455 cu in (7.5 L) Pontiac V8 engine LS2 can also refer to the 1985 Oldsmobile Diesel V6 engine. The LS2 was introduced as the Corvette's new base engine for the 2005 model year. It also appeared as the standard powerplant for the 2005–2006 GTO.
The 1982 L83 was again the only Corvette engine, producing 200 hp (149 kW) and 285 lb⋅ft (386 N⋅m) of torque from 9.0:1 compression. Since GM did not assign a 1983 model year to production Corvettes, there was no L83 for 1983. [22] This was also the only engine on the 1984 Corvette, at 205 hp (153 kW) and 290 lb⋅ft (393 N⋅m) of torque.
MAFless tuned LS engine equipped vehicles never eventuated in the United States as the C5 Corvette with the same engine was always fitted with a MAF sensor. It featured a larger MAF sensor body than the ones installed in the Australian cars, to avoid any intake restriction issues and still deliver accurate injection at all times.
Other problems may be implicated in the case of older vehicles equipped with carburetors. Weak, disconnected, or mis-connected throttle return springs, worn shot-pump barrels, chafed cable housings, and cables which jump their tracks in the throttle-body crank can all cause similar acceleration problems.
In 1991, the Oldsmobile 307 was replaced with a 305 cu in (5.0 L) throttle body fuel-injected small-block Chevrolet L03 V8, which was also found in Chevrolet's Caprice, C/K light trucks, and G-series vans. In 1993, the 180 hp (134 kW) 350 cu in (5.7 L) L05 V8 became standard in the newly-renamed Cadillac Fleetwood.
Active Fuel Management (formerly known as displacement on demand (DoD)) is a trademarked name for the automobile variable displacement technology from General Motors.It allows a V6 or V8 engine to "turn off" half of the cylinders under light-load conditions to improve fuel economy.
The advent of concern about fuel economy and emissions had major impacts on engine design. Some of the trade-offs reduced throttle response. Most new cars employ a drive-by-wire system, which includes electronic throttle control and can itself either reduce or increase throttle response (Depending on whether or not it's being employed on a performance car).
General Motors has produced two different engines called LT4: . 1996–1997 LT4 – GM Generation II Small-Block; 2015-(current) LT4 - GM Generation V Small-Block – Used in the Z06 Corvette & Cadillac CTS-V & Camaro ZL1 for years 2017 It was used in the first Car.