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An LS swap is a type of engine swap using any form factor of General Motors's LS V8 engine series. [1] [2] Motor Trend noted in 2020 that "the Chevy LS V-8 engine has become the de facto engine swap suggestion for anyone seeking to add power to their existing platform" due to the engine's relatively compact size and light weight. [3]
The "LS" nomenclature originally came from the Regular Production Option (RPO) code LS1, assigned to the first engine in the Gen III engine series. The LS nickname has since been used to refer generally to all Gen III and IV engines, [14] but that practice can be misleading, since not all engine RPO codes in those generations begin with LS. [15]
Introduced as a performance engine in 1967, the 350 went on to be employed in both high- and low-output variants across the entire Chevrolet product line. Although all of Chevrolet's siblings of the period ( Buick , Cadillac , Oldsmobile , Pontiac , and Holden ) designed their own V8s, it was the Chevrolet 305 and 350 cu in (5.0 and 5.7 L ...
Typically, an engine swap is performed for performance, swapping-in a more powerful engine; however, an engine swap may also be performed for maintenance, where older engines may have a shortage of spare parts, and so a modern replacement may be more easily and cheaply maintained.
The LS-7 was later offered as a crate engine from Chevrolet Performance with an officially rated power minimum of 500 hp (373 kW) gross. In 1971, the LS-5 produced 365 hp (272 kW) and 550 lb⋅ft (746 N⋅m), and the LS-6 option came in at 425 hp (317 kW) and 575 lb⋅ft (780 N⋅m).
The process of evolving the engine was gradual and continuous; by 2006 almost all the 1959-specification engine components had been upgraded, so that the 2020 twin-turbo 6.75-litre engine produced over 150% more motive power and torque than at the beginning of its life, had 40% better fuel economy, and produced 99.5% less exhaust emission. [3]
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