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The LS1 was an evolution of the earlier LT small-block V8 but shares little other than similar displacement and external dimensions. It is an all-aluminum 5.7 L (5665 cc) pushrod engine and produces between 305 and 350 hp (228 to 261 kW) and 375 ft·lbf (508 N·m) of torque, depending on the application. Beginning in 2001, the LS1 received the higher-flowing intake from the LS6, and a smaller camshaft to keep power at the same level; this also allowed GM to remove the EGR system. The block is very similar to that of the higher-output LS6; beginning in 2002, some LS1 engines were actually built using the LS6 block instead. The LS1 was on the Ward's 10 Best Engines list for 1998. Applications: * 1997-2004 C5 Corvette base model * 1998-2002 Chevrolet Camaro Z28, SS * 1998-2002 Pontiac Firebird Formula and Trans-Am * 2004 Pontiac GTO * 1999-2005 Holden Commodore as an option * 1999-2005 Holden Statesman/Caprice * 2001-2005 Holden Monaro
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