Gen II LT1 5.7-liter V8Following the same basic design and dimensions as the previous generation SBC 350, the Gen II LT1 5.7-liter V8 also displaced 350 cubic inches. It debuted in the 1992 Chevrolet Corvette, capable of reaching a top speed of 176 mph and covering a quarter mile in 12.8 seconds at 111 mph.The Gen II LT1 powered various GM cars and trucks until 1997. LT1 engines destined for use in Corvettes and Camaros received aluminum cylinder heads on cast iron blocks, while all other applications featured full cast iron construction.While Chevrolet used the LT-1 moniker with a version of its Gen I small block, the Gen II LT1 features some refinements over its predecessor. The naming similarity is a little confusing, but the hyphen in the early LT-1 name differentiates it from the newer LT1.The 5.7-liter LT1 featured a 10.4:1 compression ratio, with a rated output of 300 horsepower and 330 lb-ft of torque. Te new reverse-flow cooling system sent engine coolant from the radiator to the cylinder heads before flowing through the rest of the engine, allowing a higher compression ratio over the Gen I SBC's 9.5:1. Cooler cylinder temperatures allowed fuel to burn evenly at higher compression without damaging detonation or spark knock.
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