Tech Briefs
January 2005
Small Block goes big
The new 2005 Chevrolet C6 Corvette features the most powerful standard engine in Corvette history. The 6.0-L LS2 V8, part of the fourth generation of General Motors' Small Block engines, delivers 400 hp (298 kW) at 6000 rpm and 400 lb·ft (542 N·m) at 4400 rpm—increases of 50 hp (37 kW) and 40 lb·ft (54 N·m) over the previous Corvette's5.7-L LS1. (The first Small Block in 1955 displaced 265 in3 [4.3 L] and put out 195 gross hp.) The 0.3-L increase in displacement is the result of an increase in cylinder bore diameter to 101.6 mm (4.00 in); stroke is 92 mm (3.62 in). Compression ratio is raised from 10.1:1 to 10.9:1 and maximum engine speed is bumped from 6200 to 6500 rpm.
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