| 33,155 miles. Unrestored. 1 of 188 LS6 Corvettes produced for 1971, estimated 50 were convertibles. Matching numbers. Original LS6 454/425 HP V-8 engine. Aluminum heads. Transistorized ignition. A.I.R. emissions equipment. M22 4-speed manual transmission. Sunflower Yellow with White soft top. Black vinyl auxiliary hardtop. The LS6 454/425 HP engine was a one-year-only option. The 1971 LS6-powered Corvette's high-compression engine marked the peak of the muscle-car era. The Chevy last-of-kind powerplant would be not be seen again as emission regulations took its grip. High-compression engines required leaded fuel and that was banned. |  |
 | With a compression ratio of 11.25:1, the LS6 (in it's peak form) redlined at 6500 RPMs to produce 450 hp and 500 lb-ft of torque. A forged steel crankshaft with forged aluminum connecting rods was used to maximize the output of this high revving engine. To control emissions, engineers installed an air injection reactor pump to increase air into the exhaust system. That was usually the first thing to be removed by owners. |
 | The LS6 added a huge $1,221 to the Corvette’s $5,500 base price. The reworked LS6 for the 1971 Corvette had a 9.0:1 compression ratio and produced 425 horsepower @5600 RPM and 475 lb-ft of torque @ 4000 RPM. The Corvette could still hit 0-60 mph in 5.3 seconds, just a fraction slower than the original. Inside, the cockpit-style interior embraced the classic two-seat format. Available creature comforts included an AM/FM radio as well as power steering and power brakes. The car made $178k at Mecum Indy. |
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