Chevrolet Chevelle SS 454 LS6 – $1.2 Million
The Chevrolet Chevelle was a popular muscle car with its combination of an affordable price, nice design and powerful engines. So, for 1970, Chevrolet offered an expanded line of engines including the famous 454 V8 big block. They called the regular version the LS5 and it was powerful.
But there was an even stronger LS6 variant, which they installed in just 3,700 cars. The LS-6 had an almost racing compression of 11.25:1. Also, it used a bigger carburetor and much stronger engine internals. Although they rated it at 450 HP, it is more likely that it produced over 500.