Introduced in 1966, Chevrolet’s L72 427 V-8 emerged as a formidable powerhouse. Officially rated at 425 horsepower, its remarkable features, including 11.0:1 compression, solid-lifter cam, forged crank, high-flowing rectangular-port cylinder heads, and an exceptionally durable block, contributed to an actual output closer to 450 horsepower. This engine stands out as one of the most powerful powerplants employed by an American automaker during the 1960s.
This 1966 Corvette is an early-production model that rolled off the assembly line in October 1965 during the first months of 427/450 production, before Chevrolet’s decision to officially reduce the power rating from 450 to 425 horsepower. The adjustment in power ratings was a result of insurance considerations, resulting in the majority of the 1966 production run featuring 425 horsepower engines.
Source: RM Sotheby’s
