1968 Chevy Biscayne with the 425hp, 427ci L72 big-block under the hood

Big-block Chevy Biscaynes of the late 1960s were the ultimate “sleeper” cars of their era. These stripper cars, devoid of any real options, sporting dog dish hubcaps, and looking exactly as an entry level car should, would roll up to their prey on skinny tires and bench seats. Introduced in 1966 as an RPO option, the L72 engine option sported solid lifters and camshaft, 11:1 compression, 4-bolt main caps, massive, high-flowing rectangular port heads and an advertised 425 hp. (The first 1966 ads for this engine touted 450 hp, but…

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