The base engine was the 135-horsepower 3.9-liter inline-6 'Blue-Flame' engine with hydraulic valve lifters. The 4.6-liter V-8 engine produced 170 or 230 horsepower with a two- or four-barrel carburetor. Ultimately, the 5.7-liter V-8 produced 250–330 horsepower depending on carburetion and compression ratio.
A 57-year-old entry-level Impala with the inline-6 'Blue-Flame' engine cost $3,445. $28,500 today. A V-8 would cost $4,000 or $33,000 today.
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