Haggerty (thanks SKIP for sending the post) claims otherwise….
Oct. 26, 1954
Small Block Chevy Introduced: The future of Chevrolet and of high-performance American Cars is secured with the advent of the light and powerful 265 Chevrolet.
Interestingly, the small-block Chevy was not the first V-8 in the brand's history. From 1917-19, some 3000 cars were equipped with the little-known Chevy Series D V-8. The 288-cubic-inch (4.7-liter) V-8 had a 4.75:1 compression ratio and produced 55 horsepower at 2700 rpm. The Series D was the first overhead valve V-8 and featured an exposed valvetrain, nickel-plated valve covers, and an aluminum water-cooled intake manifold.
Interestingly, the small-block Chevy was not the first V-8 in the brand's history. From 1917-19, some 3000 cars were equipped with the little-known Chevy Series D V-8. The 288-cubic-inch (4.7-liter) V-8 had a 4.75:1 compression ratio and produced 55 horsepower at 2700 rpm. The Series D was the first overhead valve V-8 and featured an exposed valvetrain, nickel-plated valve covers, and an aluminum water-cooled intake manifold.
Before tonite I had never heard of those motors before.
Interestingly, the small-block Chevy was not the first V-8 in the brand's history. From 1917-19, some 3000 cars were equipped with the little-known Chevy Series D V-8. The 288-cubic-inch (4.7-liter) V-8 had a 4.75:1 compression ratio and produced 55 horsepower at 2700 rpm. The Series D was the first overhead valve V-8 and featured an exposed valvetrain, nickel-plated valve covers, and an aluminum water-cooled intake manifold.
Very few of these exist today. An example is in the National Automobile Museum in Reno.