The first Chevrolet V8 engine to succeed commercially was the 1955 small block. But it wasn't Chevy's first V8. That came three decades earlier.
Chevy's Original V8 Story Starts In 1917, Not The 1950s
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The first Chevrolet V8 engine to succeed commercially was the 1955 small block. But it wasn't Chevy's first V8. That came three decades earlier.
Source: Jalopnik