The story
From the smaller size of the engine block compared to a big block engine.
Etymology from Wiktionary, CC BY-SA 4.0.
small block
Today it means: having or characterised by a relatively small and lighter engine block Full definition →
Today it means: having or characterised by a relatively small and lighter engine block Full definition →
From the smaller size of the engine block compared to a big block engine.
Etymology from Wiktionary, CC BY-SA 4.0.