Did the 57 Chevy ever come with a 427?

NO! The 427 Chevy engine was not sold by GM until 1963. The 427 is a big block engine and the very first big block was the 348 introduced in 1958. The 409 was introduced in 1961. The 427 in limited production only in 1963. The 427 was later released again in 1966 as a production engine. The largest engine every offered in the 1957 Chevy was the 283 V8. You could order this engine with mechanical fuel injection in 1957.
NO! The 427 Chevy engine was not sold by GM until 1963. The 427 is a big block engine and the very first big block was the 348 introduced in 1958. The 409 was introduced in 1961. The 427 in limited production only in 1963. The 427 was later released again in 1966 as a production engine. The largest engine every offered in the 1957 Chevy was the 283 V8. You could order this engine with mechanical fuel injection in 1957.