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How much horsepower does 1957 Chevy 283 small block have?

1957 Chevy 283 small block engines came with various horsepower ratings depending on the specific model and options. Here are a few examples:

- 185 horsepower: This was the standard rating for the 283 small block in the 1957 Chevy Bel Air, Biscayne, and Delray.

- 220 horsepower: This rating was available with the optional "Power Pack" which included a four-barrel carburetor, higher compression ratio, and dual exhaust.

- 245 horsepower: This was the highest horsepower rating available for the 1957 Chevy 283 small block. It was offered with the "Super Power Pack" which included all the features of the "Power Pack" plus a more aggressive camshaft and higher compression ratio.

Please note that these horsepower ratings are gross ratings measured at the engine without accessories or exhaust. Actual net horsepower available to the rear wheels would be lower.