alsfarms Posted November 8, 2023 Share Posted November 8, 2023 This question is for the Chevrolet experts among us. I have two early 283 blocks and would like to know the applications for them. 1- casting # 3720991 Stamped number F 56 FB 2- casting # 3731548 Stamped number F 1106 CD casting date code K56 Help me determine what the engine application and other relevant information is. Thanks, Al Link to comment Share on other sites More sharing options...
hursst Posted January 18 Share Posted January 18 I don't know the answer to your questions, but this book would tell you everything: Chevrolet By The Numbers 1955 1956 1957 1958 1959 Impala Corvette Bel Air Book | eBay Link to comment Share on other sites More sharing options...
bwbugay Posted January 20 Share Posted January 20 they are both 265 Motors first one is 1956 the second one is early 1957 . 1 Link to comment Share on other sites More sharing options...
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