I would like to say I just knew the answer but it is from the internet: (vettefacts.com)
Engine Specifications
Base: 283ci, 230 BHP, Carter four-barrel Type WCFB Model 2816 -- 5487 Made
Optional (469): 283ci, 245 BHP, 2x4 BBL -- 1417 Made
Optional (469c): 283ci, 270 BHP, 2x4 BBL, High Lift Cam -- 1846 Made
Optional (579): 283ci, 250 BHP, Rochester Fuel Injection -- 175 Made
Optional (579d): 283ci, 290 BHP, Rochester Fuel Injection (10.5:1 Compression w/ High Lift Cam) -- 745 Made
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