The dual-quad 283 was available in either a 245hp (hydraulic cam) or a 270hp (mechanical cam) version. The batwing air cleaner used dual air filter elements for the pair of Carter carbs. Igniting all of that air and fuel is a factory original GM dual-point distributor. Feeding the thirsty Carters is an AC high-volume mechanical fuel pump. The 283 with its short stroke was a fast revving engine for its day and, if tuned properly, could make lots of high-rpm power on the street or at the track.