Four, six, and eight-cylinder engines are used in Chevy II and Nova models. The four-cylinder engine is an inline, overhead valve design having five main bearings and displacing 153 cu in. The 194, 230, and 250 cu in. six-cylinder engines are also inline, overhead valve units, but they have seven main bearings. The V8 engines are of two types: "small block" or "large block." The "small block" series of V8 engines includes the 262, 283, 305, 307, 327, and 350 cu in. engines. They are similar in design and have some interchangeability of parts. The "large block" V8 series applies here to the 396 cu in. engine.