The Chevrolet Series D V8 is an American, liquid-cooled, 288 cu in (4.7 L) capacity, V8 piston automobile internal combustion engine, designed and built by Chevrolet Motor Car Company in 1917 and General Motors Company's new Chevrolet Division (acquired as part of Chevrolet's 1917 takeover of, and merger into, GM) in 1917 and 1918. It is capable of producing 36 horsepower (26.8 kW) @2700 RPM. This was Chevy's first V8 and the first overhead-valve V8. Chevrolet wouldn't make another V8 until the debut of the famous small-block in 1955.
This design had an exposed valve train (you could see the pushrods and lifters from the top) with nickel-plated valve covers, an aluminum water-cooled intake manifold; the starter is in the valley, as is the gear driven generator with the fan clutch coming off of it. The gear driven generator runs the distributor as well. The belt in the front only drove the water pump. It had a 50 lb. flywheel and a counter balanced crankshaft.