Unlike other V8's of the day (Cadillac, LaSalle, Lincoln), in which the engine block and crankcase were bolted together, Ford designed a one-piece casting with bolt-on exhaust manifolds. Additionally, cylinder heads need only be a simple casting with threaded holes for the spark plugs. With valves positioned in the engine block beside the piston (instead of in the cylinder head, as in an OHV engine), push-rods and rocker arms were not needed. In December of 1931, in the midst of America's Great Depression, Ford Motor Company stopped production of their four-cylinder engine and began manufacturing a new flathead V8.Īdvantages of a flathead (side-valve) engine over an overhead valve engine were cost of manufacture and simplicity.
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