In Aust, a Flathead is a fish and a Sidevalve is an engine. Sidevalve V8's are invariably Ford (No-one has a Caddilac!), but Ford also made 4s in Anglia's and other English stuff and Dodge 6's are Sidevalves, too. Even small stuff like Briggs and Strattons are sidevalves. Flatheads will only be found in rivers or US catalogs.
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