Tim- The engine in the picture is a postwar Chrysler 6 cylinder L head engine. It could be for a Dodge, Desoto, Plymouth or small Chrysler. All the blocks on these cars were pretty near identical with the only difference being slight changes in bore and stroke. By the looks of the carburetor it is probably a very recent ( 1950's ) Chrysler product. If you can get a hold of a "Hollander" interchange manual you should be able to quickly identify make, model, and year, as there is a lot of published information on postwar car parts. Good luck! Bill (I can send a picture if that helps)