For a race or hot rod engine, the Cadillac flathead seems like a better starting point than the Ford flathead. Heads and intakes were available for the Cadillac, but for some reason there seems to have been very few Cadillac powered cars. Did the Cadillac have some fatal flaw I am not aware of? Did the engine have an inherent power limitation? Was the Cadillac's size or weight a problem? The Ford flathead was cheaper and more plentiful than the Cadillac flathead, maybe that's the reason? Why wasn't there more Cadillac powered vintage race cars and hot rods?