- Jun 3, 2001
the only one piece block and head construction engine that I have ever heard of was the Offenhauser race engines.
After Harry Miller went broke & his head machinist Fred Offenhause took over, in some sense in order to get his back pay; in the depths of the depression, he (Fred) built his follow-on business back up starting with Harry's cheapest, simple 4 cylinder boat motor design, to become the might Offenhauser race engine. But before that, all the Millers had integral block & head, and barrel crankcases. More than a few other early race engines were built that way, including the Euro engines that influenced Harry.