Hi Arthur. To paraphase Bill Lumbergh, "I'm going to have to disagree with you there." The Ford GAA was a very advanced and very good engine. What's not to like about an 1100 cubic inch aluminum V8 with shaft driven double overhead cams and four valves per cylinder? It made the Shermans faster than anything the Germans had. The Continental radials and duel GMC diesels were also very good. The only engine that seemed 'ify' was the Chrysler multibank, but from what I've read they were very reliable as well, albeit super complicated So we had many decent engines to choose from.