When tenaco purchased IH , they already owned case as it had gone under years before. In the merger the equipment for mfg the power train of the IH 50 series tractor was moved to Racine. Then engineers from both sides of the isle built the magnum,(power shift was already in the works I understand). You will see ideas from both sides of the merger in that tractor. As far as the so called cummins engine, in 1980 or so, Case and Cummins entered into a joint 50-50 venture and developed the Consolidated Diesel Corp, and designed the new engines. It is totally different from the traditional cummins engine and the previous case engines. Cummins always used a PT fuel system which utilized unitized injectors run off the camshaft, and the new CDC engines is traditional inline unit injection pump. Both Case and Cummins engines rolled off the same assembly line with minor changes depending on which way the engine was going. The smaller CDC engine was being used in one of the case tractors at the time of the merger, never could get them case model numbers straight. After that many changes have taken place, the engine used in a Dodge for instance started out as that engine, as you will notice the six seperate valve covers. At any rate, when people say cummins, I think is appropriate to point out that there is actually two totally seperate styles of engines out there referred to as cummins when one is actually a CDC engine. I know the last years have changed the picture again and I don't keep track of them anymore but that is how it came about at the time Tenaco purchased IH.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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