Ford 240 and 300 6s were designed for long commercial use instead of light car and some commercial use like earlier engines with the 4 bearing crankshafts. Ford had a "light" 6 family about the same time- the 144,170,200 and last 250 inchers. These kept the 4 bearing crank design and would fit into smaller bodied cars. The 170 inch low compression was used in the first mid 60"s Econolines (midship engine)as a space saving measure- but that was not at the time thought to be "heavy" commercial service. The 240 was the cab and commercial van (E-100) engine. 7 main bearing crank, gear drive cam, larger oil pump, extra iron in block and heads for strength compared to "thin wall casting" block, short chain drive cam, 4 bearing crankshaft of light 6. Crank and rod bearing sets available in service bearing +2-5 thousands wear for extending life of lower end without maching crank journals. RN
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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