Lots of thermostats are junk these days and a lot of them are cases of wrong thermostats are being sold as replacements for engines that they are not designed for. A good example is the Ford 351C/351M/400 engines. The original thermostats had a hat on the bottom of the thermostat which covered up the bypass which is cast into the intake. All your parts stores call for the same thermostat as the 289/351Windsor/429/460 engines. Those thermostats do fit but because they do not block off the bypass when the thermostat opens the engines run hot. I have a 1978 F150 with a 400. My solution was to buy a whole box of NOS Robertshaw thermostats. They were made in Knoxville TN and are properly designed.
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Today's Featured Article - A 1937 John Deere Unstuck - by Gary Hickman. Here is my story of how I got the pistons out of a 1937 JD B that the engine had been stuck for about 14 years: About 12 years ago my Dad gave me one of the tractors I ran as I was growing up on our farm in central Nebraska. The engine on this tractor, a 1937 John Deere "B", had been stuck for 2 years before he gave it to me. This last spring (1999) I hauled the tractor to our 2 acre lot in St. Libory Nebraska where it joined my antique machinery collection, at that time a 1929 Caterpillar T
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