Think by the time that block was cast that IH had decided they were not going to have parts inventory stocked for ready to install engines for those tractors. There was to many different combinations of sleeve and piston sets and a different connecting rod piston pin size. Piston and sleeve set desired was ordered for the block and other serviceable parts from damaged block were used in the engine. Have found the engines with most original SM parts and found with some replacement parts. If engine needed a new camshaft from IH parts from middle 57 on the later camshaft was being sold as a standard replacement part for a M through 450. Doesn't mean some dealers didn't still have a new previous type camshaft on a shelf before supply was used up.
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Today's Featured Article - Talk of the Town: How to Remove a Broken Bolt - by Staff. Another neat discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "I have an aluminum steering gear housing with a bolt broken off in it. The bolt is about a 3/8" x 1 1/2" bolt. I've already drilled the center of the bolt out with about 7/64" drill bit the entire length of the bolt. Only one end of the bolt is visible. I tried to use an easy out but it wasn't budging and I didn't want t
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