263 , you can look at the left side of the block up by the head and it should say as the engine s/n and CID is stamped there unless it has a replacement engine in it then it is hard to tell with out pulling the head . It also could be a 263 to 291 conversion . I have done some that way over the years and i get one that has a C D class bore because unless you get the big buck sleeve kits from Case I H everything is geared to the A B class bores and ya end up with sleeves that are to small and they will snap off the lip and get sucked down around the crank . So i get the 263to 291 conversion and bore the block to one size and make it a 291 .
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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