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 - Show Coverage: Journey to Ankeny - by Cindy Ladage. We left Illinois on the first day of July and headed north and west for Ankeny, Iowa. Minus two kids, we traveled light with only the youngest in tow. As long as a pool was at the end of our destination she was easy to please unlike the other two who have a multitude of requirements to travel with mom and dad. Amana Colonies served as a respite where we ate a family style lunch that sustained us with more food than could reasonably fit into our ample physiques. The show at Ankeny
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