It is "possible" to remove the sleeves and hone the block to accept C-301 pistons. Long term they don't seem to work out near as well as having the block bored and using C-291 pistons and sleeves. The 263 turned 301 engines I have torn down never seemed to have a very good looking cylinder wall.
The cylinder head is an area that needs a lot of attention during a rebuild. If you are increasing the displacement and/or increasing the engine speed using the stellite faced exhaust valves is a must. Of course valve guides and seats must be in good condition and I had the best results using teflon valve stem seals.
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Today's Featured Article - Haying Before Tractors - by Owen Clark. Hi guys! At age 8 (1927, am now 79) I was learning how to drive a stacker team on the old homemade A-frame wooden stacker, on three of my uncles` dairy farms in Star Valley Wyoming (south of Jackson Hole, on the Wyoming-Idaho border). There was one steam tractor in the Valley, owned by an entrepeneur who used it to run his grain threshing machine, that he hauled from farm to farm for the fall harvest. We used teams of horses not only on the stacker, but on the buckrake to buck the dried
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