I was at a seminar in the 80's put on by a Ford dealer and that's where they said most Ford tractor engines don't use sleeves and it's cheaper to rebuild than a sleeved engine. What engines are you talking about?
9N, 2N, 8N, NAA to name a few.
Maybe in the 800's they did not have sleeves.
Ford 671 Sleeve and Piston Kit, 134 Gas, STD (PK14G1)