Camshaft for 4 cyl gas or diesel engine Ford tractor models: 5000, (1965 to 1975); 5600, 5700, 6600, 6700, 7600, 7700, (1975 to 1981); 5610, 5900, 6610, 6710, 7710, (1981 to 1991); Industrial models 650, 6500, 750, 755, 755A, 7500, (1972 to 7/1987); 755B (8/1987 & up); 655, 655A, (6/1985 to 10/1988).