1985 Cadillac Fleetwood Engine: 4.3L V6; Bore: 2.50 In.; Position: Front;. 1985 Cadillac Fleetwood Submodel: 75 Formal; Engine: 4.1L V8; Bore: 2.50 In.; Position: Front;. 1985 Cadillac Fleetwood Submodel: 75; Engine: 4.1L V8; Bore: 2.50 In.; Position: Front;.