221/260/289/302. Block identification is straightforward with 221, 260, 289, and 302 cubic-inch Fords. The 221 and 260 are both five-bolt bellhousing blocks with either a 3.500- inch bore for the 221 or 3.800-inch for the 260. Casting numbers and date codes are C2OE and C3OE, located just above the starter.. "/>
1956. ♢ 77271 ♢to♢ 116397 ♢. 1957. ♢ 116368 ♢and♢ Higher ♢. Starting with the Hundred series in 1954, Ford began using a model number prefix to indicate options such as engine size and transmission type. If you have your model and serial numbers written down, GoTo Decode Table..
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