The 19 1/2 289 engines have the same 5-bolt pattern. The main difference between a 260 and a 289 is the 260 has a 6 inch space between the motor mount bolt holes, while the 289 has a 7 inch space.Īll 260 engines have a 5-bolt bell housing bolt pattern. This engine was the predecessor to the 289. The date codes of the castings may give you a better idea, as the components need to be manufactured before the cars production.įrom 1962 to 1964 1/2, Ford used the 260 V8 engine. Which is right for a 1964 ½ “C4 or C5”, that is where one of many arguments begins. The year of the engine is designated by casting number with the first letter “C” designating the sixties followed by a number. The 5th digit in the cars VIN designates the engine size, and a “F” in this place would indicate the engine should be a 2-barrell 260-cubic inch V8. To the best of my knowledge, Ford did not use engine serial numbers in the mid sixties. The differences between 1964 ½ Mustangs and 1965 Mustangs is exactly the stuff perpetual arguments are made of. Where is the serial number located and can you tell the block is a 260 64 1/2 by the serial number? A. I have a 1965 Ford Mustang and I can not find the location of the engine block serial number. I have a classic car question that pertains to the engine size and year manufactured.
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