An example of this variation is when the Boss 429 motors for 1969 switched from 1/2" to 3/8" rod bolts, the tag changed from 820-S to 820-T.īeginning in 1970, to resolve what had been a problem with cars that had engines that would require air conditioning compressors to be mounted to them at the engine assembly plant, the letter "G" was added after the suffix code. Sometimes the next letter (B, K, T) would be used later in the model run, and, in '64 and '73, the letter "C" is even seen. At the beginning of a model run, the first letter in the cycle (A, J, S) would be used. These suffixes would be used internally for tracking of engine manufacturing changes.
Ford engine codes location code#
Leaving "I" and "O" out of the alphabetic code (to avoid confusion with the numbers 1 and 0), leaves 24 letters, which divided amongst the three years gives "A" through "H" for the first year of the cycle ('64, '67, '70, '73), "J" through "R" for the second year ('65, '68, '71), and "S" through "Z" for the third year ('66, '69, '72). "The suffix for the engine plant code is based on a three-year cycle. According to "The Mustang and Cougar Tagbook" by Kevin Marti: The Model Design digit is often the most misunderstood piece of information found on Ford casting numbers. Basic Design Digit 'A' is a generic code. The 1975 MPC says that "prefixes and suffixes are for Ford Motor Company use only and do not affect engine identification". Take this example, C8AE-9425-F is a 1968 390 intake design for the Galaxie but the intake was also used with on all models and car lines with the 390 engine. One challenge to hobbyists has been in figuring out what the different suffixes mean. The engine plant code contains three digits and an alphabetic suffix. Other information you can know is the power, BHPs, year, Aspiration, cylinder valves and RPM of your Ford Fiesta engine. It is always good to know the engine code as it can also help ordering other engine parts and ancillaries like cylinder head, gearbox etc. It can help you order the right engine for your Fiesta. The engine plant code on the tag should match the engine tag number found on the build sheet. Here is a complete list of Ford Fiesta engine codes. The tag included information to identify the engine displacement in cubic inches, the two-digit model year, the engine change level, the year and month of production, and an identifying engine plant code. The bolt that secured the coil bracket also secured the tag. The 428 CJ and SCJ, for example, were originally identified by a small steel tag that was mounted to the top of the engine under the ignition coil mounting bracket. Have you ever wondered what kind of engine you're looking at when opening the hood of a Ford? Well, Ford took some steps to make sure their service employees didn't have to guess when working on a car.
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