Re: 1966 Mustang Convertable, 289 Ponie Series with Factory Air
It's in your VIN. Check your title or registration or on the data tag
riveted to the driver's door. (The problem with the data tag is that
doors get dented and replaced.) It's also on the inner fenders, but
Anyway, it's 11 digits. The first digit will be a 6, indicating 1966
model year. The second will be one of three letters, indicating the
assembly plant. (F = Dearborn, R = San Jose, T = Metuchen N.J.) The
third and fourth are numbers indicating body style, which for a
convertible will be 08.
The 5th digit is the engine code. K = 289 ci 271 hp 4-bbl solid cam.
A = 289 ci 225 hp 4-bbl, hydraulic cam. C = 289 ci 200 hp 2-bbl. T =
six cylinder. It's this engine code that makes a '66 V8 a "K code," an
"A code," or a "C code."
The last six digits are the car's serial number. Each plant had its
own sequence, starting with 100001.