The C4 three-speed automatic is the most common transmission used in vintage Mustangs. Known as the Cruise-O-Matic from '64-1/2-'66 and Select-Shift from '67-'82, this simple hydraulic slush box, of ...
I have a '67 fastback with a C4 transmission from a '71 Mustang. I also have a Traction-Lok rear with 3.50 gears. The problem is the speedometer. All of my research indicates the way to calibrate the ...
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