Original, 1985 Ford Medium and Heavy Duty Truck Service Specifications handbook contains information normally not found in the service manuals or owner's manuals.  Information primarily consist of measurements, sizes, dimensions, quantities, etc. with relationship to brakes, suspension, transmission, engine, ignition system, fuel system, lighting system, etc. Models include F-, B-, C-600 through 8000 Series (except L-Series and CL-9000).