65 C10 Brakes Question

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You might add what style of brakes you are running - like have you converted anything to disc brakes or are you still running a full drum setup. You might also want to provide the specifics on the master cylinder you purchased. They have different bore diameters for different applications and will include a proportioning valve for disc applications even if only the fronts have been converted to disc brakes and especially if it has been converted to discs all around. Additionally, powered versus manual brakes like different leverage ratios from the pedal (i.e., 6:1 to 7:1 for front drums and 4:1 to 5:1 for front disc brakes).